mirror of https://github.com/tLDP/LDP
new
This commit is contained in:
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#!/bin/bash
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# bashpodder.sh:
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# By Linc 10/1/2004
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# Find the latest script at http://linc.homeunix.org:8080/scripts/bashpodder
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# Last revision 12/14/2004 - Many Contributors!
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# If you use this and have made improvements or have comments
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# drop me an email at linc dot fessenden at gmail dot com
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# I'd appreciate it!
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# ==> ABS Guide extra comments.
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# ==> Author of this script has kindly granted permission
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# ==>+ for inclusion in ABS Guide.
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# ==> ################################################################
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#
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# ==> What is "podcasting"?
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# ==> It's broadcasting "radio shows" over the Internet.
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# ==> These shows can be played on iPods and other music file players.
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# ==> This script makes it possible.
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# ==> See documentation at the script author's site, above.
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# ==> ################################################################
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# Make script crontab friendly:
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cd $(dirname $0)
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# ==> Change to directory where this script lives.
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# datadir is the directory you want podcasts saved to:
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datadir=$(date +%Y-%m-%d)
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# ==> Will create a directory with the name: YYYY-MM-DD
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# Check for and create datadir if necessary:
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if test ! -d $datadir
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then
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mkdir $datadir
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fi
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# Delete any temp file:
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rm -f temp.log
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# Read the bp.conf file and wget any url not already in the podcast.log file:
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while read podcast
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do # ==> Main action follows.
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file=$(wget -q $podcast -O - | tr '\r' '\n' | tr \' \" | sed -n 's/.*url="\([^"]*\)".*/\1/p')
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for url in $file
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do
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echo $url >> temp.log
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if ! grep "$url" podcast.log > /dev/null
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then
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wget -q -P $datadir "$url"
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fi
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done
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done < bp.conf
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# Move dynamically created log file to permanent log file:
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cat podcast.log >> temp.log
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sort temp.log | uniq > podcast.log
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rm temp.log
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# Create an m3u playlist:
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ls $datadir | grep -v m3u > $datadir/podcast.m3u
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exit 0
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@ -0,0 +1,81 @@
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#!/bin/bash
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# dict-lookup.sh
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# This script looks up definitions in the 1913 Webster's Dictionary.
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# This Public Domain dictionary is available for download
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#+ from various sites, including
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#+ Project Gutenberg (http://www.gutenberg.org/etext/247).
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#
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# Convert it from DOS to UNIX format (only LF at end of line)
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#+ before using it with this script.
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# Store the file in plain, uncompressed ASCII.
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# Set DEFAULT_DICTFILE variable below to filename and path.
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E_BADARGS=65
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MAXCONTEXTLINES=50 # Maximum number of lines to show.
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DEFAULT_DICTFILE="webster1913-dict.txt" # Default dictionary file name/path.
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# Change this as necessary.
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# Note:
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# ----
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# The particular edition of the 1913 Webster's
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#+ begins each entry with an uppercase letter
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#+ (lowercase for the remaining characters).
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# Only the very first line of an entry begins this way,
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#+ and that's why the search algorithm below works.
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if [[ -z $(echo "$1" | sed -n '/^[A-Z]/p') ]]
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# Must at least specify word to look up, and
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#+ it must start with an uppercase letter.
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then
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echo "Usage: `basename $0` Word-to-define [dictionary-file]"
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echo
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echo "Note: Word to look up must start with capital letter,"
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echo "with the rest of the word in lowercase."
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echo "--------------------------------------------"
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echo "Examples: Abandon, Dictionary, Marking, etc."
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exit $E_BADARGS
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fi
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if [ -z "$2" ] # May specify different dictionary.
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then
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dictfile=$DEFAULT_DICTFILE
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else
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dictfile="$2"
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fi
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# ---------------------------------------------------------
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Definition=$(fgrep -A $MAXCONTEXTLINES "$1 \\" "$dictfile")
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# Definitions in form "Word \..."
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#
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# And, yes, "fgrep" is fast enough to search
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#+ even a very large text file.
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# Now, snip out just the definition block.
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echo "$Definition" |
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sed -n '1,/^[A-Z]/p' |
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# Print from first line of output
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#+ to the first line of the next entry.
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sed '$d' | sed '$d'
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# Delete last two lines of output
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#+ (blank line and first line of next entry).
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# ---------------------------------------------------------
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exit 0
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# Exercises:
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# ---------
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# 1) Modify the script to accept any type of alphabetic input
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# + (uppercase, lowercase, mixed case), and convert it
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# + to an acceptable format for processing.
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# See lines 18-20.
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#
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# 2) Convert the script to a GUI application,
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# + using something like "gdialog" . . .
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# The script will then no longer take its argument(s)
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# + from the command line.
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@ -0,0 +1,384 @@
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#!/bin/bash
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# horserace.sh: very simple horserace simulation.
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# Author: Stefano Palmeri
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# Used with permission.
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################################################################
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# Goals of the script:
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# playing with escape sequences and terminal colors.
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#
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# Exercise:
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# Edit the script to make it run less randomly,
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#+ set up a fake betting shop . . .
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# Um . . . um . . . it's starting to remind me of a movie . . .
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#
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# The script gives each horse a random handicap.
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# The odds are calculated upon horse handicap
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#+ and are expressed in European(?) style.
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# E.g.: odds=3.75 means that if you bet $1 and win,
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#+ you receive $3.75.
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#
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# The script has been tested with a GNU/Linux OS,
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#+ using xterm and rxvt, and konsole.
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# On a machine with an AMD 900 MHz processor,
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#+ the average race time is 75 seconds.
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# On faster computers the race time would be lower.
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# So, if you want more suspense, reset the USLEEP_ARG variable.
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#
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# Script by Stefano Palmeri.
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################################################################
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E_RUNERR=65
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# Check if md5sum and bc are installed.
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if ! which bc &> /dev/null; then
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echo bc is not installed.
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echo "Can\'t run . . . "
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exit $E_RUNERR
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fi
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if ! which md5sum &> /dev/null; then
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echo md5sum is not installed.
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echo "Can\'t run . . . "
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exit $E_RUNERR
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fi
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# Set the following variable to slow down script execution.
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# It will be passed as the argument for usleep (man usleep)
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#+ and is expressed in microseconds (500000 = half a second).
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USLEEP_ARG=0
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# Clean up the temp directory, restore terminal cursor and
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#+ terminal colors -- if script interrupted by Ctl-C.
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trap 'echo -en "\E[?25h"; echo -en "\E[0m"; stty echo;\
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tput cup 20 0; rm -fr $HORSE_RACE_TMP_DIR' TERM EXIT
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# See the chapter on debugging for an explanation of 'trap.'
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# Set a unique (paranoid) name for the temp directory the script needs.
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HORSE_RACE_TMP_DIR=$HOME/.horserace-`date +%s`-`head -c10 /dev/urandom | md5sum | head -c30`
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# Create the temp directory and move right in.
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mkdir $HORSE_RACE_TMP_DIR
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cd $HORSE_RACE_TMP_DIR
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# This function moves the cursor to line $1 column $2 and then prints $3.
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# E.g.: "move_and_echo 5 10 linux" is equivalent to
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#+ "tput cup 4 9; echo linux", but with one command instead of two.
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# Note: "tput cup" defines 0 0 the upper left angle of the terminal,
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#+ echo defines 1 1 the upper left angle of the terminal.
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move_and_echo() {
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echo -ne "\E[${1};${2}H""$3"
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}
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# Function to generate a pseudo-random number between 1 and 9.
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random_1_9 () {
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head -c10 /dev/urandom | md5sum | tr -d [a-z] | tr -d 0 | cut -c1
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}
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# Two functions that simulate "movement," when drawing the horses.
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draw_horse_one() {
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echo -n " "//$MOVE_HORSE//
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}
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draw_horse_two(){
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echo -n " "\\\\$MOVE_HORSE\\\\
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}
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# Define current terminal dimension.
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N_COLS=`tput cols`
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N_LINES=`tput lines`
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# Need at least a 20-LINES X 80-COLUMNS terminal. Check it.
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if [ $N_COLS -lt 80 ] || [ $N_LINES -lt 20 ]; then
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echo "`basename $0` needs a 80-cols X 20-lines terminal."
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echo "Your terminal is ${N_COLS}-cols X ${N_LINES}-lines."
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exit $E_RUNERR
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fi
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# Start drawing the race field.
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# Need a string of 80 chars. See below.
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BLANK80=`seq -s "" 100 | head -c80`
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clear
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# Set foreground and background colors to white.
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echo -ne '\E[37;47m'
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# Move the cursor on the upper left angle of the terminal.
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tput cup 0 0
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# Draw six white lines.
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for n in `seq 5`; do
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echo $BLANK80 # Use the 80 chars string to colorize the terminal.
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done
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# Sets foreground color to black.
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echo -ne '\E[30m'
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move_and_echo 3 1 "START 1"
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move_and_echo 3 75 FINISH
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move_and_echo 1 5 "|"
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move_and_echo 1 80 "|"
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move_and_echo 2 5 "|"
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move_and_echo 2 80 "|"
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move_and_echo 4 5 "| 2"
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move_and_echo 4 80 "|"
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move_and_echo 5 5 "V 3"
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move_and_echo 5 80 "V"
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# Set foreground color to red.
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echo -ne '\E[31m'
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# Some ASCII art.
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move_and_echo 1 8 "..@@@..@@@@@...@@@@@.@...@..@@@@..."
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move_and_echo 2 8 ".@...@...@.......@...@...@.@......."
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move_and_echo 3 8 ".@@@@@...@.......@...@@@@@.@@@@...."
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move_and_echo 4 8 ".@...@...@.......@...@...@.@......."
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move_and_echo 5 8 ".@...@...@.......@...@...@..@@@@..."
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move_and_echo 1 43 "@@@@...@@@...@@@@..@@@@..@@@@."
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move_and_echo 2 43 "@...@.@...@.@.....@.....@....."
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move_and_echo 3 43 "@@@@..@@@@@.@.....@@@@...@@@.."
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move_and_echo 4 43 "@..@..@...@.@.....@.........@."
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move_and_echo 5 43 "@...@.@...@..@@@@..@@@@.@@@@.."
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# Set foreground and background colors to green.
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echo -ne '\E[32;42m'
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# Draw eleven green lines.
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tput cup 5 0
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for n in `seq 11`; do
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echo $BLANK80
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done
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# Set foreground color to black.
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echo -ne '\E[30m'
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tput cup 5 0
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# Draw the fences.
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echo "++++++++++++++++++++++++++++++++++++++\
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++++++++++++++++++++++++++++++++++++++++++"
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tput cup 15 0
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echo "++++++++++++++++++++++++++++++++++++++\
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++++++++++++++++++++++++++++++++++++++++++"
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# Set foreground and background colors to white.
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echo -ne '\E[37;47m'
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# Draw three white lines.
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for n in `seq 3`; do
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echo $BLANK80
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done
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# Set foreground color to black.
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echo -ne '\E[30m'
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# Create 9 files to stores handicaps.
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for n in `seq 10 7 68`; do
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touch $n
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done
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# Set the first type of "horse" the script will draw.
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HORSE_TYPE=2
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# Create position-file and odds-file for every "horse".
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#+ In these files, store the current position of the horse,
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#+ the type and the odds.
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for HN in `seq 9`; do
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touch horse_${HN}_position
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touch odds_${HN}
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echo \-1 > horse_${HN}_position
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echo $HORSE_TYPE >> horse_${HN}_position
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# Define a random handicap for horse.
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HANDICAP=`random_1_9`
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# Check if the random_1_9 function returned a good value.
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while ! echo $HANDICAP | grep [1-9] &> /dev/null; do
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HANDICAP=`random_1_9`
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done
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# Define last handicap position for horse.
|
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LHP=`expr $HANDICAP \* 7 + 3`
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for FILE in `seq 10 7 $LHP`; do
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echo $HN >> $FILE
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done
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# Calculate odds.
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case $HANDICAP in
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1) ODDS=`echo $HANDICAP \* 0.25 + 1.25 | bc`
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echo $ODDS > odds_${HN}
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;;
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2 | 3) ODDS=`echo $HANDICAP \* 0.40 + 1.25 | bc`
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echo $ODDS > odds_${HN}
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;;
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4 | 5 | 6) ODDS=`echo $HANDICAP \* 0.55 + 1.25 | bc`
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echo $ODDS > odds_${HN}
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;;
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7 | 8) ODDS=`echo $HANDICAP \* 0.75 + 1.25 | bc`
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echo $ODDS > odds_${HN}
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;;
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9) ODDS=`echo $HANDICAP \* 0.90 + 1.25 | bc`
|
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echo $ODDS > odds_${HN}
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esac
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||||
|
||||
|
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done
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|
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# Print odds.
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print_odds() {
|
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tput cup 6 0
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echo -ne '\E[30;42m'
|
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for HN in `seq 9`; do
|
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echo "#$HN odds->" `cat odds_${HN}`
|
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done
|
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}
|
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|
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# Draw the horses at starting line.
|
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draw_horses() {
|
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tput cup 6 0
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echo -ne '\E[30;42m'
|
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for HN in `seq 9`; do
|
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echo /\\$HN/\\" "
|
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done
|
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}
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|
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print_odds
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|
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echo -ne '\E[47m'
|
||||
# Wait for a enter key press to start the race.
|
||||
# The escape sequence '\E[?25l' disables the cursor.
|
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tput cup 17 0
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echo -e '\E[?25l'Press [enter] key to start the race...
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read -s
|
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|
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# Disable normal echoing in the terminal.
|
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# This avoids key presses that might "contaminate" the screen
|
||||
#+ during the race.
|
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stty -echo
|
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|
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# --------------------------------------------------------
|
||||
# Start the race.
|
||||
|
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draw_horses
|
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echo -ne '\E[37;47m'
|
||||
move_and_echo 18 1 $BLANK80
|
||||
echo -ne '\E[30m'
|
||||
move_and_echo 18 1 Starting...
|
||||
sleep 1
|
||||
|
||||
# Set the column of the finish line.
|
||||
WINNING_POS=74
|
||||
|
||||
# Define the time the race started.
|
||||
START_TIME=`date +%s`
|
||||
|
||||
# COL variable needed by following "while" construct.
|
||||
COL=0
|
||||
|
||||
while [ $COL -lt $WINNING_POS ]; do
|
||||
|
||||
MOVE_HORSE=0
|
||||
|
||||
# Check if the random_1_9 function has returned a good value.
|
||||
while ! echo $MOVE_HORSE | grep [1-9] &> /dev/null; do
|
||||
MOVE_HORSE=`random_1_9`
|
||||
done
|
||||
|
||||
# Define old type and position of the "randomized horse".
|
||||
HORSE_TYPE=`cat horse_${MOVE_HORSE}_position | tail -1`
|
||||
COL=$(expr `cat horse_${MOVE_HORSE}_position | head -1`)
|
||||
|
||||
ADD_POS=1
|
||||
# Check if the current position is an handicap position.
|
||||
if seq 10 7 68 | grep -w $COL &> /dev/null; then
|
||||
if grep -w $MOVE_HORSE $COL &> /dev/null; then
|
||||
ADD_POS=0
|
||||
grep -v -w $MOVE_HORSE $COL > ${COL}_new
|
||||
rm -f $COL
|
||||
mv -f ${COL}_new $COL
|
||||
else ADD_POS=1
|
||||
fi
|
||||
else ADD_POS=1
|
||||
fi
|
||||
COL=`expr $COL + $ADD_POS`
|
||||
echo $COL > horse_${MOVE_HORSE}_position # Store new position.
|
||||
|
||||
# Choose the type of horse to draw.
|
||||
case $HORSE_TYPE in
|
||||
1) HORSE_TYPE=2; DRAW_HORSE=draw_horse_two
|
||||
;;
|
||||
2) HORSE_TYPE=1; DRAW_HORSE=draw_horse_one
|
||||
esac
|
||||
echo $HORSE_TYPE >> horse_${MOVE_HORSE}_position # Store current type.
|
||||
|
||||
# Set foreground color to black and background to green.
|
||||
echo -ne '\E[30;42m'
|
||||
|
||||
# Move the cursor to new horse position.
|
||||
tput cup `expr $MOVE_HORSE + 5` `cat horse_${MOVE_HORSE}_position | head -1`
|
||||
|
||||
# Draw the horse.
|
||||
$DRAW_HORSE
|
||||
usleep $USLEEP_ARG
|
||||
|
||||
# When all horses have gone beyond field line 15, reprint odds.
|
||||
touch fieldline15
|
||||
if [ $COL = 15 ]; then
|
||||
echo $MOVE_HORSE >> fieldline15
|
||||
fi
|
||||
if [ `wc -l fieldline15 | cut -f1 -d " "` = 9 ]; then
|
||||
print_odds
|
||||
: > fieldline15
|
||||
fi
|
||||
|
||||
# Define the leading horse.
|
||||
HIGHEST_POS=`cat *position | sort -n | tail -1`
|
||||
|
||||
# Set background color to white.
|
||||
echo -ne '\E[47m'
|
||||
tput cup 17 0
|
||||
echo -n Current leader: `grep -w $HIGHEST_POS *position | cut -c7`" "
|
||||
|
||||
done
|
||||
|
||||
# Define the time the race finished.
|
||||
FINISH_TIME=`date +%s`
|
||||
|
||||
# Set background color to green and enable blinking text.
|
||||
echo -ne '\E[30;42m'
|
||||
echo -en '\E[5m'
|
||||
|
||||
# Make the winning horse blink.
|
||||
tput cup `expr $MOVE_HORSE + 5` `cat horse_${MOVE_HORSE}_position | head -1`
|
||||
$DRAW_HORSE
|
||||
|
||||
# Disable blinking text.
|
||||
echo -en '\E[25m'
|
||||
|
||||
# Set foreground and background color to white.
|
||||
echo -ne '\E[37;47m'
|
||||
move_and_echo 18 1 $BLANK80
|
||||
|
||||
# Set foreground color to black.
|
||||
echo -ne '\E[30m'
|
||||
|
||||
# Make winner blink.
|
||||
tput cup 17 0
|
||||
echo -e "\E[5mWINNER: $MOVE_HORSE\E[25m"" Odds: `cat odds_${MOVE_HORSE}`"\
|
||||
" Race time: `expr $FINISH_TIME - $START_TIME` secs"
|
||||
|
||||
# Restore cursor and old colors.
|
||||
echo -en "\E[?25h"
|
||||
echo -en "\E[0m"
|
||||
|
||||
# Restore echoing.
|
||||
stty echo
|
||||
|
||||
# Remove race temp directory.
|
||||
rm -rf $HORSE_RACE_TMP_DIR
|
||||
|
||||
tput cup 19 0
|
||||
|
||||
exit 0
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
#! /bin/sh
|
||||
# letter-count2.sh: Counting letter occurrences in a text file.
|
||||
#
|
||||
# Script by nyal [nyal@voila.fr].
|
||||
# Used with permission.
|
||||
# Recommented by document author.
|
||||
# Version 1.1: Modified to work with gawk 3.1.3.
|
||||
# (Will still work with earlier versions.)
|
||||
|
||||
|
||||
INIT_TAB_AWK=""
|
||||
# Parameter to initialize awk script.
|
||||
count_case=0
|
||||
FILE_PARSE=$1
|
||||
|
||||
E_PARAMERR=65
|
||||
|
||||
usage()
|
||||
{
|
||||
echo "Usage: letter-count.sh file letters" 2>&1
|
||||
# For example: ./letter-count2.sh filename.txt a b c
|
||||
exit $E_PARAMERR # Not enough arguments passed to script.
|
||||
}
|
||||
|
||||
if [ ! -f "$1" ] ; then
|
||||
echo "$1: No such file." 2>&1
|
||||
usage # Print usage message and exit.
|
||||
fi
|
||||
|
||||
if [ -z "$2" ] ; then
|
||||
echo "$2: No letters specified." 2>&1
|
||||
usage
|
||||
fi
|
||||
|
||||
shift # Letters specified.
|
||||
for letter in `echo $@` # For each one . . .
|
||||
do
|
||||
INIT_TAB_AWK="$INIT_TAB_AWK tab_search[${count_case}] = \"$letter\"; final_tab[${count_case}] = 0; "
|
||||
# Pass as parameter to awk script below.
|
||||
count_case=`expr $count_case + 1`
|
||||
done
|
||||
|
||||
# DEBUG:
|
||||
# echo $INIT_TAB_AWK;
|
||||
|
||||
cat $FILE_PARSE |
|
||||
# Pipe the target file to the following awk script.
|
||||
|
||||
# ----------------------------------------------------------------------------------
|
||||
# Earlier version of script used:
|
||||
# awk -v tab_search=0 -v final_tab=0 -v tab=0 -v nb_letter=0 -v chara=0 -v chara2=0 \
|
||||
|
||||
awk \
|
||||
"BEGIN { $INIT_TAB_AWK } \
|
||||
{ split(\$0, tab, \"\"); \
|
||||
for (chara in tab) \
|
||||
{ for (chara2 in tab_search) \
|
||||
{ if (tab_search[chara2] == tab[chara]) { final_tab[chara2]++ } } } } \
|
||||
END { for (chara in final_tab) \
|
||||
{ print tab_search[chara] \" => \" final_tab[chara] } }"
|
||||
# ----------------------------------------------------------------------------------
|
||||
# Nothing all that complicated, just . . .
|
||||
#+ for-loops, if-tests, and a couple of specialized functions.
|
||||
|
||||
exit $?
|
||||
|
||||
# Compare this script to letter-count.sh.
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
#!/bin/bash
|
||||
# Generic shell wrapper that performs an operation
|
||||
#+ and logs it.
|
||||
|
||||
# Must set the following two variables.
|
||||
OPERATION=
|
||||
# Can be a complex chain of commands,
|
||||
#+ for example an awk script or a pipe . . .
|
||||
LOGFILE=
|
||||
# Command-line arguments, if any, for the operation.
|
||||
|
||||
|
||||
OPTIONS="$@"
|
||||
|
||||
|
||||
# Log it.
|
||||
echo "`date` + `whoami` + $OPERATION "$@"" >> $LOGFILE
|
||||
# Now, do it.
|
||||
exec $OPERATION "$@"
|
||||
|
||||
# It's necessary to do the logging before the operation.
|
||||
# Why?
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
#!/bin/bash
|
||||
# spawn.sh
|
||||
|
||||
|
||||
PIDS=$(pidof sh $0) # Process IDs of the various instances of this script.
|
||||
P_array=( $PIDS ) # Put them in an array (why?).
|
||||
echo $PIDS # Show process IDs of parent and child processes.
|
||||
let "instances = ${#P_array[*]} - 1" # Count elements, less 1.
|
||||
# Why subtract 1?
|
||||
echo "$instances instance(s) of this script running."
|
||||
echo "[Hit Ctl-C to exit.]"; echo
|
||||
|
||||
|
||||
sleep 1 # Wait.
|
||||
sh $0 # Play it again, Sam.
|
||||
|
||||
exit 0 # Not necessary; script will never get to here.
|
||||
# Why not?
|
||||
|
||||
# After exiting with a Ctl-C,
|
||||
#+ do all the spawned instances of the script die?
|
||||
# If so, why?
|
||||
|
||||
# Note:
|
||||
# ----
|
||||
# Be careful not to run this script too long.
|
||||
# It will eventually eat up too many system resources.
|
||||
|
||||
# Is having a script spawn multiple instances of itself
|
||||
#+ an advisable scripting technique.
|
||||
# Why or why not?
|
||||
Loading…
Reference in New Issue