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Merge branch 'master' of github.com:tLDP/LDP

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Martin A. Brown 2016-04-02 15:26:20 -07:00
parent cf63a77734 f5e1fb5d03
commit 605cdea5a7
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LDP/guide/docbook/abs-guide/abs-guide.xml
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@ -576,7 +576,7 @@
<para>Shell scripting hearkens back to the classic UNIX philosophy <para>Shell scripting hearkens back to the classic UNIX philosophy
of breaking complex projects into simpler subtasks, of chaining of breaking complex projects into simpler subtasks, of chaining
together components and utilities. Many consider this a better, together components and utilities. Many consider this a better,
or at least more esthetically pleasing approach to problem solving or at least more aesthetically pleasing approach to problem solving
than using one of the new generation of high-powered all-in-one than using one of the new generation of high-powered all-in-one
languages, such as <firstterm>Perl</firstterm>, which attempt to languages, such as <firstterm>Perl</firstterm>, which attempt to
be all things to all people, but at the cost of forcing you to be all things to all people, but at the cost of forcing you to

18
LDP/howto/linuxdoc/Bash-Prog-Intro-HOWTO.sgml
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@ -538,7 +538,7 @@ Functions
</verb></tscreen> </verb></tscreen>
<P> Lines 2-4 contain the 'quit' function. Lines 5-7 contain the 'hello' function <P> Lines 2-4 contain the 'quit' function. Lines 5-7 contain the 'hello' function
If you are not absolutely sure about what this script does, please try it!. If you are not absolutely sure about what this script does, please try it!.
<P> Notice that a functions don't need to be declared in any specific order. <P> Notice that functions don't need to be declared in any specific order.
<P> When running the script you'll notice that first: the function 'hello' is <P> When running the script you'll notice that first: the function 'hello' is
called, second the 'quit' function, and the program never reaches line 10. called, second the 'quit' function, and the program never reaches line 10.
</sect1> </sect1>
@ -626,7 +626,7 @@ Misc
<!-- Reading user input --> <!-- Reading user input -->
<sect1> <sect1>
Reading user input with read Reading user input with read
<P> In many ocations you may want to prompt the user for some input, and <P> In many occasions you may want to prompt the user for some input, and
there are several ways there are several ways
to achive this. This is one of those ways: to achive this. This is one of those ways:
<tscreen><verb> <tscreen><verb>
@ -661,7 +661,7 @@ Misc
<P> <P>
<P> If you need to use fractions, or more math or you just want it, you <P> If you need to use fractions, or more math or you just want it, you
can use bc to evaluate arithmetic expressions. can use bc to evaluate arithmetic expressions.
<P> if i ran "echo $[3/4]" at the command prompt, it would return 0 <P> If I ran "echo $[3/4]" at the command prompt, it would return 0
because bash only uses integers when answering. If you ran because bash only uses integers when answering. If you ran
"echo 3/4|bc -l", it would properly return 0.75. "echo 3/4|bc -l", it would properly return 0.75.
</sect1> </sect1>
@ -705,7 +705,7 @@ Misc
<!-- Capturing a commands output --> <!-- Capturing a commands output -->
<sect1> <sect1>
Capturing a commands output Capturing a commands output
<P> This little scripts show all tables from all databases (assuming you got MySQL installed). <P> This little script shows all tables from all databases (assuming you got MySQL installed).
Also, consider changing the 'mysql' command to use a valid username and password. Also, consider changing the 'mysql' command to use a valid username and password.
<tscreen><verb> <tscreen><verb>
#!/bin/bash #!/bin/bash
@ -799,9 +799,9 @@ Tables
<sect1> <sect1>
Useful commands Useful commands
<P> This section was re-written by Kees (see thank to...) <P> This section was re-written by Kees (see thank to...)
<P> Some of these command's almost contain complete programming languages. <P> Some of these commands almost contain complete programming languages.
From those commands only the basics will be explained. For a more detailed From those commands only the basics will be explained. For a more detailed
description, have a closer look at the man pages of each command. description, have a closer look at the main pages of each command.
<bf/sed/ (stream editor) <bf/sed/ (stream editor)
@ -829,7 +829,7 @@ Tables
<P> Many implementations of the AWK programming language exist (most known interpreters are GNU's <P> Many implementations of the AWK programming language exist (most known interpreters are GNU's
gawk and 'new awk' mawk.) The principle is simple: AWK scans for a pattern, and for every gawk and 'new awk' mawk.) The principle is simple: AWK scans for a pattern, and for every
matching pattern a action will be performed. matching pattern an action will be performed.
<P> Again, I've created a dummy file containing the following lines: <P> Again, I've created a dummy file containing the following lines:
<P> <it/"test123/ <P> <it/"test123/
<P> <it/test/ <P> <it/test/
@ -942,7 +942,7 @@ Tables
</verb></tscreen> </verb></tscreen>
<it/80/ <it/80/
<P> Shows the number of characters possible in x direction. <P> Shows the number of characters possible in x direction.
<P> It it higly recommended to be familiarized with these programs (at least). There are tons of <P> It is higly recommended to be familiarized with these programs (at least). There are tons of
little programs that will let you do real magic on the command line. little programs that will let you do real magic on the command line.
<P> [some samples are taken from man pages or FAQs] <P> [some samples are taken from man pages or FAQs]
</sect1> </sect1>
@ -1045,7 +1045,7 @@ More Scripts
# this for loop iterates through all of the files that we give the program # this for loop iterates through all of the files that we give the program
# it does one rename per file given using the program 'sed' # it does one rename per file given using the program 'sed'
# this is a sinple command line program that parses standard input and # this is a simple command line program that parses standard input and
# replaces a set expression with a give string # replaces a set expression with a give string
# here we pass it the file name ( as standard input) and replace the nessesary # here we pass it the file name ( as standard input) and replace the nessesary
# text # text