mirror of https://github.com/tLDP/LDP
48 lines
1.5 KiB
Bash
48 lines
1.5 KiB
Bash
#!/bin/bash
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# pb.sh: phone book
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# Written by Rick Boivie, and used with permission.
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# Modifications by document author.
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MINARGS=1 # Script needs at least one argument.
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DATAFILE=./phonebook
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PROGNAME=$0
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E_NOARGS=70 # No arguments error.
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if [ $# -lt $MINARGS ]; then
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echo "Usage: "$PROGNAME" data"
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exit $E_NOARGS
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fi
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if [ $# -eq $MINARGS ]; then
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grep $1 "$DATAFILE"
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else
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( shift; "$PROGNAME" $* ) | grep $1
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# Script recursively calls itself.
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fi
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exit 0 # Script exits here.
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# It's o.k. to put non-hashmarked comments
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#+ and data after this point.
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# ------------------------------------------------------------------------
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# Sample "phonebook" datafile:
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John Doe 1555 Main St., Baltimore, MD 21228 (410) 222-3333
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Mary Moe 9899 Jones Blvd., Warren, NH 03787 (603) 898-3232
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Richard Roe 856 E. 7th St., New York, NY 10009 (212) 333-4567
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Sam Roe 956 E. 8th St., New York, NY 10009 (212) 444-5678
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Zoe Zenobia 4481 N. Baker St., San Francisco, SF 94338 (415) 501-1631
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# ------------------------------------------------------------------------
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$bash pb.sh Roe
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Richard Roe 856 E. 7th St., New York, NY 10009 (212) 333-4567
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Sam Roe 956 E. 8th St., New York, NY 10009 (212) 444-5678
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$bash pb.sh Roe Sam
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Sam Roe 956 E. 8th St., New York, NY 10009 (212) 444-5678
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# When more than one argument passed to script,
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#+ prints *only* the line(s) containing all the arguments.
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