64 lines
1.4 KiB
Bash
64 lines
1.4 KiB
Bash
#! /bin/bash
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#
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# original from:
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# newext: change filename extension
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# @(#) newext.sh 1.1 93/04/13
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# 90/06/06 john h. dubois iii (john@armory.com)
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# 90/11/14 changed ksh-specific code to hybrid: if running under Bourne,
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# uses expr instead of ksh builtin ops. Removed SYSV specific code.
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# 91/08/06 added -t option
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# 92/11/06 made earlier code actually work!
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# 93/04/13 If no filenames given, act on files in current dir
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#
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# conversion to bash v2 syntax by Chet Ramey
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usage="Usage: newext [-th] <oldext> <newext> [filename ...]"
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phelp()
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{
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echo "$usage
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Rename all given files that end in oldext with newext replacing oldext.
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If no filenames are given, all files in the current directory that end
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in oldext are acted on (no filename is equivalent to '*').
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Options:
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-h: Print this help.
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-t: Test: No action is taken except to print the mv commands that would
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be executed if -t was not given."
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}
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while getopts "th" opt; do
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case "$opt" in
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t) echo=echo;;
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h) phelp; exit 0;;
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*) echo "$usage" 1>&2; exit 2;;
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esac
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done
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shift $((OPTIND - 1))
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oldext=$1
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newext=$2
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case $# in
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[01]) echo -e "$usage\nUse -h for help." 1>&2; exit 2;;
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2) shift ; shift; set -- *;;
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*) shift ; shift;;
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esac
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found=
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for file
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do
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case "$file" in
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*$oldext)
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newname="${file%$oldext}$newext"
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$echo mv "$file" "$newname"
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found=true;;
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esac
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done
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if [ -z "$found" ]; then
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echo "No files ending in \"$oldext\"."
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exit 1
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fi
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exit 0
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