94 lines
1.7 KiB
Plaintext
94 lines
1.7 KiB
Plaintext
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#!/bin/sh
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#
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#
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# 1994 (c) Regents of McGill University, School of Computer Science.
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# by Luc Boulianne (lucb@cs.mcgill.ca)
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#
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usage () {
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cat - <<EOC
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Usage: $0 [-h] [-v] files.[0-9]
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Interactively, unrotate a group of files in the current directory. You must
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supply only one copy of the filename group you want to unrotate. If you
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don't, a set of files will be unrotated twice.
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Options:
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[-v] set debugging on
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[-h] this help info
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EOC
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exit 2
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}
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# parse the command line arguments:
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#
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if [ $# -gt 0 ] ; then
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case $1 in
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-v) debug="y" ; shift;;
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-h) usage;; # call the usage funtion
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-*) # Catch anything that doesn't match the
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# previous flags
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echo "Unknown option [$1]";
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usage;;
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esac
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fi
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MV=/bin/mv
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TAR=tar
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GZIP=gzip
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MIDX=9;
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# For solaris ...
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PATH=/usr/ucb:$PATH
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index()
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{
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i=1;
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while [ $i -le ${1:-$MIDX} ] ; do
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echo -n "$i ";
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i=`expr $i + 1`;
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done
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}
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rindex()
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{
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i=${1:-$MIDX};
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while [ $i -gt 0 ] ; do
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echo -n "$i ";
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i=`expr $i - 1`;
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done
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}
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unrotate()
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{
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fn=$1;shift;
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test -f $fn && $MV -f $fn $fn.new && echo $MV -f $fn $fn.new
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test -f $fn.0 && $MV -f $fn.0 $fn && echo $MV -f $fn.0 $fn
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for n in $* ; do
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echo [$n]
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dest=$fn.`expr $n - 1`
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src=$fn.$n
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test -f $src && $MV -f $src $dest && echo $MV -f $src $dest
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done
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}
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idx=`index`;
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if [ x${debug:-x} = yx ] ; then
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set -x;
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fi
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for i do
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file=`echo $i | sed 's/\.[0-9]$//'`
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echo ${file}*
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echo -n "Proceed with the unrotation of the [${file}*] group of files? [n] "
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read ans
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if [ x$ans = xy ] ; then
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unrotate $file $idx && echo "Unrotated files ${file}*"
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fi
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done
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