undos Code

#!/bin/bash

for f in $*
do
    dir=`dirname $f`
    mkdir -p $dir/sv
    if [ ! -d $dir/sv ]
    then
        echo "cannot backup to $dir/sv"
        exit 1
    fi

    cp $f $dir/sv

    cat $f | tr -d '^M' > $f.sv
    mv $f.sv $f

    chmod 755 $f

done