Shell Programming and Scripting

 
find <dir_path> -type f -print | while read file
do
       sed -i 's,/usr/spool/progs/,/spool/progs/,g' $file
done

for files in `find . -name "*.txt" | xargs grep -l "network=/usr/spool/progs/"`
do
        echo "$files"
        sed 's,network=/usr/spool/progs/,network=/spool/progs/,g' $files > $files.new
done

echo ${network}|sed 's/^\/[^/]*\(.*\)/\1/'
or 
netw=$(echo ${network}|sed 's/^\/[^/]*\(.*\)/\1/')