Linux in a Nutshell, Third Edition

Name

for

Synopsis

for x [in list]

  do

     commands

  done

Description

Assign each word in list to x in turn and execute commands. If list is omitted, $@ (positional parameters) is assumed.

Examples

Paginate all files in the current directory; save each result:

                     for file in *
do
     pr $file > $file.tmp
done

Search chapters for a list of words (like fgrep -f):

                     for item in `cat program_list`
do
     echo "Checking chapters for"
     echo "references to program $item..."
     grep -c "$item.[co]" chap*
done