for

for

 

x

 [

in

 

list

] 

do

      

commands

  

done

For variable x (in optional list of values) do commands . If list is omitted, "$@" (positional parameters) is assumed.

Examples

Paginate files specified on the command line; save each result:

for file 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

Extract a one-word title from each file and use as new filename:

for file do      name=`sed -n 's/NAME: //p' $file`      mv $file $name done