Unix shell script 1

The following script finds a given string in the files in given directory. The directory is passed as an argument and it has to be relative path from the users home directory.

#!/bin/csh

if(  !( -d ~/$1 ) ) then
 echo No directory supplied
 exit
endif

echo Enter string:
set w = $<

foreach a ( `ls ~/$1` )
    if( !( -d $a ) ) then
     set s = `grep -s $w ~/$1/$a | wc -l`

    if ( $s>0 ) then
     echo $a : $w found
    else
     echo $a : $w not found
    endif
   endif
end

As a result we get listing of all files, saying in which the given string has been found and in which has not.