Tip #324: Search and replace in files named NAME

I'm not sure if there is a simple way to do this from within Vim, but, I wrote this simple script that does it. It basically searches for files named NAMED (whatever name pass) for a given string and replaces that with a given string:
find_replace.sh NAMED "string_to_find" "string_to_replace"

This is all done from the command line without opening Vim.

Of course one could do things like:
                    :let n = 1
                    :while n <= argc()      " loop over all files in arglist
                    :  exe "argument " . n
                    :  " start at the last char in the file and wrap for the
                    :  " first search to find match at start of file
                    :  normal G$
                    :  let flags = "w"
                    :  while search("foo", flags) > 0
                    :    s/foo/bar/g
                    :    let flags = "W"
                    :  endwhile
                    :  update               " write the file if modified
                    :  let n = n + 1
                    :endwhile

As suggested in the Vim help files :-) but, I wanted to go and find only these files... here is the script:
      1 #!/bin/sh
      2 # Luis Mondesi < [email protected] >
      3 # DESCRIPTION:
      4 #   it uses vim to replace a given string for
      5 #   another in a  number of files
      6 #
      7 # usage:
      8 #   find_replace.sh file "string" "replace"
      9 #
     10 if [ $1 -a $2 -a $3 ]; then
     11     for i in `find . -name "$1" -type f | xargs grep -l $2`; do
     12         # how do search and replace
     13         # the screen might flicker... vim opening and closing...
     14         vim -c ":%s/$2/$3/g" -c ":wq" $i
     15     done
     16     exit 0
     17 fi
     18 # I should never reach here
     19 echo -e "USAGE: find_replace.sh file 'string' 'replace' \n\n"
     20 exit 1



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