Shell Programming and Scripting

Sounds like homework....

Code:

#!/bin/ksh
# addline.sh
echo "$1" > tmp.$$
cat "$2" >> tmp.$$
mv tmp.$$ "$2"

usage: addline "stuff to write on line one" myfile

Thanks Jim, I appreciate for your quick response.I know this is a basic script but I'm alien to scripting and more over I'm into testing so dont even know abcd of scripting.I was given a task in shell scripting to complete.

The off uses bash not ksh.So could you please write it in bash.I really appreciate for your help.I have got 5 more simple questions hope you will answer them aswell.

This will work in any POSIX shell (including bash, ksh, etc.):

Code:

{
  printf "%s\n" "$1"
  cat "$2"
} > tempfile.$$
mv tempfile.$$ "$2"