Write a script that behaves both in interactive and non-interactive mode

Write a script that behaves both in interactive and non-interactive mode. When no arguments are supplied, it picks up each C program from current directory and lists the first 10 lines. It then prompts for deletion of the file. If the user supplies arguments with the script, then it works on those files only.

flag=1
if [ $# -ne 0 ];then # IF USER PROVIDE ARGUMENTS
 echo $* >temp
 flag=1
else    # IF USER NOT PROVIDE ARGUMENTS
 ans=`ls *.c`
 if [ "" == "$ans" ];then
  echo "THERE ARE NO C FILE"
  flag=0
 else
  ls *.c>temp
  flag=1
 fi
fi
if [ $flag -eq 1 ];then
 for filename in `cat temp`
 do
  if [ -f $filename ];then
   echo "\t\t\t========="
   echo "\t\t\t$filename"
   echo "\t\t\t========="
   echo " "
   sed -n -e "1,10 p" $filename
   rm -i $filename
  fi
 done
 rm temp
fi

Posted in: Shell Script