Shell Programming and Scripting

#!/bin/sh
echo "Please Select a Script"
read SCRIPTSINDIR
#read the current directory and writes them to a file
ls -l -S -r  > $SCRIPTSINDIR
#get the files from the directory
more $SCRIPTSINDIR

print_menu()
{
  n=1
  bar======================================
  printf "%s\n" "$bar" " Please Select a Script"  "$bar"

  for item
  do
     if [[ $item != $prog ]]
     then
      printf "%3d: %s\n" "$n" "$item"
      n=$(( $n + 1 ))
     fi
  done

  echo $prog
  printf "%3d: %s\n" "$n" "Quit"

  printf "%s\n Select 1-%d: " "$bar" "$n"
}

prog=$0
while :
do
  print_menu *.sh
  read x
  case $x in
    [1-$(( $n - 1 ))]) sh `ls -1 *.sh | grep -v $prog | head -n $x | tail -1` ;;
       $n) exit  ;;
        *) echo "Wrong Input\n"
  esac
done

=====================================
 Please Select a Script
=====================================
  1: script1.sh
  2: script2.sh
  3: script3.sh
  4: script4.sh
  5: script5.sh
  6: Quit
=====================================
 Select 1-6: 2
./script5.sh: 27: script2.sh: not found
=====================================
 Please Select a Script
=====================================
  1: script1.sh
  2: script2.sh
  3: script3.sh
  4: script4.sh
  5: script5.sh
  6: Quit
=====================================
 Select 1-6: