Homework & Coursework Questions

#! /bin/sh
choice=0
while [ $choice -ne 4 ]; do
clear
echo "        Menu"
echo "1.Username|Directory|Shell|Calender"
echo "2.Arithmetic Operation"
echo "3.Find the first letter"
echo "4.exit-Please confirm"
echo "Please enter a choice from 1 to 4 only"

read choice
case $choice in
"1")
if [ $# -eq 1 -o $# -eq 2 ]; then
 if [ -d $1 ]; then
echo Your user name is $USER
echo Your Home directory is $HOME
echo Your Default shell is $SHELL
echo Press anykey to see the 2011 calender
read a
cal 2011
echo Press anykey to see long listing of $1
read a
ls -rR $1
  if [ $# -eq 2 ]; then
   if [ -f $2 ]; then
echo "Your name is $USER" >> $2
echo "Your Home directory is $HOME" >> $2
echo "Your Default shell is $SHELL" >> $2
cal 2011 >> $2
ls -rR $1 >> $2
   else
echo The second arguement must be a valid file
   fi
  fi
 else
echo The directory is invalid
 fi
else
echo Please include 1 or 2 arguments in the command
echo Example : ./Assignment4.SH directory file-name
fi
;;


"2");;
"3");;
"4");;
*) echo "Sorry,Invalid choice";;
esac
if [ $choice -ne 4 ]; then
echo "Press Enter to continue"
read a
fi
done
exit