shell-case

#!/bin/shecho "Is it morning? Please answer yes or no"read timeofdaycase "$timeofday" inyes) echo "Good Morning";;no)  echo "Good Afternoon";;y)   echo "you input y, Good Morning";;n)   echo  "you input n, Good Afternoon";;*)   echo "Sorry, answer not reconginzed";;esacexit 0

TEST:

$ chmod +x case_usage.sh
$ case_usage.sh
case_usage.sh: command not found       #forget the ./
$ ./case_usage.sh
Is it morning? Please answer yes or no
x
Sorry, answer not reconginzed
$ ./case_usage.sh
Is it morning? Please answer yes or no
n
you input n, Good Afternoon