|
- avalee//home/javalee/lx>cat js
- #! /bin/ksh
- #scriptname:js
- #the script is example about co-process
- echo "WELCOME TO THE CALCULATOR PROGRAM"
- bc |&
- while true
- do
- echo "Select one of the opertors"
- echo "a)=+ s)=- m)=* d)=/ q)=quit"
- read op
- case $op in
- a) op="+" ;;
- s) op="-" ;;
- m) op="*" ;;
- d) op="/" ;;
- q|Q) op="q" exit ;;
- *) print "wrong option,input again..." ; sleep 1
- continue ;;
- esac
- print -p scale=3
- echo -n "please enter two numbers:"
- read n1 n2
- print -p "$n1" "$op" "$n2"
- read -p result
- print $result
- print -n "continue (y/n)? "
- read answer
- case $answer in
- [Nn]*)
- break;;
- esac
- done
- print "Good bey"
复制代码 请指正;) |
|