Linux&shell之高级Shell脚本编程-创建菜单

写在前面：案例、常用、归类、解释说明。（By Jim）

创建菜单
#!/bin/bash
# testing the script
clear
echo
echo -e " Sys Admin Menu "
echo -e " 1.Display disk space"
echo -e " 2.Display logged on users"
echo -e " 3.Display memory usage"
echo -e " 0.Exit menu "
echo -en " Enter option:"
（这段代码很有意思，会显示目录的效果）

创建菜单函数
function diskspace {
  clear
  df -k
}

function whoseon {
  clear
  who
}

function memusage {
  clear
  cat /proc/meminfo
}
添加菜单逻辑
case $option in
0)
  break ;;
1)
  diskspace ;;
2)
  whoseon ;;
3)
  menusage ;;
*)
  clear
  echo "Sorry,wrong selection" ;;
esac

完整的菜单如下：

#!/bin/bash
# testing the script
function diskspace {
  clear
  df -k
}

function whoseon {
  clear
  who
}

function memusage {
  clear
  cat /proc/meminfo
}

function menu {
  clear
  echo
  echo -e " Sys Admin Menu "
  echo -e " 1.Display disk space"
  echo -e " 2.Display logged on users"
  echo -e " 3.Display memory usage"
  echo -e " 0.Exit menu "
  echo -en " Enter option:"
  read -n 1 option
}
while [ 1 ]
do
menu
case $option in
0)
  break ;;
1)
  diskspace ;;
2)
  whoseon ;;
3)
  menusage ;;
*)
  clear
  echo "Sorry,wrong selection" ;;
esac
echo -en " Hit any key to continue"
read -n 1 line
done
clear