shell 菜单的实现

1.命令行菜单

#!/bin/bash
#simple script menu

function diskspace {
    clear
    df -k
}

function whoseon {
    clear
    who
}

function memusage {
    clear 
    free -m
}

function menu {
    clear
    echo
    echo -e "\t\t\t SysAdmin Menu \n"
    echo -e "\t 1.Dispaly Disk usage"
    echo -e "\t 2.Dispaly who are on"
    echo -e "\t 3.Display memuage "
    echo -en "\t\tEnter your choice:" 
    read -n 1 option
}

while [ 1 ]
do
    menu
    case $option in
    0)
        break ;;
    1)
        diskspace ;;
    2)
        whoseon ;;
    *)
        clear
        echo "sorry wrong selection" ;;
    esac
    echo -en "\n\n\t\tHit any key to continue"
    read -n 1 option 
done
clear


//result
         SysAdmin Menu 

     1.Dispaly Disk usage
     2.Dispaly who are on
     3.Display memuage 
        Enter your choice:^C

2.select 语法

#!/bin/bash
#simple script menu

function diskspace {
    clear
    df -k
}

function whoseon {
    clear
    who
}

function memusage {
    clear 
    free -m
}

PS3="Enter your OPtion:"
select option in "disk" "who" "memory" "exit"
do
    case $option in
    "disk")
        diskspace ;;
    "who")
        whoseon ;;
    "memory")
        meusage ;;
    "exit")
        break ;;
    *)
        clear
        echo "Sorry wrong selection" ;;
    esac
done
clear

//result
Enter your OPtion:
1) disk
2) who
3) memory
4) exit
Enter your OPtion:

3.图形化的

#!/bin/bash
#using dialog to create menu

temp=`mktemp -t test.XXXXXX`
temp2=`mktemp -t test.XXXXXX`

function diskspace {
    df -k > $temp
    dialog --textbox $temp 20 50
}

function whoseon {
    who > $temp
    dialog --textbox $temp 20 50
}


function memusage {
    free -m > $temp
    dialog --textbox $temp 20 50
}

while [ 1 ]
do
    dialog --menu "Sys Menu" 20 30 10 1 "disk" 2 "users" 3 "memory" 0 "exit" 2> $temp2 
    if [ $? -eq 1 ]
    then
        break
    fi

    selection=`cat $temp2`
    case $selection in
    1)
        diskspace ;;
    2)
        whoseon ;;
    3)
        memusage ;;
    0)
        break ;;
    *)
        dialog --msgbox "Sorry invalid selection" 10 30 
    esac
done
rm -f $temp 2> /dev/null
rm -r $temp2 2> /dev/null

Paste_Image.png