创建菜单#!/bin/bash# testing the scriptclearechoecho -e "\t\t\tSys Admin Menu\n"echo -e "\t1.Display disk space"echo -e "\t2.Display logged on users"echo -e "\t3.Display memory usage"echo -e "\t0.Exit menu\n\n"echo -en "\t\tEnter 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 "\t\t\tSys Admin Menu\n" echo -e "\t1.Display disk space" echo -e "\t2.Display logged on users" echo -e "\t3.Display memory usage" echo -e "\t0.Exit menu\n\n" echo -en "\t\tEnter option:" read -n 1 option } while [ 1 ] do menu caseoption 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 "\t\t\tSys Admin Menu\n" echo -e "\t1.Display disk space" echo -e "\t2.Display logged on users" echo -e "\t3.Display memory usage" echo -e "\t0.Exit menu\n\n" echo -en "\t\tEnter option:" read -n 1 option } while [ 1 ] do menu caseoption in0) break ;;1) diskspace ;;2) whoseon ;;3) menusage ;;*) clear echo "Sorry,wrong selection" ;;esacecho -en "\n\n\t\tHit any key to continue"read -n 1 linedoneclear
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