Question

我有一个脚本，主菜单是使用case语句完成的。脚本运行，欢迎屏幕信息回显到屏幕，用户点击进入清除欢迎屏幕内容（空读取语句），用户被要求输入对应于菜单项的数字（读取menuNum）。它工作正常，但我想稍微扩展功能，并允许用户跳过欢迎屏幕，并在运行脚本时使用参数直接进入菜单项。

例如，如果我的菜单是：1）文件操作2）用户信息3）进程，那么我希望用户在控制台中键入“scriptfile.sh文件”直接进入文件菜单。这会以某种方式指定menuNum = 1。

我不知道这是否可以使用输入的重定向，或者真的，如果可能的话。任何帮助或提示将不胜感激。谢谢。

基本上，这是我的脚本：

#!/bin/bash
#DEFINE ARGUMENTS
if [[ "$1" = "man" ]]; then man ./manpage.txt; exit; fi #argument "man" opens man page, closes main script
if [ "$1" = "debug" ]
    then clear
    echo -e "This area provides debug information:\n"
    echo -e "There's a lot here, but it's not related to my question."
    echo -e "\nPress [Enter] to continue."
    read
fi 
if [[ "$1" = "file" ]]; then bash tsharonfp.sh < 1; exit; fi #go straight to file menu
if [[ "$1" = "user" ]]; then bash tsharonfp.sh < 2; exit; fi #go straight to user menu
if [[ "$1" = "info" ]]; then bash tsharonfp.sh < 3; exit; fi #go straight to info menu
if [[ "$1" = "fun" ]]; then bash tsharonfp.sh < 4; exit; fi #go straight to fun menu
if [[ "$1" = "process" ]]; then bash tsharonfp.sh < 5; exit; fi #go straight to proc menu
#/DEFINE ARGUMENTS
clear
echo -e "My script title, contact info, and other stuff gets printed to screen here."
read #hitting enter clears welcome screen stuff    
clear
while : #opens while1 loop
do #while1 loop
echo -e "Main Menu\n"
echo -e "[1] File Menu\n[2] User Menu\n[3] Info Menu\n[4] Fun Menu\n[5] Process Menu\n[88] Exit\n[99] Shutdown"
echo -ne "\nEnter Choice: "
read menuNum

case $menuNum in #open mainmenu case
    1) #File;; #statement isn't commented, of course, but you get the idea
    2) #user;;
    3) #info;;
    4) #fun;;
    5) #proc;;
    88) exit;;
    99) shutdown  -h;;
    *) echo "invalid input";;
esac #closes mainmenu case
done #closes while1 loop

Answer 1

只需进行一些更改即可解决您的问题。根据参数设置menuNum，如果没有设置则只询问/读取。

#!/bin/bash
#DEFINE ARGUMENTS
if [[ "$1" = "man" ]]; then man ./manpage.txt; exit; fi #argument "man" opens man page, closes main script
if [ "$1" = "debug" ]
    then clear
    echo -e "This area provides debug information:\n"
    echo -e "There's a lot here, but it's not related to my question."
    echo -e "\nPress [Enter] to continue."
    read
fi


if [ "$1" = "file" -o "$1" = "1" ]; then menuNum=1;
elif [ "$1" = "user" -o "$1" = "2" ]; then menuNum=2;
elif [ "$1" = "info" -o "$1" = "3" ]; then menuNum=3;
elif [ "$1" = "fun" -o "$1" = "4" ]; then menuNum=4;
elif [ "$1" = "process" -o "$1" = "5" ]; then menuNum=5;
else menuNum=0; fi

#/DEFINE ARGUMENTS
clear
echo -e "My script title, contact info, and other stuff gets printed to screen here."
[ $menuNum = 0 ] && read #hitting enter clears welcome screen stuff    

clear
while : #opens while1 loop
do #while1 loop
echo -e "Main Menu\n"
echo -e "[1] File Menu\n[2] User Menu\n[3] Info Menu\n[4] Fun Menu\n[5] Process Menu\n[88] Exit\n[99] Shutdown"
echo -ne "\nEnter Choice: "
[ $menuNum = 0 ] && read menuNum

case $menuNum in #open mainmenu case
    1) #File;; #statement isn't commented, of course, but you get the idea
    2) #user;;
    3) #info;;
    4) #fun;;
    5) #proc;;
    88) exit;;
    99) shutdown  -h;;
    *) echo "invalid input";;
esac #closes mainmenu case
menuNum=0
done #closes while1 loop

bash，shell脚本参数跳过部分脚本

1 个答案: