使 bash 脚本切换到交互模式并给出提示
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Making a bash script switch to interactive mode and give a prompt
提问by ctrl-alt-delor
I am writing a training tool, it is written in bash to teach bash/unix.
我正在编写一个培训工具，它是用 bash 编写的，用于教授 bash/unix。
I want a script to run to set things up, then to hand control to the user.
I want it to be easily runnable by typing ./script-name
我想要一个脚本来运行设置，然后将控制权交给用户。我希望它可以通过键入轻松运行./script-name
How do I do this?
我该怎么做呢？
I.E.
IE
- User types:
tutorial/run - The run-tutorial script sets things up.
- The user is presented with a task. (this bit works)
- The command prompt is returned, with the shell still configured.
- 用户类型：
tutorial/run - 运行教程脚本进行设置。
- 向用户呈现一个任务。（这个位有效）
- 返回命令提示符，仍然配置 shell。
Currently it will work if I type . tutorial/bashrc
目前，如果我输入它会起作用 . tutorial/bashrc
回答by Igor Chubin
There are several options:
有几种选择：
- You start script in the same shell, using
sourceor.; - You start a new shell but with your script as a initialization script:
- 你在同一个 shell 中启动脚本，使用
source或.; - 您启动一个新的 shell，但将您的脚本作为初始化脚本：
The first is obvious; I write a little bit more details about the second.
第一个很明显；我写了关于第二个的更多细节。
For that, you use --init-fileoption:
为此，您使用--init-file选项：
bash --init-file my-init-script
You can even use this option in the shebang line:
您甚至可以在 shebang 行中使用此选项：
#!/bin/bash --init-file
And then you start you script as always:
然后像往常一样启动脚本：
./script-name
Example:
例子：
$ cat ./script-name
#!/bin/bash --init-file
echo Setting session up
PS1='.$ '
A=10
$ ./script-name
Setting session up
.$ echo $A
10
.$ exit
$ echo $A
$
As you can see, the script has made the environment for the user and then has given him the prompt.
如您所见，脚本为用户创建了环境，然后给了他提示。
回答by Gabriel Staples
Try making it an alias in your ~/.bashrc file. Add this to the bottom of ~/.bashrc:
尝试在您的 ~/.bashrc 文件中将其设为别名。将此添加到 ~/.bashrc 的底部：
alias tutorial='. tutorial/bashrc'
Then close and re-open your terminal, or type . ~/.bashrcto re-source it.
然后关闭并重新打开您的终端，或键入. ~/.bashrc以重新获取它。
To use this alias, simply call tutorial, and that will automatically get replaced with its alias, as though you had called . tutorial/bashrc.
要使用此别名，只需调用tutorial，它将自动替换为其别名，就像您调用了. tutorial/bashrc.
