git 如何在 Shell 脚本中更改目录？
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How to change directory in a Shell Script?
提问by Ron van der Heijden
This is my first time I create a Shell Script.
这是我第一次创建 Shell 脚本。
At the moment I'm working with nodejs and I am trying to create a Shell Script and use git in it.
目前我正在使用 nodejs，我正在尝试创建一个 Shell 脚本并在其中使用 git。
What my script looks like
我的脚本是什么样的
#!/bin/bash
git clone git://github.com/Tmeister/Nodejs---Boilerplate.git site
This script is located at my desktop and it works (yes I have git installed).
这个脚本位于我的桌面上并且它可以工作（是的，我已经安装了 git）。
What I want
我想要的是
After it downloaded the git repository, I want to:
下载 git 存储库后，我想：
cd /site
npm install
I have Nodejs and NPM installed.
我安装了 Nodejs 和 NPM。
What I tried
我试过的
I just want to dive into the created folder and run the command npm installso I thought to do this:
我只想进入创建的文件夹并运行命令，npm install所以我想这样做：
#!/bin/bash
git clone git://github.com/Tmeister/Nodejs---Boilerplate.git site
echo "cd /site"
echo "npm install"
Also I've read about the aliasand I tried
我也读过别名，我试过
#!/bin/bash
git clone git://github.com/Tmeister/Nodejs---Boilerplate.git site
alias proj="cd /site"
proj
echo "npm install"
But nothing works..
但没有任何作用..
Anyone who can help me?
谁能帮助我？
回答by miku
It might be simpler than you think (since you are writing bash (or whatever shell you use) 'scripts' all time, just by using the command line):
它可能比您想象的更简单（因为您一直在编写 bash（或您使用的任何 shell）“脚本”，只需使用命令行即可）：
#!/bin/bash
git clone git://github.com/Tmeister/Nodejs---Boilerplate.git site
cd site
npm install
cd - # back to the previous directory
To make it a bit more robust, only run npmif cd sitesucceeds (more on that in Chaining commands together):
为了让它更健壮一点，只有npm在cd site成功时才运行（更多关于链接命令中的内容）：
git clone git://github.com/Tmeister/Nodejs---Boilerplate.git site
cd site && npm install && cd -
Just because I read some article about reliable bash, here's yet another version:
仅仅因为我读了一些关于可靠 bash 的文章，这里还有另一个版本：
#!/bin/bash
OLDPWD=$(pwd)
git clone git://github.com/Tmeister/Nodejs---Boilerplate.git site \
&& cd site && npm install && cd "$OLDPWD"
function atexit() {?cd "$OLDPWD"; }
trap atexit EXIT # go back to where we came from, however we exit
