脚本找不到文件 [英] Script cannot find file

问题描述

我正在尝试在Mac/Linux机器上运行名为 myscript.command 的脚本.

I am trying to run a script named myscript.command on a Mac/Linux machine.

#!/bin/sh
echo 'Starting'
chmod 777 ./myfile

问题在于，当我进入 chmod 部分时，会得到以下输出:

The problem is that when I get to the chmod part I get this output:

chmod ./myfile: No such file or directory

但是 myscript.command 和 myfile 都在同一文件夹中.

But both myscript.command and the myfile are in the same folder.

编辑

似乎我启动脚本时，脚本的位置未保留.如何保存位置?

It seems that when I launch the script the script's location is not being preserved. How can I preserve the location?

通过在用户界面中双击启动脚本.

The script is being launched via double click in the UI.

推荐答案

$ 0

为了将当前工作目录更改为脚本目录，请在shebang行之后放置以下命令:

In order to change the current working directory to the script's directory, put the following command right after the shebang line:

cd "$(dirname "$0")"

$ 0 变量扩展为脚本名称(脚本的路径)，而 dirname 返回脚本目录的路径.

The $0 variable expands to the script name (path to the script), and dirname returns path to the script's directory.

检测当前工作目录

您可以使用 pwd 命令获取当前的工作目录.如果您实际上正在运行Bash(我不确定，因为代码中的shebang指向/bin/sh )，则可以使用内置的 $ PWD 变量:

You can use pwd command to get the current working directory. If you are actually running Bash (I'm not sure, since the shebang in your code points to /bin/sh), you can use the built-in $PWD variable:

PWD 内置 cd 设置的当前工作目录.

PWD The current working directory as set by the cd builtin.

将脚本的路径存储到变量中

或者，将目录路径保存到变量中，然后在脚本中使用它，例如:

Alternatively, save the directory path into a variable, and use it in the script, e.g.:

dir="$(cd $(dirname "$0"); pwd)"
chmod 770 "$dir/somefile"

双引号

请注意使用双引号.双引号可防止重新解释特殊字符.这也是将包含空格的字符串作为单个单词传递的方法:

Note the use of double quotes. Double quotes prevent reinterpretation of special characters. It is also the way to pass strings containing spaces as a single word:

dir="some directory name"
cd "$dir"

不带双引号的单词将被解释为单独的参数.

Without double quotes the words are interpreted as separate arguments.

这篇关于脚本找不到文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！