Question

我有一个名为installer.txt的文件，其中包含一行一行的.tar.gz文件，如：

http://oscargodson.com/projects/example1.tar.gz
http://oscargodson.com/projects/anotherexample.tar.gz
http://oscargodson.com/projects/onemore.tar.gz

我试过了：

#!/bin/bash
file = `cat installs.txt`
for word in file; do
  echo $word
done

但我的输出如下：

Oscars-MacBook-Air:Desktop oscargodson$ ./test.sh
=:                                                     cannot open `=' (No such file or directory)
http://oscargodson.com/projects/example1.tar.gz:       cannot open `http://oscargodson.com/projects/example1.tar.gz' (No such file or directory)
http://oscargodson.com/projects/anotherexample.tar.gz: cannot open `http://oscargodson.com/projects/anotherexample.tar.gz' (No such file or directory)
http://oscargodson.com/projects/onemore.tar.gz:        cannot open `http://oscargodson.com/projects/onemore.tar.gz' (No such file or directory)
file

它应该输出每一行，或者，我想。想法？

Answer 1

您的错误实际上是由赋值语句生成的。你的作业周围不能有空格。总是引用rhs的好习惯。所以你想要的是

#!/bin/bash -u
file="$(cat installs.txt)"
for word in $file; do
  echo $word
done

我还将你改回$( )，因为这是推荐的方式，我觉得它也更容易阅读

在BASH中逐行循环文件内容

1 个答案: