在linux中使用循环更改目录

问题描述

我想更改目录以在每个目录中执行任务.代码如下:

I want to change directory to perform a task in each directory. Following is the code:

for i in {1..10}
do
cd dir/subdir$i
bla... bla.. bla..
done

但是我收到错误:

 not found [No such file or directory]

我尝试了以下方法，但仍然出现上述错误:

I have tried the following but still getting the same above error:

cd $(echo dir/subdir"$i")
cd $(eval dir/subdir"$i")

推荐答案

问题可能是因为您要更改的所有目录都是相对于原始基目录的.解决此问题的一种方法是使用 (...) 子外壳:

The problem is probably because all the directories you want to change into are relative from the original base directory.One way to solve this is using a (...) sub-shell:

for i in {1..10}; do
    (
    cd dir/subdir$i || continue
    cmd1
    cmd2
    )
done

另一种方法是使用cd "$OLDPWD"返回上一个目录:

Another way is to return to the previous directory using cd "$OLDPWD":

for i in {1..10}; do
    cd dir/subdir$i || continue
    cmd1
    cmd2
    cd "$OLDPWD"
done

另一种方法是使用 pushd 和 popd:

Yet another way is to use pushd and popd:

for i in {1..10}; do
    pushd dir/subdir$i || continue
    cmd1
    cmd2
    popd
done

这篇关于在linux中使用循环更改目录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！