将/ Volumes的所有子目录存储在一个数组（BASH）中(Store all subdirectories of /Volumes in an array (BASH))

将/ Volumes的所有子目录存储在一个数组（BASH）中(Store all subdirectories of /Volumes in an array (BASH))

我需要一个脚本来获取Mac上/ Volumes目录中的所有目录并将它们存储在一个数组中。 我遇到的问题是，在目录名中有一个空格是很常见的，这真的让人感到困惑。 这是我到目前为止所得到的：

LOCATION="/Volumes" COUNTER=0 cd $LOCATION OIFS=$IFS IFS=$'\n' for folder in *; do [ -d "$folder" ] || continue (( DRIVES[$COUNTER] = ${folder} )) (( COUNTER = COUNTER + 1 )) done IFS=$OIFS

这是我得到的错误：

./getDrives.sh: line 17: DRIVES[0] = Macintosh HD : syntax error in expression (error token is "HD ")

I need a script that will get all of the directories within the /Volumes directory on a Mac and store them in an array. The problem that I am running into is that it is very common for there to be a space in a directory name, and that really messes things up. Here is what I've got so far:

LOCATION="/Volumes" COUNTER=0 cd $LOCATION OIFS=$IFS IFS=$'\n' for folder in *; do [ -d "$folder" ] || continue (( DRIVES[$COUNTER] = ${folder} )) (( COUNTER = COUNTER + 1 )) done IFS=$OIFS

Here is the error that I am getting:

./getDrives.sh: line 17: DRIVES[0] = Macintosh HD : syntax error in expression (error token is "HD ")

最满意答案

我想最简单的只是：

array=( /Volumes/*/ )

笔记：

将此与nullglob或failglob集一起使用 如果你也想要隐藏目录（但不是.也不.. ），请设置dotglob

如果你想要所有的目录和子目录（递归），设置globstar并使用

array=( /Volumes/**/ )

代替。

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当我说set nullglob或failglob或dotglob或globstar我指的是shell选项，可以设置，例如：

shopt -s nullglob

并且未设置，例如：

shopt -u nullglob

有关这些内容的更多信息，请参阅Bash参考手册的Shopt Builtin部分 。

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要回答你的评论：你只想要目录的基名，而不是完整的路径？ 简单，只是做

cd /Volumes array=( */ )

就这样。 事实上，我建议你用一条效率更高的代码替换6行低效代码。

更一般地说，如果你不想进入/Volumes ，你可以很容易地摆脱领先/Volumes/ like

array=( /Volumes/*/ ) array=( "${array[@]/#\/Volumes\//}" )

或者，更好的是，将前导/Volumes/置于变量中并继续：

location="/Volumes/" array=( "$location"* ) array=( "${array[@]/#"$location"/}" )

I guess the simplest is just:

array=( /Volumes/*/ )

Notes:

use this with nullglob or failglob set if you also want hidden directories (but not . nor ..), set dotglob

if you want all the directories and subdirectories (recursively), set globstar and use

array=( /Volumes/**/ )

instead.

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When I say set nullglob or failglob or dotglob or globstar I mean the shell options, that can be set with, e.g.:

shopt -s nullglob

and unset with, e.g.:

shopt -u nullglob

More about these in The Shopt Builtin section of the Bash Reference Manual.

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To answer your comment: you only want the basename of the directories, not the full path? easy, just do

cd /Volumes array=( */ )

That's all. In fact, I'm suggesting you replace 6 lines of inefficient code with just one, much more efficient, line.

More generally, if you don't want to cd into /Volumes, you can easily get rid of the leading /Volumes/ like so

array=( /Volumes/*/ ) array=( "${array[@]/#\/Volumes\//}" )

Or, even better, put the leading /Volumes/ in a variable and proceed as:

location="/Volumes/" array=( "$location"* ) array=( "${array[@]/#"$location"/}" )