用于自动创建指向树中子目录的符号链接的 Bash 脚本
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Bash script to automatically create symlinks to subdirectories in a tree
提问by NWCoder
Ok, this is my third try posting this, maybe I'm asking the wrong question!!
好的，这是我第三次尝试发帖，也许我问错了问题！！
It's been a few years since I've done any shell programming so I'm a bit rusty...
我已经有几年没有做过任何 shell 编程了，所以我有点生疏了......
I'm trying to create a simple shell script that finds all subdirectories under a certain named subdirectory in a tree and creates symbolic links to those directories (sounds more confusing than it is). I'm using cygwin on Windows XP.
我正在尝试创建一个简单的 shell 脚本，该脚本在树中的某个命名子目录下查找所有子目录，并创建到这些目录的符号链接（听起来比实际更混乱）。我在 Windows XP 上使用 cygwin。
This find/grep command finds the directories in the filesystem like I want it to:
这个 find/grep 命令像我想要的那样在文件系统中查找目录：
find -mindepth 3 -maxdepth 3 -type d | grep "New Parts"
Now for the hard part... I just want to take that list, pipe it into ln and create some symlinks. The list of directories has some whitespace, so I was trying to use xargs to clean things up a bit:
现在是困难的部分...我只想获取该列表，将其通过管道传输到 ln 并创建一些符号链接。目录列表有一些空格，所以我试图使用 xargs 来清理一下：
find -mindepth 3 -maxdepth 3 -type d | grep "New Parts" | xargs -0 ln -s -t /cygdrive/c/Views
Unfortunately, ln spits out a long list of all the directories concatenated together (seperated by \n) and spits out a "File name too long" error.
不幸的是， ln 吐出一长串所有连接在一起的目录（由 \n 分隔）并吐出“文件名太长”错误。
Ideas??
想法？？
回答by NWCoder
I think you can do this all within your find command. OTTOMH:
我认为你可以在你的 find 命令中完成这一切。奥托姆：
find -mindepth 3 -maxdepth 3 -type d -name "*New Parts*" -exec ln -s -t /cygdrive/c/Views {} \;
Hope I remembered that syntax right.
希望我记得那个语法是对的。
回答by hlovdal
your command
你的命令
find -mindepth 3 -maxdepth 3 -type d | grep "New Parts" | xargs -0 ln -s -t /cygdrive/c/Views
have argument "-0" to xargs but you did not tell find to "-print0" (if you did grep could not work in the pipe inbetween). What you want is the following I guess:
有参数“-0”到 xargs 但你没有告诉 find 到“-print0”（如果你做了 grep 无法在中间的管道中工作）。我想你想要的是以下内容：
find -mindepth 3 -maxdepth 3 -type d | grep "New Parts" | tr '2' 'for name in $(find $from_dir -mindepth 3 -maxdepth 3 -type d); do
ln -s $name $to_dir
done
0' | xargs -0 ln -s -t /cygdrive/c/Views
The trcommand will convert newlines to ascii null.
该tr命令会将换行符转换为 ascii null。
回答by KFro
Use a for loop.
使用 for 循环。
##代码##Xargs has issues where the input from the pipe goes at the end of the command. What you want is multiple commands, not just 1 command.
Xargs 存在来自管道的输入在命令末尾的问题。您想要的是多个命令，而不仅仅是 1 个命令。
My experience with doing things within the find command can sometimes be slow, although it does get the job done.
我在 find 命令中做事的经验有时会很慢，尽管它确实完成了工作。
