删除whitspace，并将小写字母改为连字符-文件名 [英] Strip whitspace and make lower case up to hyphen - filename

问题描述

我有很多文本文件，我正在使用特定格式重命名.在下面，我能够删除空格并使小写.但是，这不是理想的结果.

I have a lot of text files which I am renaming with a specific format. Below I am able to remove whitespaces and make lower case. However, it is not the desired outcome.

我怎样才能格式化(删除空格并使其小写)连字符中的所有内容，然后仅在连字符之后占用第一个空白?

How would I be able to format(take out spaces and make lower case) everything up the hyphen and then take only the first white space after the hyphen?

find /temp/ -depth -name "* *" -type f -exec rename 's/ +\././; y/A-Z /a-z_/' {} +

输入结果:

Hello Video - KEEP.txt

输出:

hello_video_-_keep.txt

所需结果:

hello_video_-KEEP.txt

推荐答案

如果它是文件，我将使用:

If it was a file I would use:

sed -re 's/^([^-]*)-\s*([^\.]*)/\L\1-\U\2/' -e 's/ /_/g' file

• s/^([^-]*)-\s*([^\.]*)/\L\1-\U\2/将从文件开头到连字符-的所有内容转换为小写形式.然后将其转换为大写字母，直到点为止.
• s/ /_/g将所有空格转换为下划线_.
• s/^([^-]*)-\s*([^\.]*)/\L\1-\U\2/ converts to lowercase everything from the beginning of the file up to a dash -. Then it converts to uppercase up to the dot.
• s/ /_/g converts all spaces into underscores _.

对于给定的文本，它返回:

For your given text it returns:

hello_video_-KEEP.txt

---

如果要保留从-到.的单词，请使用\E恢复大小写.然后，我们也可以通过将多余的_-替换为-(我知道这有点难看)来摆脱它.

---

If you want to keep the word as it is from the - up to ., use \E to restore the case. Then, we can also get rid of the superfluous _- by replacing it to just - (a bit ugly, I know).

$ cat file
Hello Video - KEEP.txt
My File - KeEp.txt
$ sed -re 's/^([^-]*)-\s*([^\.]*)/\L\1\E-\2/' -e 's/ /_/g' -e 's/_-/-/g' file
hello_video-KEEP.txt
my_file-KeEp.txt

提醒一下，这些是更改大小写的方法:

As a reminder, these are the ways to change the upper/lower case:

• \L-将所有后续字符转换为小写
• \U-将所有后续字符转换为大写
• \E-在当前情况下保留所有后续字符
• \L - convert all proceeding characters to lowercase
• \U - convert all proceeding characters to uppercase
• \E - leave all proceeding characters in their current case

您如何标记它有效?循环浏览find命令的结果:

How can you mark it work? Loop through the results of the find command:

while read -r file
do
   new_file=$(echo "$file" | sed -re 's/^([^-]*)-\s*([^\.]*)/\L\1\E-\2/' -e 's/ /_/g' -e 's/_-/-/g')
   echo "mv '$file' '$new_file'"
done < <(find . -type f ...)

对于给定的输入，这将产生以下内容:

For the given input this will produce this content:

mv './My File - KeEp.txt' './my_file-KeEp.txt'
mv './Hello Video - KEEP.txt' './hello_video-KEEP.txt'

一旦确定它可以工作，只需删除echo并单独使用mv.注意引号是必须的！否则，它将无法正确处理文件名中的空格.

once you are sure it works, just remove the echo and use mv alone. Note the quotes are necessary!! Otherwise it won't handle properly the spaces in the file names.

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