How to rename multiple file extensions to nil/no file extension at once in Windows? (lemmy.ml)

submitted 1 year ago* (last edited 1 year ago) by Squa64res@lemmy.ml to c/asklemmy@lemmy.ml

36 comments fedilink hide all child comments

In case of renaming multiple file extensions to another, they suggested to type this command in cmd promt or powershell: ren *.(current extension name) *.(new extension name)

But what about to renaming multiple file extensions to nil or no file extension? How to replace this command *.(new extension name) ?

you are viewing a single comment's thread
view the rest of the comments

[-] SpaceNoodle@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

Set up WSL
for file in * ; do mv "$file" $(basename "$file") ; done

Edit: the other commenter is right, I fucked up the usage of basename.

[-] FooBarrington@lemmy.world 3 points 1 year ago

No, that doesn't work, you have to pass the suffix you want to remove to basename:

$ touch test.txt
$ basename test.txt
test.txt
$ basename test.txt .txt
test

[-] hddsx@lemmy.ca 0 points 1 year ago* (last edited 1 year ago)

newfile=$(echo $file|sed ‘s/..*//‘)

[-] federalreverse@feddit.de 2 points 1 year ago* (last edited 1 year ago)

That's a bit dangerous for a few reasons:

cat is the wrong command, because it outputs the file's content, not the file's name.
my.awesome.file.txt would become an empty string, leading to errors. (The regex is not anchored to the end of the string ($), the . is not escaped, so it becomes a wild card, ...)
My awesome file.txt would trip up the loop and lead to unwanted results.

I'd suggest this:

for file in * ; do mv “$file” $(echo “$file” | sed -r 's/(\.tar)?\.[^.]*$//') ; done

[-] SpaceNoodle@lemmy.world 1 points 1 year ago* (last edited 1 year ago)

Wow, cat and sed, double unnecessary and extra wrong.

this post was submitted on 16 Sep 2023

38 points (95.2% liked)

Asklemmy

43895 readers

1242 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy 🔍

If your post meets the following criteria, it's welcome here!

Open-ended question
Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
Not ad nauseam inducing: please make sure it is a question that would be new to most members
An actual topic of discussion

Looking for support?

Looking for a community?

Lemmyverse: community search
sub.rehab: maps old subreddits to fediverse options, marks official as such
!lemmy411@lemmy.ca: a community for finding communities

~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~

founded 5 years ago

MODERATORS