In today’s chautauqua…

  • 0 Posts
  • 11 Comments
Joined 3 months ago
Cake day: September 15th, 2025
  • phaedrus@piefed.worldtoLinux@lemmy.ml•Bash scripting questionEnglish
    1·
    16 hours ago

    Indeed, folks tend not to look into the docs enough to realize find is a powerful tool on its own!

    I think the other answers were just adhering to the request (trying to troubleshoot the script as is), but I generally go for pragmatism despite not being what was actually requested.

  • phaedrus@piefed.worldtoLinux@lemmy.ml•Bash scripting questionEnglish
    5·
    1 day ago

    It might be instance related, I’m on PieFed, so perhaps the markdown implementation is different.

    Also, I realized that the parameter expansion might not be straightforward and added the GNU docs on it, but looks like you found a post about it at the same time! Glad to hear it got you sorted out.

  • phaedrus@piefed.worldtoLinux@lemmy.ml•Bash scripting questionEnglish
    391·
    1 day ago

    You can do the entire thing as a one-liner using only find:

    find ./ -type f \( -iname "*.jpg" -or -iname "*.png" \) -exec sh -c 'mv "$0" "$(uuidgen -r).${0##*.}"' {} \;

    Test on my machine:

    phaedrus@sys76 ~/D/test> ls -lh  
total 0  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 test1.jpg  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 test1.png  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 test2.jpg  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 test2.png  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 test3.jpg  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 test3.png  
phaedrus@sys76 ~/D/test> find ./ -type f \( -iname "*.jpg" -or -iname "*.png" \) -exec sh -c 'mv "$0" "$(uuidgen -r).${0##*.}"' {} \;  
phaedrus@sys76 ~/D/test> ls -lh  
total 0  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 062d8954-9921-42bd-ad24-0e4ed403a5db.jpg  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 111f859f-b1fe-4488-b2bc-75585320e3a3.png  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 39b9fe4e-7a05-43c9-b30a-69e9a13aa3a9.png  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 57bda91e-49e5-43fe-8318-aeeb2e3adde7.png  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 97398eb7-54aa-488f-8fbe-0b84b5e5a50d.jpg  
-rw-r--r-- 1 phaedrus users 0 Dec  6 01:08 f7a13274-e2c0-4fa7-9907-c590d1280c2e.jpg

    btw, Lemmy doesn’t like language specifiers in the multi-line code blocks, so it’s difficult to read all that in its current form since there are no tabs to know how you have it formatted. Makes it virtually impossible to troubleshoot your specific script.

    edit: further reading on the ever useful variable expansions (${0##*.} portion of my one-liner):
    https://www.gnu.org/software/bash/manual/html_node/Shell-Parameter-Expansion.html