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472
Votes: 1
✅ Solution
Tags:
delete
text
rename
Link:
🔍 See Original Answer on Ask Ubuntu ⧉ 🔗
URL:
https://askubuntu.com/q/1249785
Title:
How to remove text from a folder name after a certain word
ID:
/2020/06/12/How-to-remove-text-from-a-folder-name-after-a-certain-word
Created:
June 12, 2020
Edited: June 13, 2020
Upload:
September 15, 2024
Layout: post
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Here’s the code you need plus some test data you don’t need:
#!/bin/bash
# NAME: truncate-dname
# PATH: $HOME/askubuntu/
# DESC: Answer for: https://askubuntu.com/questions/1249771/how-to-remove-text-from-a-folder-name-after-a-certain-word/1249785#1249785
# DATE: June 12, 2020
echo ============== CREATE TEST DATA ==================
mkdir -p dnames
cd dnames
mkdir -p "Song Band - Song Name download 9038450985934853434"
mkdir -p "Music List download dkjge3j6lk45j45756567"
mkdir -p "Video Chart download 4k645jel43k5yk574yryryrrtyryrryryrt"
ls
echo ============== RENAME DIRECTORIES ================
for old_name in ./*
do
new_name="${old_name% download*}"
mv -v "$old_name" "$new_name"
done
echo ============== DELETE TEST DATA ==================
ls
cd ..
rm -rf dnames
When you run the script you get this:
$ truncate-dname
============== CREATE TEST DATA ==================
Music List download dkjge3j6lk45j45756567
Song Band - Song Name download 9038450985934853434
Video Chart download 4k645jel43k5yk574yryryrrtyryrryryrt
============== RENAME DIRECTORIES ================
'./Music List download dkjge3j6lk45j45756567' -> './Music List'
'./Song Band - Song Name download 9038450985934853434' -> './Song Band - Song Name'
'./Video Chart download 4k645jel43k5yk574yryryrrtyryrryryrt' -> './Video Chart'
============== DELETE TEST DATA ==================
Music List Song Band - Song Name Video Chart
The key operation you want is to extract sub-string within string before a search string. For example:
$ a="Song Band - Song Name download 9038450985934853434"
$ b="${a% download*}"
$ echo $b
Song Band - Song Name
This process is a little tricky if the word “download” appears in the song title so it’s in the filename twice:
$ c="People keep downloading my songs download 9038465489643541"
$ d="${c%% download*}"
$ echo $d
People keep
$ d="${c% download*}"
$ echo $d
People keep downloading my songs
When you have two %% it deletes everything after the first “download” occurrence which you don’t want. So in this case you want to just use a single % so the last “download” is the cut off point.
There is also the # operation which searches in the opposite direction you definitely don’t want:
$ c="People keep downloading my songs download 9038465489643541"
$ e="${c##* download}"
$ echo $e
9038465489643541
$ e="${c#* download}"
$ echo $e
ing my songs download 9038465489643541
Here is a thorough reference.