Issue
How do I write a bash script that goes through each directory inside a parent_directory and executes a command in each directory.
The directory structure is as follows:
parent_directory (name could be anything - doesnt follow a pattern)
- 001 (directory names follow this pattern)
- 0001.txt (filenames follow this pattern)
- 0002.txt
- 0003.txt
- 002
- 0001.txt
- 0002.txt
- 0003.txt
- 0004.txt
- 003
- 0001.txt
the number of directories is unknown.
Solution
You can do the following, when your current directory is parent_directory:
for d in [0-9][0-9][0-9]
do
( cd "$d" && your-command-here )
done
The ( and ) create a subshell, so the current directory isn't changed in the main script.
Answered By - Mark Longair