How to go to each directory and execute a command?

This answer posted by Todd helped me.

find . -maxdepth 1 -type d \( ! -name . \) -exec bash -c "cd '{}' && pwd" \;

The \( ! -name . \) avoids executing the command in current directory.

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.

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