Git: How to do pre-commit

• STEP1: Find .git/hooks
• STEP2: Create pre-commit file
• STEP3: edit pre-commit file

STEP1: Find .git/hooks

Find the hooks folder in the (hidden) .git configuration folder

cd .git/hooks

STEP2: Create pre-commit file

touch pre-commit

STEP3: edit pre-commit file

vi pre-commit

and add something like this:

#!/bin/bash

# store the top level git repository path
root_directory=$(git rev-parse --show-toplevel)

# list all subdirectories
subdirectories=("HW1", "HW2", "HW3")

# iterate over each subdirectory
for subdir in "$(subdirectories[@])";
do
    (cd "$root_directory/$subdir" && make clean)
done

# Continue with the commit
exit 0

Now whenever you commit, it will automatically clean the subdirectory and will not commit any executable files. Note, if the operating system changes, the script will also need to change.