Git Checkout main or master

gcom

#!/bin/bash

# This script checks if the 'main' branch exists in the current Git repository.
# If 'main' exists, it checks out the 'main' branch.
# If 'main' does not exist, it checks out the 'master' branch.

# Check if the 'main' branch exists
# git rev-parse --verify <branch_name> returns 0 if the branch exists, non-zero otherwise.
if git rev-parse --verify main >/dev/null 2>&1; then
    echo "Branch 'main' exists. Checking out 'main'..."
    git checkout main
    if [ $? -eq 0 ]; then
        echo "Successfully checked out 'main'."
    else
        echo "Error checking out 'main'."
        exit 1
    fi
else
    # If 'main' does not exist, check out 'master'
    echo "Branch 'main' does not exist. Checking out 'master'..."
    # Check if 'master' branch exists before attempting to checkout
    if git rev-parse --verify master >/dev/null 2>&1; then
        git checkout master
        if [ $? -eq 0 ]; then
            echo "Successfully checked out 'master'."
        else
            echo "Error checking out 'master'."
            exit 1
        fi
    else
        echo "Neither 'main' nor 'master' branches exist in this repository."
        exit 1
    fi
fi

exit 0