Bash helper: Add Path

add-path

#!/bin/bash


# Based on: https://dev.to/christianpaez/simplifying-path-management-with-bash-4870
# Install via:
# sudo curl -o /usr/bin/add-path -L https://gist.githubusercontent.com/shawngmc/954ef4ccee03a26f1774c5b922e27777/raw/add-path
# sudo chmod 755 /usr/bin/add-path
unset dir_to_add
unset force_add
unset do_add

usage() { 
    echo "Usage: ${0} [-f] [-p <path>|-c]" 1>&2; 
    echo " -c         : Add current path" 1>&2; 
    echo " -p <path>  : Add specified path" 1>&2; 
    echo " -f         : Force add, even if in current PATH" 1>&2; 
    exit 1; 
}

# Function to add current directory to PATH in .bashrc file
add_dir_to_path() {

    local shell_config=".bashrc"
    local do_add=false

    # Check if the directory is already in PATH
    if [[ ":${PATH}:" == *":${dir_to_add}:"* ]]; then
        echo "${dir_to_add} is already in PATH."
        if [ -z ${force_add} ]; then
            echo "Do you wish to add ${dir_to_add} to .bashrc anyway?"
            select yn in "Yes" "No"; do
                case ${yn} in
                    Yes ) do_add=true; break;;
                    No ) exit;;
                esac
            done
        else
            do_add=true
        fi
    else
        do_add=true
    fi

    if [[ "${do_add}" == true ]]; then
        # Append the current directory to the PATH variable
        echo "export PATH=\$PATH:${dir_to_add}" >> "${HOME}/${shell_config}"
        echo "${dir_to_add} added to PATH in ${shell_config}."
        echo "Remember to execute 'source ${shell_config}' to update the PATH."
    fi
}

while getopts ":p:hcf" o; do
    case "${o}" in
        c)
            echo "Using current directory: $(pwd)"
            export dir_to_add=$(pwd)
            ;;
        p)
            export dir_to_add=${OPTARG}
            ;;
        f)
            export force_add=true
            ;;
        h)
            usage
            ;;
        *)
            usage
            ;;
    esac
done
shift $((OPTIND-1))

echo "${dir_to_add}"
if [ -z "${dir_to_add}" ]; then
    usage
else
    add_dir_to_path
fi