Shell function for installing the scripts

install_scripts.sh

# include this in your .bashrc or .zshrc if you want to enable command output for install_scripts
# INSTALL_SCRIPTS_DEBUG=1

function _install_scripts_debug {
    [[ $INSTALL_SCRIPTS_DEBUG -eq 1 ]] && echo $@
}

function install_scripts {
    INSTALL_SCRIPTS_VERSION="20"
    # define configuration
    GIST_USER="henderea"
    LIST_URL="https://gist.githubusercontent.com/henderea/48d131bf9d3773c2057a2a171eb7f87d/raw/scripts.txt"
    DT="?rand=$(date +%s)"
    INSTALL_SCRIPTS_URL="https://gist.githubusercontent.com/henderea/98aebdafe6ddb030d1de61d47c4b87ef/raw/install_scripts.sh"
    INSTALL_SCRIPTS_LOC="$HOME/.install_scripts.sh"
    # main script
    case "$1" in 
        upgrade)
            echo "Downloading latest script"
            _install_scripts_debug "> curl -SL --progress-bar $INSTALL_SCRIPTS_URL$DT -o $INSTALL_SCRIPTS_LOC"
            curl -SL --progress-bar $INSTALL_SCRIPTS_URL$DT -o $INSTALL_SCRIPTS_LOC

            _install_scripts_debug "> install_scripts reload"
            install_scripts reload ">"
            _install_scripts_debug "> install_scripts version"
            install_scripts version
            ;;
        reload)
            echo "Reloading install_scripts shell integration"
            _install_scripts_debug "$2> source $INSTALL_SCRIPTS_LOC"
            source $INSTALL_SCRIPTS_LOC
            ;;
        version)
            echo "install_scripts is at version $INSTALL_SCRIPTS_VERSION"
            ;;
        settings)
            cat << EOM
INSTALL_SCRIPTS_VERSION = $INSTALL_SCRIPTS_VERSION
GIST_USER               = $GIST_USER
LIST_URL                = $LIST_URL
INSTALL_SCRIPTS_URL     = $INSTALL_SCRIPTS_URL
INSTALL_SCRIPTS_LOC     = $INSTALL_SCRIPTS_LOC
EOM
            ;;
        -h | --help | help)
            cat << EOM
install_scripts v$INSTALL_SCRIPTS_VERSION
Usage: install_scripts [command]
Without any argument, it offers the scripts you can download.

commands:
    -h, --help, help    Print this help message
    upgrade             Upgrade the install_scripts function
    reload              Reload the install_scripts function
    version             Print the currently loaded version of install_scripts
    settings            Print the (hardcoded) script settings
    install             Show the available scripts and let you install the ones you want
    update              Update any of the scripts already installed to the latest version
EOM
            ;;
        update)
            LIST_DATA=`curl -sSL $LIST_URL`
            selections=$(command ls ~/bin | tr '\n' '|')
            echo $LIST_DATA | awk -v selects="$selections" -v gistuser="$GIST_USER" -v vbose="$INSTALL_SCRIPTS_DEBUG" -v qstr="$DT" '{ split(selects, sels,"|"); for(s in sels) { if(sels[s] == $2) { print "Downloading",$2,"to ~/bin/"$2,"and marking as executable" ; if(vbose == 1) { print "> curl -SL --progress-bar https://gist.githubusercontent.com/"gistuser"/"$1"/raw/"$2qstr" -o ~/bin/"$2" && chmod +x ~/bin/"$2; } system("curl -SL --progress-bar https://gist.githubusercontent.com/"gistuser"/"$1"/raw/"$2qstr" -o ~/bin/"$2" && chmod +x ~/bin/"$2) } } }'
            ;;
        install | *)
            LIST_DATA=`curl -sSL $LIST_URL`
            echo 'Here are the available scripts:'
            echo $LIST_DATA | awk '{ print NR")",$2; }'
            echo -e "Please enter your desired selections, separated by spaces: \c "
            read selections
            echo $LIST_DATA | awk -v selects="$selections" -v gistuser="$GIST_USER" -v vbose="$INSTALL_SCRIPTS_DEBUG" -v qstr="$DT" '{ split(selects, sels); for(s in sels) { if(sels[s] == NR) { print "Downloading",$2,"to ~/bin/"$2,"and marking as executable" ; if(vbose == 1) { print "> curl -SL --progress-bar https://gist.githubusercontent.com/"gistuser"/"$1"/raw/"$2qstr" -o ~/bin/"$2" && chmod +x ~/bin/"$2; } system("curl -SL --progress-bar https://gist.githubusercontent.com/"gistuser"/"$1"/raw/"$2qstr" -o ~/bin/"$2" && chmod +x ~/bin/"$2) } } }'
            ;;
    esac
}

Download with:

curl -sSL https://gist.githubusercontent.com/henderea/98aebdafe6ddb030d1de61d47c4b87ef/raw/install_scripts.sh -o ~/.install_scripts.sh

Add this to your ~/.bashrc or ~/.zshrc to enable:

[[ -s "$HOME/.install_scripts.sh" ]] && source "$HOME/.install_scripts.sh" # Load the install_scripts function

To get it in your current session after first download, run:

source ~/.install_scripts.sh

And upgrade with this command:

install_scripts upgrade

Reload the shell function with:

install_scripts reload