helm/zsh/lib/util

# Check to see if a command exists
function command_exists {
    command -v "$1" &> /dev/null
}

# log to a central logfile (specified by its caller globally)
function do_log {
    printf "[%s] %s: %s" "$(`basename $BASH_SOURCE`)" "`date`" "$1" >> $logfile
}

# Check if a symlink exists before trying to create it
function do_link {
    if [ -e "$2" ]; then
        rm -rf "$2"
    fi
    if [ ! -e "$2" ]; then
        ln -sf "$1" "$2"
    fi
}

# Ask for admin password up front and keep sudo alive until the end of the script
function keep_alive {
    sudo -v
    while true; do sudo -n true; sleep 60; kill -0 "$$" || exit; done 2>/dev/null &
}


# vim:set ft=zsh: