#! /bin/zsh
#
# this file:
#   http://user.it.uu.se/~embe8573/conf/.zsh/distro
#   https://dataswamp.org/~incal/conf/.zsh/distro

services () {
    local state=${1:-enabled}
    systemctl list-unit-files \
              --full          \
              --no-legend     \
              --state=$state  \
              --type=service  | awk '{ print $1 }'
}

services-disabled () {
    services disabled
}

services-do-to () {
    local do=$1
    shift
    local to=($@)
    sudo systemctl $do $to
}

services-start-all () {
    local -a to
    to=("${(@f)$(services disabled)}")

    services-do-to start $to
}

services-enable-all () {
    local -a to
    to=("${(@f)$(services disabled)}")

    services-do-to enable $to
}

services-disable-all () {
    local -a to
    to=("${(@f)$(services enabled)}")

    services-do-to disable $to

    # exceptions
    sudo systemctl enable       \
         'getty@.service'       \
         console-setup.service  \
         keyboard-setup.service \
         ntp.service
}

version () {
    uname -a
    echo

    lsb_release -a
    echo

    grep Revision /proc/cpuinfo
    echo

    local os_file=/etc/os-release
    [[ -f $os_file ]] && cat $os_file
}
alias ver=version