Luk ned dagligt

Source: Download script

Last Updated: 4. December 2024 by Agnete Moos (agms@sonderborg.dk)

Parameters:

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Click to see the source code

#!/usr/bin/env bash

# SYNOPSIS
#    shutdown_at_time.sh 
#
# DESCRIPTION
#    This is a script to make a OS2BorgerPC machine shutdown at a certain time.
#
#    To disable the scheduled shutdown:
#      shutdown_at_time.sh --off
#
#    We'll suppose the user only wants to have regular shutdown once a day
#    as specified by the and  parameters. Thus, any line in
#    crontab already specifying a shutdown will be deleted before a new one is
#    inserted.
#
# IMPLEMENTATION
#    author          Danni Als
#    copyright       Copyright 2018, Magenta Aps"
#    license         GNU General Public License

set -x

WAKE_PLAN_FILE=/etc/os2borgerpc/plan.json

if [ -f $WAKE_PLAN_FILE ]; then
  echo "Dette script kan ikke anvendes på en PC, der er tilknyttet en tænd/sluk tidsplan."
  exit 1
fi

ROOTCRON_TMP=/tmp/oldcron
USERCRON=/etc/os2borgerpc/usercron
if grep "LANG=" /etc/default/locale | grep "sv"; then
  MESSAGE="Den här datorn stängs av om fem minuter"
elif grep "LANG=" /etc/default/locale | grep "en"; then
  MESSAGE="This computer will shut down in five minutes"
else
  MESSAGE="Denne computer lukker ned om fem minutter"
fi

# Read and save current cron settings first
crontab -l > $ROOTCRON_TMP

# Ensure that the usercron-file exists and has the correct permissions
touch $USERCRON
chmod 700 $USERCRON

# Delete current crontab entries related to this script AND shutdown_and_wakeup.sh
sed --in-place --expression "/shutdown/d" --expression "/rtcwake/d" --expression "/scheduled_off/d" $ROOTCRON_TMP
sed --in-place "/notify-send/d" $USERCRON

# If not called with --off: Determine the new crontab contents
if [ "$1" != "--off" ]; then

    if [ $# == 2 ]; then
        HOURS=$1
        MINUTES=$2
        # Assume the parameters are already validated as integers.
        echo "$MINUTES $HOURS * * * /sbin/shutdown -P now" >> $ROOTCRON_TMP

        MINM5P60=$(( $(( MINUTES - 5)) + 60))
        # Rounding minutes
        MINS=$(( MINM5P60 % 60))
        HRCORR=$(( 1 - $(( MINM5P60 / 60))))
        HRS=$(( HOURS - HRCORR))
        HRS=$(( $(( HRS + 24)) % 24))
        # Now output to user's crontab as well
        echo "$MINS $HRS * * * XDG_RUNTIME_DIR=/run/user/\$(id -u) /usr/bin/notify-send \"$MESSAGE\"" >> $USERCRON
    else
        echo "Usage: shutdown_at_time.sh [--off] [hours minutes]"
    fi
fi

# Update crontabs accordingly - either with an empty crontab or updated ones
crontab $ROOTCRON_TMP
crontab -u user $USERCRON

# Ensure that user-cleanup resets the user crontab
if [ -f "$USER_CLEANUP" ] && ! grep --quiet "crontab" "$USER_CLEANUP"; then
  echo "crontab -u user $USERCRON" >> "$USER_CLEANUP"
fi

rm --force $ROOTCRON_TMP

Beskrivelse

Lukker computeren ned på et bestemt tidspunkt hver dag. Brugeren varsles fem minutter før nedlukningen.

NB: Brugeren har ingen mulighed for at undgå nedlukning.

Dette script er blevet testet og virker på Ubuntu 22.04.

Parametre

1. Aktiver: Sæt hak for at aktiverer automatisk nedlukning. Lad stå tom for at stoppe automatisk nedlukning.
2. Timer: Angiver hvilket timetal computeren lukker ned.
3. Minutter: Angiver hvilket minuttal computeren lukker ned.

Eksempel: Hvis du i timer og minutter angiver henholdsvis “20” og “30”, så vil maskinen dagligt lukke ned kl. 20:30.