CODEWITHSUNDEEP
linuxbashgnu-screenrc
Sofus Øvretveit
Sofus Øvretveit

Reputation: 363

Screen not starting from rc.local

I have a problem where I am unable to start a screen session at boot using the rc.local file. The specific screen I am starting is for a spigot minecraft server.

This is my rc.local file:

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

/home/pi/Documents/bootlog.sh
/home/spigot1_12/startspigot.sh
exit 0

This is the startspigot.sh script (with chmod u+x):

#!/bin/bash

cd /home/spigot1_12

boot=$(date)

echo "Starting spigot server in screen \"minecraft\" @  $boot " >> /home/pi/Documents/minecraftlog


screen -S minecraft java -Xms512M -Xmx1008M -jar /home/spigot1_12/spigot-1.12.jar nogui

The minecraftlog file does update at each boot, so the script is run.

When I run the command "sudo sh startspigot.sh", everything works perfectly. The screen is started and the minecraftlog file is updated. I can find the screen again with "sudo screen -ls"

At boot, however, both "sudo screen -ls" and "screen -ls" return no sockets.

What can be causing this? The only two users are "pi" and root.

Thanks in advance!

Upvotes: 3

Views: 5758

Answers (2)

DaWe
DaWe

Reputation: 1702

Starting a script in a new detached screen as current user (rc.local = root):

screen -dmS <session name> <command>, example:

screen -dmS screenName bash /home/user/run.sh

Starting a script from rc.local as user:

runuser -l user -c 'screen -dmS screenName bash /home/user/run.sh'

Upvotes: 5

Tamar
Tamar

Reputation: 679

Running screen in detached mode (when you do not have active terminal, like in rc.local or crontab):

screen -dm -S <session name> <command>

-d -m Start screen in "detached" mode

-S When creating a new session, this option can be used to specify a meaningful name for the session.

Upvotes: 3

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