- modify file
/etc/modprobe.d/blacklist.conf, append line with blow
blacklist snd_hda_codec_hdmi
- Done.
[……]
Disable HDMI Speaker on Ubuntu
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Configure iptables to forward subnets data on Linux
- source:
192.168.1.0/24 - destination:
172.16.1.0/24 - policy:
SNAT
iptables -A FORWARD -s 192.168.1.0/24 -d 172.16.1.1/24 -j ACCEPT
iptables -A FORWARD -s 172.16.1.0/24 -d 192.168.1.0/24 -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -d 172.16.1.0/24 -[......]How to change timezone in a running Docker Container
- The timezone info folder is
/usr/share/zoneinfo - The current timezone info file is
/etc/localtime - The current zoneinfo is a link file point to a special timezone file in the timezone info filder. So, we can change the link file point to another timezone like following example
ln -s /usr/share/zone[......]WD My Cloud EX2 insert a job in Crontab
Issue
When I edited crontab on bash, everything is removed after reboot.
Solution
- editing /usr/local/config/config.xml
- find the
crondsection - insert a item in it
- sample as follow:
-
<crond> <custom_crontab> <count>1</count>[......]
Solution to slow boot time (systemd-networkd-wait-online.service)
# SPDX-License-Identifier: LGPL-2.1-or-later
#
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or[......]