[!NOTE|label:references:]
- How to automatically execute shell script at startup boot on systemd Linux
- Using systemd to control the Docker daemon
- systemd_service.5.manual
- Linux route命令详解：查看和操作IP路由表
- ubuntu配置静态路由及重启生效
- Systemd的Unit文件; systemctl增加服务详细介绍
- SystemdForUpstartUsers
- How to disable IPv6 address on Ubuntu 22.04 LTS Jammy Jellyfish
needrestart
[!NOTE]
$ needrestart -r i -k
Scanning linux images...
Pending kernel upgrade!
Running kernel version:
6.5.0-14-generic
Diagnostics:
The currently running kernel has an ABI compatible upgrade pending.
Restarting the system to load the new kernel will not be handled automatically, so you should consider
rebooting. [Return]
dpkg
$ sudo dpkg --list
# reconfiguring the dpkg package
$ sudo dpkg --configure -a
service
[!NOTE|label:references:]
- how we can see all running services Linux machine?
- GDM
- GNOME Display Manager
- Display managers provide X Window System and Wayland users with a graphical login prompt.
- Ubuntu18-22.04安装和干净卸载nvidia显卡驱动——超详细、最简单
list all
$ sudo service --status-all
$ sudo service --status-all | grep '\[ + \]'
$ sudo service --status-all | grep '\[ - \]'
# list all running services on Ubuntu
$ sudo systemctl list-units
$ sudo systemctl list-units --state running
$ sudo service --status-all
[ + ] acpid
[ - ] alsa-utils
[ - ] anacron
[ + ] apparmor
[ + ] apport
[ + ] avahi-daemon
[ - ] bluetooth
[ - ] console-setup.sh
[ + ] cron
[ + ] cups
[ + ] cups-browsed
[ + ] dbus
[ + ] gdm3
[ - ] grub-common
[ - ] hwclock.sh
[ + ] irqbalance
[ + ] kerneloops
[ - ] keyboard-setup.sh
[ + ] kmod
[ - ] lm-sensors
[ - ] lvm2
[ - ] lvm2-lvmpolld
[ + ] openvpn
[ - ] plymouth
[ + ] plymouth-log
[ + ] procps
[ - ] pulseaudio-enable-autospawn
[ - ] rsync
[ - ] saned
[ - ] speech-dispatcher
[ - ] spice-vdagent
[ + ] ssh
[ + ] sssd
[ + ] udev
[ + ] ufw
[ + ] unattended-upgrades
[ - ] uuidd
[ - ] whoopsie
[ - ] x11-common
[ - ] xrdp
ubuntu 17.10 bootup settings
create script
$ cat /usr/local/bin/do_route.sh
#!/usr/bin/env bash
# Destination Gateway Genmask Flags Metric Ref Use Iface
# 0.0.0.0 192.168.10.1 0.0.0.0 UG 0 0 0 eno2
/sbin/route -n | grep "0\.0\.0\.0.*192\.168\.10\.1.*eno2" > /dev/null 2>&1
if [ $? != 0 ]; then
sudo route add default gw 192.168.10.1
fi
## Destination Gateway Genmask Flags Metric Ref Use Iface
## 0.0.0.0 130.147.180.65 0.0.0.0 UG 0 0 0 eno1
/sbin/route -n | grep "0\.0\.0\.0.*130\.147\.180\.65.*eno1" > /dev/null 2>&1
if [ $? == 0 ]; then
sudo route delete -net 0.0.0.0 gw 130.147.180.65 netmask 0.0.0.0
fi
host="161.92.35.78 130.147.236.5 180.166.223.190 140.207.91.234 42.99.164.34 185.46.212.34"
for _h in ${host}; do
sudo route add -host ${_h} gw 130.147.180.65
done
route="130.147.0.0 130.140.0.0 130.146.0.0 137.55.0.0 161.83.0.0 161.84.0.0 161.85.0.0 161.88.0.0 161.91.0.0 161.92.0.0 185.166.0.0"
for _r in ${route}; do
sudo route add -net ${_r} netmask 255.255.0.0 eno1
done
touch /home/devops/hi-marslo
create service
$ ls -altrh /lib/systemd/system/do_route.service
-rwxr-xr-x 1 root root 140 Jan 15 22:08 /lib/systemd/system/do_route.service
$ cat /lib/systemd/system/do_route.service
[Unit]
Description=Add static route for two interface
[Service]
ExecStart=/usr/local/bin/do_route.sh
[Install]
WantedBy=multi-user.target
Alias=myroute.service
enable the service
$ sudo systemctl enable do_route.service
Created symlink /etc/systemd/system/multi-user.target.wants/do_route.service → /lib/systemd/system/do_route.service.
Created symlink /etc/systemd/system/myroute.service → /lib/systemd/system/do_route.service.
$ sudo systemctl start do_route.service
disable the service
$ sudo systemctl disable do_route.service
Removed /etc/systemd/system/myroute.service.
Removed /etc/systemd/system/multi-user.target.wants/do_route.service.
re-enable the service
$ sudo systemctl enable add_route.service
Created symlink /etc/systemd/system/marslo_route.service → /lib/systemd/system/add_route.service.
Created symlink /etc/systemd/system/multi-user.target.wants/add_route.service → /lib/systemd/system/add_route.service.
route FLags
U: Up: 表示此路由当前为启动状态H: Host: 表示此网关为一主机G: Gateway: 表示此网关为一路有R: Reinstate Route: 使用动态路由重新初始化的路由D: Dynamically: 此路由是动态性的写入M: Modifed: 此路由是有路由守护程序或导向器动态修改!: 关闭状态