systemd-ctl.cheat

% systemd-ctl, pushou

# some *ctl program
<LIST_CTL> 

# networkctl
networkctl <NETWORKCTL_OPTIONS> <NETWORKCTL_ORDERS>

# set hostname 
hostnamectl set-hostname hostname 

# hostnamectl full-option
hostnamectl <HOSTNAMECTL_ORDERS>

# journalctl grep VALUE 
journalctl -k --grep "UFW BLOCK"

# journalctl netfilter
journalctl -k | grep "IN=.*OUT=.*" | less
journalctl -k | grep "UFW BLOCK" | less

# journalctl kernel log
journalctl -kf

# journalctl verbose
journalctl -o verbose

# journalctl list-boots
journalctl  --list-boots  |from ssv -a

# journalctl full log for unbound
journalctl --no-pager --full -u unbound

# journalctl clean
journalctl --disk-usage
journalctl --vacuum-time="2 days"
journalctl --vacuum-size=4GB

# journalctl emergency to errors
journalctl -p emerg..err

# journalctl json output to nushell
journalctl  --list-boots  |from ssv -a

# timedatectl ntp
timedatectl set-ntp true

# timedatectl status
timedatectl status

# systemctl insactive failed
systemctl list-units -all --state=<STATE>

# test if unit service
systemctl is-active --quiet wazuh-agent || systemctl start wazuh-agent

# loginctl list users
loginctl list-users

# enable linger (services for the user are not stopped by logout)
loginctl enable-linger myuser

# systemd-run
systemd-run  --unit stress-unit2    -p CPUQuota=50% -p MemoryLimit=512M -p OOMPolicy=continue /usr/bin/stress --cpu 4 --vm-bytes 8G

# systemd-run interactive with accounting
systemd-run -p IPAccounting=1 -t /bin/sh
systemd-run -p IPAddressDeny=any -p IPAddressAllow=8.8.8.8 -p IPAddressAllow=127.0.0.0/8 -t /bin/sh
systemd-run -p IPAccounting=yes -p IOAccounting=yes -p CPUAccounting=true -p MemoryAccounting=true -p TasksAccounting=true -p ProtectSystem=strict -p PrivateDevices=yes -t -S
systemctl --no-pager  show ip-accounting  run-u282.service|grep IP

$ STATE: echo 'active inactive failed' | tr ' ' '\n'
$ HOSTNAMECTL_ORDERS: echo 'status hostname icon-name chassis deployment location' | tr ' ' '\n'
$ NETWORKCTL_ORDERS: echo 'status list lldp label delete up down reload renew forcerenew reconfigure' | tr ' ' '\n'
$ NETWORKCTL_OPTIONS: echo '-a -s -l -asl' | tr ' ' '\n'
$ LIST_CTL: echo 'bluetoothctl bootctl grdctl localectl oomctl pactl snapctl swtpm_ioctl udisksctl boltctl busctl hostnamectl obexctl powerprofilesctl resolvectl switcherooctl timedatectl' | tr ' ' '\n'