# Journald

output since booting:

`journalctl -b`

Follow:

`journalctl -f`

Keep an eye on sshd service:

`journalctl -b -f -l -u sshd`

Examples:

`journalctl -b --system`  
`journalctl -b --user`

`journalctl --since=yesterday`

`journalclt -b _PID=1`  
`journalclt -b _UID=1001`  
`journalclt -b /usr/bin/sudo`  
`journalctl KERNEL_DEVICE=+scsi:0:0:0:0`  
  
`-x -> extra info`

To monitor the output of dmesg:

`# journalctl -kf`

or

`# dmesg -wH`