Hope this helps https://wiki.archlinux.org/title/system_maintenance
#logs
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... journalctl
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#10200 📣 ```js
To actively follow log (like tail -f):
journalctl -f
To display all errors since last boot:
journalctl -b -p err
To filter by time period:
journalctl --since=2012-10-15 --until="2011-10-16 23:59:59"
To show list of systemd units logged in journal:
journalctl -F _SYSTEMD_UNIT
To filter by specific unit:
journalctl -u dbus
To filter by executable name:
journalctl /usr/bin/dbus-daemon
To filter by PID:
journalctl _PID=123
To filter by Command, e.g., sshd:
journalctl _COMM=sshd
To filter by Command and time period:
journalctl _COMM=crond --since '10:00' --until '11:00'
To list all available boots:
journalctl --list-boots
To filter by specific User ID e.g., user id 1000:
journalctl _UID=1000
To filter by specific SYSLOG_INDENTIFIER:
journalctl -t systemd-resolved
tldr:journalctl
journalctl
Query the systemd journal.
More information: https://manned.org/journalctl.
Show all messages with priority level 3 (errors) from this [b]oot:
journalctl -b --priority=3
Show all messages from last [b]oot:
journalctl -b -1
Delete journal logs which are older than 2 days:
journalctl --vacuum-time=2d
[f]ollow new messages (like tail -f for traditional syslog):
journalctl -f
Show all messages by a specific [u]nit:
journalctl -u unit
Filter messages within a time range (either timestamp or placeholders like "yesterday"):
journalctl --since now|today|yesterday|tomorrow --until YYYY-MM-DD HH:MM:SS
Show all messages by a specific process:
journalctl _PID=pid
Show all messages by a specific executable:
journalctl path/to/executable
$```
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