# log > Log entries the router keeps in memory: the default memory buffer, the buffers of other memory actions and the newest entries of disk actions. /log/print lists the entries of every buffer; where buffer= limits the... ----------- ## log **Type:** Directory Log entries the router keeps in memory: the default `memory` buffer, the buffers of other memory actions and the newest entries of disk actions. `/log/print` lists the entries of every buffer; `where buffer=` limits the output to one of them, `follow` keeps printing new entries, `follow-only` prints only new ones, `with-extra-info` appends the extra fields, and `file=` saves the output to `.txt`. The `/log/info`, `/log/warning`, `/log/error` and `/log/debug` commands add a message with the topics `script` and the level, the same as `:log` in a script. Which messages are kept is set by the rules in [`/system/logging`](system/logging/). See [Log](../diagnostics-monitoring-and-troubleshooting/log/). Buffer the entry belongs to: `memory` for the default buffer, or the name of another memory action or of a disk action. A disk action's newest entries show here, and after a reboot the entries of its active file. `/log/print` without a filter lists every buffer, so a message passed to several actions shows once per action. Date and time the entry was added. Topics of the entry, for example `system,info,account`. The rules in [`/system/logging`](system/logging/) select messages by these topics. Text of the entry, with the rule's `prefix` in front when the rule has one. Extra `key=value` fields that some messages carry, for example a login: `app=ssh duser=admin outcome=success src=192.0.2.1`. `print with-extra-info` appends them to the message, and the `cef` remote log format sends them after `msg=`.