Update cheatsheets

tldr/linux/aureport

@@ -0,0 +1,37 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# aureport
+
+> Generate summary reports of auditd logs.
+> More information: <https://manned.org/aureport>.
+
+- Display a summary of auditd events:
+
+`sudo aureport`
+
+- Generate a summary of login events:
+
+`sudo aureport {{[-l|--login]}}`
+
+- List all syscall reports:
+
+`sudo aureport {{[-s|--syscall]}}`
+
+- Generate a summary of executable events:
+
+`sudo aureport {{[-x|--executable]}}`
+
+- Show a summary of events for a specific time range:
+
+`sudo aureport {{[-ts|--start]}} {{start_time}} {{[-te|--end]}} {{end_time}}`
+
+- List all audit files and the time range of events they cover:
+
+`sudo aureport {{[-t|--log-time]}}`
+
+- Display help:
+
+`aureport --help`

tldr/linux/ceph

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # ceph
 
 > A unified storage system.
-> More information: <https://ceph.io/en>.
+> More information: <https://docs.ceph.com/en/latest/man/8/ceph/>.
 
 - Check cluster health status:
 

tldr/linux/slabtop

@@ -0,0 +1,34 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# slabtop
+
+> Display kernel slab cache information in real time.
+> See also: `top`, `htop`, `atop`.
+> More information: <https://manned.org/slabtop>.
+
+- Start `slabtop`:
+
+`sudo slabtop`
+
+- Sort by [c]ache size:
+
+`sudo slabtop {{[-s|--sort]}} c`
+
+- Sort by number of [o]bjects:
+
+`sudo slabtop {{[-s|--sort]}} o`
+
+- Sort by object [s]ize:
+
+`sudo slabtop {{[-s|--sort]}} s`
+
+- Display once and then exit:
+
+`sudo slabtop {{[-o|--once]}}`
+
+- Display help:
+
+`slabtop {{[-h|--help]}}`

tldr/linux/systemctl-service-log-level

@@ -0,0 +1,17 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# systemctl service-log-level
+
+> Get or set the runtime log level of a service via D-Bus.
+> More information: <https://www.freedesktop.org/software/systemd/man/systemctl.html#service-log-level%20SERVICE%20%5BLEVEL%5D>.
+
+- Show the current log level of a service:
+
+`systemctl service-log-level {{service_name}}`
+
+- Set the log level of a service (the level name can be replaced with a number from 0 to 7):
+
+`systemctl service-log-level {{service_name}} {{emerg|alert|crit|err|warning|notice|info|debug}}`