Update cheatsheets

linux/sysctl

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# sysctl
+
+> List and change kernel runtime variables.
+> More information: <https://manned.org/sysctl.8>.
+
+- Show all available variables and their values:
+
+`sysctl -a`
+
+- Set a changeable kernel state variable:
+
+`sysctl -w {{section.tunable}}={{value}}`
+
+- Get currently open file handlers:
+
+`sysctl fs.file-nr`
+
+- Get limit for simultaneous open files:
+
+`sysctl fs.file-max`
+
+- Apply changes from `/etc/sysctl.conf`:
+
+`sysctl -p`