tldr/pages/linux/sysctl.md

380 B

sysctl

List and change kernel runtime variables.

  • 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