How to determine current run-level using Linux

To print current run-level execute: $ who -r run-level 3 2012-01-17 17:06 To print previous and current run-level execute: $ sudo runlevel N 3

SecOps SysOps

How to check established TCP connections

Display established TCP connections inside the terminal.

VLC – quick solution for problems with HTTPS certs

Certificate could not be verified error.