pm-hibernate command HowTo - Linux / Unix Q & A from nixCraft

Linux Command: Put Laptop / Netbook In Hibernate / Suspend Mode

in CentOS, Debian / Ubuntu, Hardware, Linux, RedHat and Friends, Suse last updated July 20, 2016

How do I suspend or hibernate from bash shell command line under Linux operating systems? How do I suspend or hibernate my Ubuntu Dell laptop using command line, without using additional software?