Monitoring system processes using htop

htop is an advanced alternative to top in linux for monitoring processes.

Installation on Linux Ubuntu/Debian is performed with the command:

sudo apt-get install htop

Installation on Linux CentOS/Fedora:

sudo yum install htop

Startup command:

htop

I will describe the control keys:

Up and down arrows can switch between processes.
Space/U – marking/unmarking process
F1 – reference
F2 – settings
F3 – process search
F4 – list filtering
F5 – tree display
F6 – list sorting
F7/F8 – increase/decrease priority
F9 – kill a process or marked processes (works if htop is running as administrator)
F10 or q – output
Shift+p – sorting by processor load
Shift+m – sorting by memory load
Shift+t – sorting by the duration of the process

Official site: htop.sourceforge.net

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