You can install htop on CentOS/RHEL/Fedora Linux using EPEL repo. From the man page:
Htop is a free (GPL) ncurses-based process viewer for Linux. It is similar to top, but allows you to scroll vertically and horizontally, so you can see all the processes running on the system, along with their full command lines. Tasks related to processes (killing, renicing) can be done without entering their PIDs.
Install htop on CentOS/RHEL/Red hat Linux using yum
First you need to enable EPEL repo as described here to install atop. Type the following yum command:
# yum install htop
Sample outputs:
Loaded plugins: auto-update-debuginfo, protectbase, rhnplugin, security This system is receiving updates from RHN Classic or RHN Satellite. 0 packages excluded due to repository protections Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package htop.x86_64 0:1.0.1-2.el6 will be installed --> Finished Dependency Resolution Dependencies Resolved ============================================================================================ Package Arch Version Repository Size ============================================================================================ Installing: htop x86_64 1.0.1-2.el6 epel 75 k Transaction Summary ============================================================================================ Install 1 Package(s) Total download size: 75 k Installed size: 161 k Is this ok [y/N]: y Downloading Packages: htop-1.0.1-2.el6.x86_64.rpm | 75 kB 00:00 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : htop-1.0.1-2.el6.x86_64 1/1 Verifying : htop-1.0.1-2.el6.x86_64 1/1 Installed: htop.x86_64 0:1.0.1-2.el6 Complete! |
How do I use htop program?
Type the following command as root user. The basic syntax is:
# htop
# htop [options]
Sample outputs:
htop command examples
Here are some conman and useful examples of htop commands:
Delay between data updates, in tenths of seconds
# htop -d 5
# htop --delay=10
How to start htop in monochrome mode i.e. disable colors
# htop -C
# htop --no-color
# htop --no-colour
Show only the process of a given user (say nixcraft or apache user)
# htop -u nixcraft
# htop --user=apache
Display working thread for pagemap memory stats
# htop -p
See htop(1) command man page for more information.