htop is nothing but an interactive process viewer for CentOS Linux 8 system. It is just like default top command with an additional set of options and better display on the monitor. This page shows how to install htop on CentOS 8 using command line options.
How to install htop on CentOS 8 using yum
The procedure for installing htop CentOS Linux 8 is as follows:
- Open the terminal window.
- For remote CentOS 8 server login using ssh command.
- Turn on EPEL repo
- Execute sudo yum search htop command to search for htop on CentOS
- Run sudo yum install htop to install htop in CentOS 8
- Update sudo yum update htop to upgrade htop to the latest version in CentOS 8
Let us see all steps and examples in details.
Turn on EPEL repo on CentOS 8
Make sure EPEL repo enabled and installed on CentOS 8. If not, run:
vivek@centos8-box:$ sudo yum -y install epel-release
vivek@centos8-box:$ sudo yum repolist
Please note that vivek@centos8-box:$ is my shell prompt. You need to type all commands after that prompt. Also you can use the dnf command instead of yum on CentOS 8.
CentOS Linux 8 install htop
It is important that you know how to search for any packages. Therefore type the following command to search for htop package using yum command:
vivek@centos8-box:$ sudo yum search htop
Sample outputs:
Last metadata expiration check: 0:00:36 ago on Thursday 14 May 2020 01:37:04 AM IST. ============================ Name Exactly Matched: htop ============================ htop.x86_64 : Interactive process viewer ================================ Name Matched: htop ================================ bashtop.noarch : Linux resource monitor
Find information about htop package
Run the following command:
vivek@centos8-box:$ sudo yum info htop
Sample outputs:
Last metadata expiration check: 0:01:03 ago on Thursday 14 May 2020 01:37:04 AM IST. Available Packages Name : htop Version : 2.2.0 Release : 6.el8 Architecture : x86_64 Size : 112 k Source : htop-2.2.0-6.el8.src.rpm Repository : epel Summary : Interactive process viewer URL : http://hisham.hm/htop/ License : GPLv2+ Description : htop is an interactive text-mode process viewer for Linux, similar to : top(1).
Installing htop on CentOS 8
First, make sure you system is up to date:
vivek@centos8-box:$ sudo yum update
vivek@centos8-box:$ sudo yum upgrade
Finally, run the following to install htop on CentOS:
vivek@centos8-box:$ sudo yum install htop
Installing htop on CentOS Enterprise Linux 8 server
How to use htop command
The syntax is:
htop
htop [options]
htop [options] arg
Press F10 or q to quit htop session.
One can use a monochrome color scheme, run:
vivek@centos8-box:$ htop -C
vivek@centos8-box:$ htop --no-color
Want to see the tree view by default when running htop? Try:
vivek@centos8-box:$ htop -t
vivek@centos8-box:$ htop --tree
Let us see only processes of a given user named vivek:
vivek@centos8-box:$ htop -u vivek
vivek@centos8-box:$ htop --user=vivek
vivek@centos8-box:$ htop --user=nginx
Limit and show process for only the given PIDs:
vivek@centos8-box:$ htop -p PID
vivek@centos8-box:$ htop -p PID1,PID2
vivek@centos8-box:$ htop --pid=PID,[,PID,PID...]
vivek@centos8-box:$ htop -p 1992
vivek@centos8-box:$ htop -p 1244,2233
CentOS htop keyboard shortcut keys
The following commands are supported while in htop:
Command | Description |
---|---|
Up arrow key | Select (highlight) the previous process in the process list. Scroll the list if necessary. |
Down arrow key | Select (highlight) the next process in the process list. Scroll the list if necessary. |
Left arrow key | Scroll the process list left. |
Right arrow key | Scroll the process list right. |
PgUp, PgDn | Scroll the process list up or down one window. |
Home | Scroll to the top of the process list and select the first process. |
End | Scroll to the bottom of the process list and select the last process. |
s | Trace process system calls: if strace(1) is installed, pressing this key will attach it to the currently selected process, presenting a live update of system calls issued by the process. |
l | Display open files for a process: if lsof(1) is installed, pressing this key will display the list of file descriptors opened by the process. |
Other keyboard shortcuts
u | Show only processes owned by a specified user. |
M | Sort by memory usage (top compatibility key). |
P | Sort by processor usage (top compatibility key). |
T | Sort by time (top compatibility key). |
F | “Follow” process: if the sort order causes the currently selected process to move in the list, make the selection bar follow it. This is useful for monitoring a process: this way, you can keep a process always visible on screen. When a movement key is used, “follow” loses effect. |
K | Hide kernel threads: prevent the threads belonging the kernel to be displayed in the process list. (This is a toggle key.) |
H | Hide user threads: on systems that represent them differently than ordinary processes (such as recent NPTL-based systems), this can hide threads from userspace processes in the process list. (This is a toggle key.) |
p | Show full paths to running programs, where applicable. (This is a toggle key.) |
Ctrl-L | Rfresh the screen. |
F1 | See this help menu. |
How to get help about htop
Simply pass the --help option. For example:
vivek@centos8-box:$ htop --help
vivek@centos8-box:$ man htop
Optional: Linux hide processes when using htop
Set up hidepid=2 option as described here:
$ sudo mount -o remount,rw,nosuid,nodev,noexec,relatime,hidepid=2 /proc
$ htop
Conclusion
This page showed you how to install and use htop on CentOS Unix server. It has many more option. Hence, see the htop home page online here or read man page.
- OpenBSD install htop
- FreeBSD install htop
- Ubuntu Linux install htop
- RHEL 8 install htop
- macOS install htop
- Alpine Linux install htop
- pfSense install htop
- CentOS/RHEL: Install htop An Interactive Text-mode Process Viewer
- Amazon Linux AMI nstall htop
- Install htop on CentOS 8
- OpenSUSE Linux install htop
- Debian Linux install htop
- Arch Linux install htop
🐧 1 comment so far... add one ↓
Category | List of Unix and Linux commands |
---|---|
File Management | cat |
Firewall | Alpine Awall • CentOS 8 • OpenSUSE • RHEL 8 • Ubuntu 16.04 • Ubuntu 18.04 • Ubuntu 20.04 |
Network Utilities | dig • host • ip • nmap |
OpenVPN | CentOS 7 • CentOS 8 • Debian 10 • Debian 8/9 • Ubuntu 18.04 • Ubuntu 20.04 |
Package Manager | apk • apt |
Processes Management | bg • chroot • cron • disown • fg • jobs • killall • kill • pidof • pstree • pwdx • time |
Searching | grep • whereis • which |
User Information | groups • id • lastcomm • last • lid/libuser-lid • logname • members • users • whoami • who • w |
WireGuard VPN | Alpine • CentOS 8 • Debian 10 • Firewall • Ubuntu 20.04 |
Comments on this entry are closed.
Have a question or comment? Start the discussion on our forum thread.