nixCraft - Linux and Unix tutorials for new and seasoned sysadmin

How to install htop on RHEL 8 using yum

last updated August 22, 2019 in Linux, RedHat and Friends

I am a new user of Red Hat Enterprise Linux 8. How do I install htop on RHEL 8 using the yum command?

How To Install EPEL Repo on an RHEL 8.x

last updated August 15, 2019 in Linux, Package Management, RedHat and Friends

How do I install the extra repositories such as Fedora EPEL repo on an Red Hat Enterprise Linux server version 8.x?

How to install networked HP printer and scanner on Ubuntu Linux

last updated August 10, 2019 in Hardware, Linux, Ubuntu Linux

I have HP Officejet Pro printer and scanner. How do I install HP Officejet Pro network printers and scanners on Ubuntu Linux? How can I install HP printer on Ubuntu Linux?

How to check CPU temperature on Ubuntu Linux

last updated August 5, 2019 in Hardware, Linux, Package Management, Ubuntu Linux

How do I check CPU temperature in Ubuntu Linux using a command line and GUI tools on my Thinkpad laptop or Desktop computer?

How to install htop on Ubuntu Linux using apt

last updated July 30, 2019 in Linux, Package Management, Ubuntu Linux

I like htop output, but it is not installed by default on my Ubuntu cloud server. How do I install htop on Ubuntu Linux 18.04 LTS server?

How to check disk space on Unix servers

last updated July 26, 2019 in AIX, Commands, FreeBSD, HP-UX Unix, OpenBSD, UNIX

I recently switched from a Windows server 2016 to a FreeBSD Unix server. I need to check disk space on Unix command line. How do I find out disk space utilization information using the Unix command-line option?

Can I delete /var/cache/apt/archives for Ubuntu/Debian Linux?

last updated July 23, 2019 in Debian / Ubuntu, File system, Linux, Ubuntu Linux

I noticed that /var/cache/apt/archives/ taking lots of disk space on my AWS EC2 cloud server powered by Debian Linux. Can I delete /var/cache/apt/archives/ folder? Is it safe to remove all files? Do we absolutely necessary to keep all these files?