rpm command HowTo - Linux / Unix Q & A from nixCraft

Linux: Find Out What Is Using TCP Port 80

last updated August 22, 2013 in Commands, Linux, Networking

How do I find out what is listing or using tcp port number 80 on Linux based systems using command line options?

Find Out PHP Version installed On Unix / Linux Server

last updated July 26, 2017 in BASH Shell, Linux, PHP, UNIX

How do I find out php version under Linux operating systems? How do I find out php version under Unix like systems? How to find out what version of PHP is installed on my server?

RHEL / CentOS / Fedora: Verify GPG Key For Package Update

last updated June 14, 2011 in RedHat and Friends

How do I verify that the system using correct GPG keys to verify all patches, packages and update installed from RHN or repo under RHEL 5 or 6 server operating systems?

Linux Install an RPM File

last updated April 24, 2011 in Package Management, RedHat and Friends

I‘m a new Linux system administrator and wanted to perform software installation and maintenance. I’ve downloaded a file called awstats.i386.rpm and how do I install it under CentOS / RHEL / Suse / Fedora / Redhat Linux?

Find Out MySQL Version

last updated January 21, 2013 in Linux, MySQL, UNIX

How do I find out mysql version under Linux or Unix operating systems?

read_urandom: /dev/urandom: open failed: No such file or directory

last updated February 15, 2011 in Troubleshooting

My CentOS Linux based server failed to boot with the following error:

read_urandom: /dev/urandom: open failed: No such file or directory

How do I fix this problem?

Linux RPM: View Script That Run When You Install RPM Files

last updated April 5, 2010 in CentOS, Fedora Linux, RedHat and Friends

All rpm packages can run scripts after a package is added or removed. How do I view pre/post install and uninstall rpm file scripts under rpm based Linux distributions?