In this article, we will look how to view, analyze and setup SSHD logs on our Redhat or Centos Linux system. 1. Viewing SSHD Log file. ## For Ubuntu [root@nglinux...
Processes marked as are zombie(Z in ps command output) processes (also called as “dead” processes) that remain in process table memory because their parent has not destroyed them properly after...
In Linux, Character Classes is a group of characters which are responsible to perform pattern matching. Character Classes are defined using “[]” i.e. square brackets and matches any of the...
This is one of another basic article that explains various commands through which we can look for IP address assigned to our Linux Operating System. 1. ifconfig Ifconfig is most...
Today we will look at a very basic article to know various ways to create a file in linux. Lets see the various commands below. 1. Touch command [root@ngelinux ]#...
Variables in Linux can be made read only using the keyword “readonly”. For example, if we want a variable to contain a value say 10 and must not be changed...
Today in this post, we will look how to perform redhat or centos major release upgrade. I. RHEL 5 to RHEL 6 a. In-place upgrades between major RHEL versions...