What is chattr and lsattr command in Linux and how to use them ?
In this article, we will look what are chattr and lsattr commands in Linux and how to use these commands. 1. What is chattr and lsattr ? chattr corresponds to...
Month: January 2018
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How to check file access time, metadata change time, and modification time in Linux ?
Many of us know how to check file modification time by long listing the file. However we used to avoid a very interesting feature of Linux “ls command” to check...
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Script to check if network cable connected to all interfaces in Linux ?
In this post, we will check a small command to check network cable status on all eth or network interfaces of our Linux system. Ideally we used to check for...
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Difference between less and more command, & what should i use in Linux ?
In this article, we will look at the differences between less and more command in Linux and what command should we use to view files in Linux and in what...
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What is root and rootkit in Linux ?
For linux or Unix beginners, it is very difficult to understand what is meant by root in Linux or Unix and what rootkit refers to. In this post, we will...
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Linux kernel release convention: How a linux kernel release is named ?
In this article, we will look how a linux kernel release is named, and what is meant by the complete name of a linux kernel. If you look into your...
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RHEL or Centos: What is umask in linux and how to set/change it ?
Today we will look: what is meant by umask in linux and how to set it to change default permissions for files and directories in Linux. For this article to...
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What are the different ways to get IP Address of our Linux system?
In this article, we will check how to grep the IP address of our system and netmask in a quick way. 1. Using “ip addr” command. This command also fetches...
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How to list all TCP ports in Linux ?
In this post, we will check how to list all TCP ports in Linux. Lets us quickly check the command and output: [root@nglinux ~]# cat /etc/services | grep -Po '^\w+.*\d{1,5}/tcp'...
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How to find all hard links to a file on your Linux system ?
We all as a system admin should know how to find all hard links to a file on our system. So let us have a look, how to find this...