In this post, we will continue from our previous discussion related to Understanding the use of SELinux and learn how to change SELinux context of files and directories using semanage and chcon commands. Further, we will discuss how to change SELinux booleans using the setsebool command. In the previous discussion, we created a /test directory …
Let’s start with a scenario Before getting into the theory about What is SELinux? Let’s try to understand the use of SELinux by taking an example. To host any webpage using the httpd web service we create the web pages in /var/www/html directory. So create one sample web page named index.html in /var/www/html and write …
Both the commands are useful to display the information related to users and groups. Therefore let’s understand the difference between using the id and lid commands in Linux. id command Use prints the user and group ids. The commands prints the user id and group ids of the user whose name is passed as the …
VDO is a kernel module that can reduce replication bandwidth and save disc space. VDO is a programme that sits on top of any block storage device and performs three tasks:1. zero-block elimination, 2. redundant block deduplication,3. data compression. These are the critical steps in the data reduction process that allow VDO to lower its …
How to Create Virtual Data Optimizer (VDO) in RHEL Read More »
Use The cat command in Linux is used to concatenate files and print their content on the screen. The most common use is to view the contents of any file. Syntax cat [OPTION]… [FILE]… Example COnsider a file name sep.txt having some content in it. Then we can use the cat command to view its …
What is Stratis? Stratis is a Linux-based local storage management system. It focuses on simplicity and ease of use while providing advanced storage capabilities. The following tasks are made easier with Stratis: Storage setup at the start Changing things afterwards Making use of enhanced storage options Stratis is a local storage management system that enables …
Linux offers two commands to compare the text written within files: comm and diff. In this article we focus on the use of comm and diff commands in Linux and understand the difference in the output by each. comm command in Linux The comm command is used to compare two sorted files. The output contains …
We use the sort command in Linux to sort the content of a file. The sorted output is displayed on the screen. Syntax of sort command $sort [OPTION]… [FILE]… Example Options used with sort command -f: ignore case This option sorts the uppercase alphabets higher in order. The figure below shows the use of …
Logical Volume Management (LVM) in Linux is a method to easily manage disk space. Suppose as an admin you have three disks: 60Gb, 50Gb and 40Gb and you want to allocate 80Gb and 70Gb of space to two users U1 and U2 respectively. Now, there is no single unit of either size available. This is …
When you want to learn about disk partitioning or swap space or Logical Volume management or Stratis or VDO you need to have a free disk in your system. But by default when you install Linux in either VMware or Virtual-box there is no extra disk or free disk available. In this post, we will …
How to add virtual disk in Linux using VMware/Virtual-Box Read More »