Some Linux commands require administrative privileges for execution. Users without administrative rights can add sudo keyword at the beginning of their command, to temporarily obtain permissions required to execute the command. You can also run sudo command on its own for the same purpose. In both cases, you will be asked for your Linux password …
Typically, Linux administrators and developers use shell variables to store strings and numbers. But sometimes you may need to store file content in shell variable. In this article, we will learn how to do this. How to Store File Content in Shell Variable Let us say you have the following text file data.txt. text1 text2 …
Git is a popular, free, distributed version control software that is used by millions of developers and organizations. It offers a graphical interface as well as a command line interface. People mostly use its command line interface and enter commands as per their requirements in it. Every time you enter git commands it will open …
Typically, we mount local filesystem or directory in our Linux system. But sometimes you may need to mount remote filesystem or directory in Linux. In this article, we will learn how to mount remote filesystem or directory in Linux. This is useful for system administrators who need to work with remote systems. We will be …
How to Mount Remote Filesystem or Directory in Linux Read More »
We often copy files from one location to another on the same system. But sometimes you may need to copy files from Linux to Windows. In this article, we will learn how to copy files from Linux to Windows. You can also use these steps to copy folders across systems with different OS. We will …
Every Linux system has multiple processes running at the same time. They are scheduled for execution by kernel scheduler that determines the next process to be executed depending on multiple factors. It uses a priority-based scheduling algorithm to rank and run processes. Processes with higher priority are executed before those with lower priority. In most …
firewall-cmd is a command line interface for firewalld, a popular firewall software for Linux systems. Firewalld offers many useful features and is often employed by many Linux system administrators to manage their networks & systems. While using firewall-cmd you may get an error ‘firewall-cmd command not found’. In this article, we will learn how to …
How to Fix “firewall-cmd: command not found” error in Linux Read More »
Every Linux system allows you to create hard and symbolic (soft) links to files, applications and directories. Hard links are actual copies of the file or directory whereas symbolic links are simply pointers to the original file or directory. It is important to prevent these links from being deleted otherwise important files & directories on …
How to Protect Hard and Symbolic Links in CentOS Read More »
Shell scripts provide a great way to automate commands, processes and tasks in Linux. Often shell scripts are run on local systems. But sometimes we may need to run a shell script on another server. This is often a requirement for many system administrators that need to do data backups and system maintenance on other …
Often system administrators need to manage systemd services and processes on their local as well as remote systems on their network. They use systemctl utility for this purposes. It allows you to manage system not only on local systems but also remote systems. But while using systemctl they need to manage systemd services over SSH. …
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