30 Useful Linux Commands for System Administrators
In this article we are going to review some of the useful and frequently used Linux or Unix commands for Linux System Administrators that are used in their daily life. This is not a...
Category: Linux Commands
8 Practical Examples of Linux “Touch” Command
In Linux every single file is associated with timestamps, and every file stores the information of last access time, last modification time and last change time. So, whenever we create new file, access or...
Block SSH Server Attacks (Brute Force Attacks) Using DenyHosts
DenyHosts is an open source and free log-based intrusion prevention security program for SSH servers developed in Python language by Phil Schwartz. It is intended to monitor and analyzes SSH server logs for invalid...
How to Reset Forgotten Root Password in RHEL/CentOS and Fedora
In this post will guide you simple steps to reset forgotten root password in RHEL, CentOS and Fedora Linux with example. There are various ways to reset root password which are. Booting into single...
MySQL Backup and Restore Commands for Database Administration
This article shows you several practical examples on how to perform various backup operations of MySQL databases using mysqldump command and also we will see how to restore them with the help of mysql...
10 Wget (Linux File Downloader) Command Examples in Linux
In this post we are going to review wget utility which retrieves files from World Wide Web (WWW) using widely used protocols like HTTP, HTTPS and FTP. Wget utility is freely available package and...
Disable Certain Package Updates using YUM in RHEL / CentOS / Fedora
YUM (Yellowdog Updater Modified) is an open source default package management system for several Linux flavors like RHEL (Red Hat Enterprise Linux), CentOS (Community Enterprise Operating System)and Fedora. The YUM utility is used install,...
13 Linux Network Configuration and Troubleshooting Commands
Computers are connected in a network to exchange information or resources each other. Two or more computer connected through network media called computer network. There are number of network devices or media are involved...
18 Tar Command Examples in Linux
The Linux “tar” stands for tape archive, which is used by large number of Linux/Unix system administrators to deal with tape drives backup. The tar command used to rip a collection of files and...
11 Cron Scheduling Task Examples in Linux
In this article we are going to review and see how we can schedule and run tasks in the background automatically at regular intervals using Crontab command. Dealing a frequent job manually is a...
