Linux and Unix, Open Source, Linux Howtos
Disk space on Linux can be expanded by adding a new LUN or resizing an existing LUN on the system. In most cases, the online resizing of the multipath device …
How to Resize an Online Multipath Device on Linux Read More
In some cases, you may need to find a block device mapped against a logical unit number (LUNs) for filesystem (FS) expansion or disaster recovery (DR) activity. Also, this information …
How to Find SAN disk LUN id in Linux Read More
The fsck (stands for File System Consistency Check) is used to check and repair one or more Linux filesystems. This check will run automatically at boot time when a filesystem …
How to Check and Repair EXT4 Filesystem in Linux Read More
Deleting (or removing) a file in Linux from the command line can be done using the rm command. It allows you to delete more than one files at once. Also, …
How to Remove Multiple Files at once on Linux Read More
As a Linux administrator, you may know how useful the command line can be to work with various activity such as installing the application, installing the system patch, and restarting …
How to Run Multiple Commands at once in Linux Read More
The tee command reads standard input (stdin) and writes the result to standard output (stdout) and one or more files simultaneously. It basically displays the command output on the terminal …
Linux tee command with examples Read More
The firewall is essential for controlling the flow of network traffic in and out of the Linux server. It enables users to control incoming network traffic on host machines by …
How to configure firewalld rules in Linux Read More
systemd is the default system manager in most of the major Linux distributions, which comes with a new logging daemon called ‘journald’. For many years, system and kernel logs in …
How to use journalctl to analyze logs in Linux Read More
Disk IO issues (input/output) are one of the most common causes of poor performance on Linux system. This occurs when applications try to quickly read or write too much data …
6 best tools to monitor disk IO performance in Linux Read More
‘usermod’ & ‘passwd’ commands are used to lock or unlock one user account at a time, but you may need to write some small shell scripts to perform this action …
How to lock & unlock multiple users in Linux Read More