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How to Use systemctl status Command to Check Service Status

The systemctl status command is the easiest way to get a snapshot of your Linux system's service's health. You can use it to quickly find … See more

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URL: https://linuxopsys.com/topics/systemctl-status-command

Shell Script to Check Linux Server Health

WebBash Scripting. In this tutorial, we will show how to write a shell script to perform a Linux server health check. This script collects system information and status …

Category:  Health Go Health

How to Shrink Root Partition without Live CD/USB

WebIn the script, we will use e2fsck to check filesystem health and resize2fs to shrink the filesystem. Using fdisk we perform the following task in the script. Start delete …

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Bash Parameter Expansion with Cheat Sheet

WebBash parameter expansion or parameter expansion is defined by the ‘$’ symbol and the optional curly brackets ( { }). The parameter expansion is used with the …

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How to Check LUN or SAN Disk in Linux

Web1. Check attached LUN or SAN disk in Linux. To check the attached LUN from a storage device in Linux, we can use the /proc/scsi/scsi file content but it will give …

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How to Test SSD/HDD Health in Linux

WebTest SSD/HDD Health using Gnome Disks. With GNOME disks utility you can get a quick review of your SSD drives, format your drives, create a disk image, run …

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Curl Command Cheat Sheet

WebCurl Command Cheat Sheet – Quick Reference Guide. Curl Stands for “Client URL”. It is a command tool that allows you to transfer data to and from a server. …

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How to List Mounted Drives on Linux

WebIn Linux, mount command mounts a storage device or filesystem, and let's go through commands that can display all those mounts. 1. Listing from /proc using cat …

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Understanding top Command CPU Usage

WebYou can use lscpu command to get information about the number of threads per core. By default, the processes are sorted by the %CPU column in descending order. …

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How to Use ethtool Command with Examples

WebThe ethtool command is used to display/change Ethernet adapter settings. You can change network card speed, auto-negotiation, wake on LAN setting, duplex mode …

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Special Variables in Bash Explained [With Examples]

Web2.2. $1 to $9 - Arguments to the Script. We can refer to the arguments passed to the script by using the special variables $1 to $9. Example: #!/bin/bash. echo …

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wget Command in Linux Explained [With Examples]

WebSave the file under a different name. Use the -O (uppercase 'O') option with wget command to specify the name of the file that will be saved on the local system. By …

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iostat Command in Linux Explained [With Examples]

WebThe iostat is a command-line tool used primarily for monitoring the input/output (I/O) performance of storage devices, such as hard drives, partitions, and …

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Bash Exit Command Explained [With Examples]

WebBy convention, an exit status code of 0 indicates success, while any other value indicates failure. Let us develop a bash script with a function to divide two numbers …

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Guide to Scan/Detect New LUNs on Linux

WebWhen you are running RedHat Enterprise Linux 5, 6, and 7 series system with DM-Multipath and the software iSCSI initiator, you can discover new LUNs by …

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How to Build Debian Packages

WebSyntax: dpkg-deb —build <debian-source-directory> . The command will build the package in the current directory. The . at the end of the command will build the …

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Bash Exec Command with Examples

WebThe main difference between the two functions is that invokeScriptAndReturn will continue execution of the script after listFilesInDirectory.sh completes, whereas …

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Bash mapfile Command Explained [With Examples]

WebBash mapfile command. The mapfile command offers a powerful yet simple solution, allowing you to effortlessly read lines from standard input (or a specified file …

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How to Add Repository to Debian

Web1. Adding repository from terminal. You can add a package repository to Debian 2 ways from the shell: manually or using apt. The package repository information …

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