In shell scripts if you need to get you local IP address corresponding to your hostname then you can use this command

Here is the script: #!/bin/bash - #=============================================================================== # # FILE: imgOrg.sh # # USAGE: ./imgOrg.sh # # DESCRIPTION: # # OPTIONS: --- # …

Trying to find the total usage for each of the file types by extension, then here is a quick bash function for you : disk_usage_type () { find . -name '*'$1 -ls | awk ' BEGIN{ a[0]="Bytes"; a[1]="KB"; …

So, lets say you have downloaded the SHA256SUMS files. This file contains the sha256sum for multiple files and you want to compare the values for only one or some of them, then the simplest thing you …

If you have tried to get the count of lines in file, the you would know about “nl” or “wc -l”. But as you are aware these give you number of lines with other details as well and you need to post …

As you would have noticed in the recent versions of bash, expansion does not work properly when expanding directory names. So, for something like this cd $varname if you press tab, then variable name …

Here is description of the tool: […] To install dnf install ShellCheck And just run the tool on the script to get the common errors.

First you need to install gettext, which by the way might be already installed, however you can install with dnf install gettext Details of the package: […] Usage examples:

ionice is utility provided by the package util-linux. Description of util-linux: […] […] With the help of this utility, you can set the scheduler priority for your IO scheduling upto …

If you want a ssh key to be able to run a custom command only and nothing beyond that, then you can use the “command” option in the authorized_keys file of ssh. For example, to limit user to run only …

Here is a nice little handy function that I use very regurlarly. You can use this function with parameter to just grep for that or just type psa to see all the running processes. Just put this in your …

To refer to first parameter from the last command quickly, you can use !^ Note: This can also be referred as “!!:1“