How to tell ssh client to ignore ssh config file

I have a tutorial that explains the basics of the SSH client configuration file and some of the most common configuration options for Linux and Unix developers or sysadmin. In this quick tip, I will explain how and why you sometimes need to ignore or exclude the ssh client config file under Linux, Unix, *BSD and macOS.

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How to check if Ansible collection is installed or not

Sometimes I need a specific Ansible module from ansible-galaxy to carry out a particular type of automation. But I don't know if it is already installed or not or bundled with Ansible when I installed the latest version on Ubuntu Linux. So here is a quick command-line tip for finding out if the Ansible module is installed or not on your development workstations powered by Linux, Unix or macOS.

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How to Change Hostname on Ubuntu 20.04

How do I change the hostname on Ubuntu 20.04 LTS Linux system permanently?

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Change my default shell in Linux using chsh

How do I change my default shell in Linux?

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How do I count how many processes are running in Linux?

How do I see how many processes are running in Linux? How can count all running processes in Linux?

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bash: file: command not found. How to install file

I am running file /usr/sbin/arp command on a Debian VM minimal but getting an error that read as:
bash: file: command not foundHow do I fix this error on a Debian or Ubuntu Linux system? How can I install file command on Linux cloud?

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How to check disk space on Unix servers

I recently switched from a Windows server 2016 to a FreeBSD Unix server. I need to check disk space on Unix command line. How do I find out disk space utilization information using the Unix command-line option?

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