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Mac OS X

How to find all hard links in a directory on Linux

I have a file named /etc/passwd i and I would like to find all hard links to this file in a directory. How do I find out all other hard links to the /etc/passwd in /backups/ directory? How can find all hard links to a given file using Linux or Unix command line option?
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How to install Ansible on Apple MacOS X using command line

How do I install the Ansible software to automate apps and IT infrastructure from my Apple Macbook pro running MacOS X?
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How to fix: MacOS keep asking passphrase for ssh key after upgrade or reboots

I recently upgraded my MacOS Sierra and now ssh command keep asking for passphrase as follows when I try to login to my remote Linux/Unix server:
      Enter passphrase for key ‘/Users/vivek/.ssh/id_ed25519’:
How do I fix MacOS Sierra upgrade that keep breaking ssh keys in terminal?
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Linux / Unix: “-bash: python: command not found” error and solution

I am a new user and trying to run Python program. I have a cloud based VM/VPS and when I type python mycode.py at the terminal of my server, I get the following error:
-bash: python: command not found

How do I solve this problem?
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How to change the screenshots save file location in MacOS X

I know how to capture my whole screen or just part of it. The screenshot is automatically saved to my desktop, and it is cluttering the entire desktop with .png screenshot files. How can I change where screenshots are saved on my MacOS X system instead of the default desktop location?
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How to remove all old and outdated brew packages on MacOS

I am using Homebrew to install packages on MacOS Sierra or Mac OS X. I noticed multiple version of bash or curl installed in /usr/local/Cellar/bash/. How can I delete an outdated version of brew packages and only keep the latest version on my system?
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How to use curl command with http/2 on MacOS X

I am using a MacOS sierra (version 10.12.1). How do I use curl command with http2/ protocol? I am getting an error that read as follows:

            curl -I --http2 https://google.com
            curl: (1) Unsupported protocol

How do I solve this problem and use cURL with HTTP/2 on Mac OS X or MacOS Sierra?
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How to get Ethernet Link Speed in MAC OS X Through Command Prompt

I‘m a Mac OS X user. How do I find out my Ethernet Link Speed in terminal using bash shell prompt? How do I see my current Ethernet connection Speed in Mac OS X?
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OS X install Amazon AWS command-line interface (CLI) tool

How do I setup and install the official Amazon AWS Command Line Interface (cli) on an Apple Mac OS X system?
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How to enable colorized output for the ls command in Mac OS X Terminal

I am new to Apple OS X. How do I enable colorized output for my ls command on Apple Mac OS X just like the ones that shown on my Ubuntu Linux server? How do I configure Mac OS X Terminal app to have color ls output?
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