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windows administrator: Run command as administrator (elevation)

April 8, 2026
 |  No Comments
 |  command, configuration, console, information, windows
If when running a command in CMD Windows it says “Requires elevation” or “Run as administrator” example: To run the command as administrator, you must […]

redirect port and IP to another port and IP in macOS

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 |  command, configuration, information, macos, public_ip, router
search for network interface in macOS or The name of a network interface through which you have wifi/ethernet internet can be called “en0” Install Socat […]

View high-resolution images in the console on macOS

April 7, 2026
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 |  chafa, command, image, information, macos
Install with brew: use or command: If the image name contains spaces, enclose everything in single quotes (‘)

How to tell if a port is open given an IP address in macOS

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 |  command, information, internet, macos, port
the command is: hostname is a string as ‘www.google.com’ or ‘abcd’

be able to ping one’s own PC/server (from internet)

April 6, 2026
 |  No Comments
 |  command, configuration, information, internet, linux, Linux Ubuntu Server, macos, server, windows
By default, in the router’s “firewall” settings, option “Block Anonymous Internet Requests” is enabled and blocks ping You need to disable it and save it […]

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