Redirect output from a command to a file that you don't have permission to write to
How to redirect output from a command you’ve run to a file that you don’t have permission to write to i.e. to a destination that you need to use sudo on.
Linux
Fetch Process IDs or Names of the Processes Listening On Ports
Fetch Process IDs or Names of the Processes Listening On Ports.
Using the file command to identify a file
Using the file command to identify a file’s type on a *nix system.
Fetching useful information about your storage disks in the CLI
How to fetch information from the manufacturer and model to temperatures.
Using an Android Device as a Second Monitor on *nix
Using X forwarding sending an application over to an Android device is relatively painless.
Get Your External IP Address From the CLI
How to get your external IP address on the CLI.
Delete All Files Except for a Particular Extension
How to delete all the files in the current directory except for files of a certain extension.
Copy and Paste to and From the Clipboard in the CLI
How to copy and paste to and from the clipboard while working in the CLI.