SSH, or secure shell, is a Unix shell used for secure communication between two networked computers. You may wish to securely download files from a remote system ...

If you’re using Telnet to control network devices, you should consider switching to something more secure. Mike Mullins tells you how to replace Telnet with Secure Shell (SSH). Using Telnet, a TCP/IP ...

While Linux systems install with thousands of commands, bash also supplies a large number of “built-ins”—commands that are not sitting in the file system as separate files, but are part of bash itself ...

This article is reprinted from the book A Practical Guide to Linux Commands, Editors, and Shell Programming 3rd edition, with permission of the author and publisher ...

Linux built-ins are commands that are built into the shell, much like shelves that are built into a wall. You won’t find them as stand-alone files the way standard Linux commands are stored in ...