The most arcane shell commands and options are explained with plenty of examples. “Here” documents, a way to feed input to a script or command within the script itself, are explained thoroughly.

Unlike shell scripts on Unix systems, batch files are run by typing their names without their extensions. So to run a batch file named mapdrive.bat, you would type only “mapdrive”.

Shell basics The Unix command line shell is roughly equivalent to the command window in Microsoft Windows (cmd or PowerShell).

What you’ll learn: The basics of interacting with computers using the Unix shell (a.k.a. the command line), which is a foundational skill for all other technical computing. You’ll learn how to ...

Command-line essentials When you ssh into a Unix-like system, the system looks up your user account information and spawns a new shell process based on your preferences. This shell process is then ...

This points to a fundamental difference in the way that associative arrays are implemented in the two scripting languages. In Perl, every other array element is actually the index value.