A program (binary, or executable) is a file on disk somewhere, in a recognized format. Common formats include ELF on Linux, ...

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.

Shell scripting is one of those skills that are absolutely invaluable on especially UNIX and BSD-based systems like the BSDs, the two zillion Linux distributions as well as MacOS.

After the shell script is written, it is made usable by changing its file status to "executable" with the change mode command (see chmod). Shell scripts are the Unix/Linux counterpart to Windows ...

In this post, we look at scripting basics—at how to get started if you have never built a script before. Identifying the shell Unix and Linux systems today have a number of shells that you can use.

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”.

> ./shtype KSH93 Version M 1993-12-28 r The shtype script deduces this by determining whether your shell can extract substrings from a variable. Korn93 can do this. Korn89 cannot.

For instance, if 20,000 lines through a certain file, the script breaks, instead of re-running the script from the start, tail can be used to read only from the line on which the script failed. There ...