Shell scripts are not compiled — at least, not typically — so the shell only reads what it needs to do the work. That means if your script is careful to exit, you can add as much “garbage ...

Shell scripting is an often forgotten programming environment, relegated to simple automation tasks and little else. In fact, it’s possible to achieve much more complex tasks in the shell.

Simply put, a Shell Script is a program that is run by a UNIX/Linux shell. It is a file that contains a series of commands which are executed sequentially as if they were entered on the command line ...

UNIX administrators, for instance, have been using shell scripting and its powerful capabilities for decades. Scripting can significantly ease the burden of network administration.

In the final script, of course, you won't echo the entered password, as that's not so good from a privacy and security perspective. To test for length, it's easy to use wc -c, but there's a special ...