Shell scripting concepts covered in this lesson:

• Generating random data.

• How to automate the creation of a random password.

• The RANDOM shell builtin variable.

• Event designators (shell shortcuts).

• Display the current date and time using the date command in various formats.

• Unix time, POSIX time, and epoch time.

• Checksums and cryptographic hash functions.

• The sha1sum and sha256sum commands.

• Verifying downloads with checksums.

• The head, fold, and shuf commands.

• How to work through pipes. (Data munging, text manipulation, string manipulation.)