Special Characters

As with the Bourne shell features already covered, scripts:

• can contain filenames and directory names with metacharacters.
• can use semi colons (;) to separate commands on one line.
• can use redirection signs ().
• understand pipes (|).

In addition to the above-mentioned, scripts may also contain C and Bourne shell features.

• '...': Turn off Meaning of Special Characters.
• "...": Turn off Meaning of Special Characters EXCEPT $ and `
• `...`: Use Output as Content of Variable