Syntax Summary

• A command is a sequence of words separated by white space.
• The first word in a command is the operation, the rest are arguments.
• A script is a sequence of commands separated by newlines or semicolons.
• $ causes variable substitution.
• [ ] causes command evaluation and substitution.
• " " quotes white space and semicolons.
• { } quotes all special characters (including newlines).
• \ quotes next character, provides C-like substitutions.
• # for comments (at beginning of command).