About

special character

See also: special Parameters

Articles Related

List

• the point: Bash - Source - Built-in command
• >, », |, < : What are Redirections in Bash? Example and how-to
• the tilde (~): the user directory home
• Bash - Brace {}
• Bash - Colon (:) Builtin command
• What is a Subshell in Bash?
• Bash - Arithmetic Expression

$

• $?: the exist status
• $$: the PID of the parent process
• 0-9: a positional parameter

Documentation / Reference

• For all dollar, see Positional Parameters and Other Special Parameters