Sh - Special Characters

special character

See also: special Parameters

• the point: Bash - Source - Built-in command
• >, », |, < : Bash - Redirection
• the tilde (~): the user directory home
• Bash - Brace {}
• Bash - Colon (:) Builtin command
• Bash - Subshell ()
• Bash - Arithmetic Expression

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

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