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Special Characters
| Character | Meaning or Use |
|---|---|
newline space tab |
Word separators |
; |
Command separator |
& |
Background execution |
( ) |
Command grouping (subshell) |
{ } |
Command block |
| > < & |
Redirections |
* ? [ ] ~ ! |
Filename metacharacters |
` |
Command substitution |
$ |
Variable (or command) substitution |
# |
Comment |
\ " ' |
Escape or quote other characters |
