index_SYMBOL
!= (not equal operator)! (NOT operator)
in filename globbing
in test command
" (double quote)
# (hash mark)
as comment in script
as root user prompt 2nd
as RPM progress mark
$ (dollar sign)
as user prompt 2nd
preceding shell variable
$# variable
$$ variable
$* variable
$? variable 2nd
$@ variable
$0 variable
$1, ..., $9 variables
- (hyphen)
in file or directory names
in keyboard accelerator
& (ampersand) 2nd
&> redirector
> (greater-than sign) 2nd
>> (redirector)
< (less-than sign) 2nd
<< (redirector)
'; (single quote) 2nd
* (asterisk)
. (dot)
current directory
preceding hidden file or directory name
.. (two dots), parent directory
/ (slash)
in file or directory name
root directory 2nd 3rd 4th
separating directories in pathname
; (semicolon)
= (equal sign)
in boot parameter definitions
in test command
? (question mark)
[] (square brackets)
\ (backslash) 2nd 3rd
\(...\) (grouping expressions)
{} (curly braces)
| (pipe redirector) 2nd 3rd
~ (tilde) 2nd
~+ (current working directory)
~- (previous working directory)
2> redirector
2>&1 redirector
2>> redirector
3D gaming
3D object manipulation, Draw application