Learning Red Hat Enterprise Linux and Fedora

!= (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