Special Characters on Linux

The following tables list the special characters that are allowed or not allowed in the user password on Linux:

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Linux: Special characters allowed in user password (quotes not required)

•

Linux: Special characters allowed in user password (quotes required)

Linux: Special characters allowed in user password (quotes not required)

Character	Name
@	At symbol
#	Hash / Pound sign
%	Percent sign
^	Caret
*	Asterisk
-	Hyphen / Minus
_	Underscore
+	Plus sign
=	Equals sign
[	Left square bracket
]	Right square bracket
{	Left curly brace
}	Right curly brace
:	Colon
,	Comma
.	Period / Full stop
/	Forward slash
?	Question mark
~	Tilde

 

Linux: Special characters allowed in user password (quotes required)

Character	Name
!	Exclamation mark
$	Dollar sign
&	Ampersand
(	Left parenthesis
)	Right parenthesis
|	Vertical bar / Pipe
\	Backslash
;	Semicolon
<	Less-than sign. Must be passed in single quotes (') or double quotes (").
>	Greater-than sign. Must be passed in single quotes (') or double quotes (").
`	Back tick / Grave accent. Must be passed in single quotes (') or double quotes (").
'	Apostrophe / Single quote. Must be passed in double quotes (").
"	Quotation mark / Double quote. Must be passed in single quotes (').