oh geez
the guilty party and the ones that just look guilty all the time…
illegal characters and not-so-illegal characters
A filename cannot contain any of the following characters:
\ / : * ? " < > |
...
Characters that are valid for naming files, folders, or shortcuts include any combination of letters (A-Z) and numbers (0-9), plus the following special characters:
^ Accent circumflex (caret)
& Ampersand
' Apostrophe (single quotation mark)
@ At sign
{ Brace left
} Brace right
[ Bracket opening
] Bracket closing
, Comma
$ Dollar sign
= Equal sign
! Exclamation point
- Hyphen
# Number sign
( Parenthesis opening
) Parenthesis closing
% Percent
. Period
+ Plus
~ Tilde
_ Underscore
full article at serverfault
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