What characters are illegal on the filename on iOS or OS X? [closed]

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What characters are illegal on the filename on iOS or OS X?

For example, char "/" is illegal. I need to remove all of them and only them.

Answer 1

Illegal characters on the HFS file system:

• : - illegal char.
• / - it's poor to use it.
• \0 - not sure, but don't use it too.

Answer 2

It is the same as any *nix filesystem. See this post: What characters should be restricted from a Unix file name?