topic Re: question about chmod in Operating System - Linux

question about chmod

'chris' — Wed, 22 Aug 2007 11:23:43 GMT

hi everyone

is there any difference between:

# chmod 01777 /var/mail

and

# chmod 1777 /var/mail

Re: question about chmod

TY 007 — Wed, 22 Aug 2007 11:32:46 GMT

Hi Chris,

No difference.

# man chmod
/usr/bin/chmod [-A] [-R] numeric_mode file ...

Absolute permissions can be set by specifying a numeric_mode, an octal number ...

Thanks

Re: question about chmod

Ivan Krastev — Wed, 22 Aug 2007 11:34:35 GMT

No difference.
For chmod 01777 is exact as 1777.

regards,
ivan

Re: question about chmod

Ivan Ferreira — Wed, 22 Aug 2007 11:35:28 GMT

According to "man 2 chmod", only four digits are used in the command. In that case, either command will do the same.

According to this page:

http://www.security-express.com/archives/php/2007-08/0003.html

The 5 digit should cause problems in php "chmod" funcion.

Re: question about chmod

James R. Ferguson — Wed, 22 Aug 2007 13:52:50 GMT

Hi:

Use the 4-digits only. The idea behind prepending a zero is to underscore the fact that the argument is an octal number. However, that is assumed by 'chmod'.

Regards!

...JRF...