Display permissions in octal format

venkatesht · #1 (**permalink**) 02-12-2009

Hi,

Is there any way to display the permissions in octal format rather than "rwxrwxrwx" format.

I have a file and i want to see the permissions in octal format. Please help.

radoulov · #2 (**permalink**) 02-12-2009

Code:

perl -e'printf "%o\n",(stat shift)[2]' filename

supercops · #3 (**permalink**) 02-12-2009

Quote:

Originally Posted by radoulov

Code:

perl -e'printf "%o\n",(stat shift)[2]' filename

Okay this is working .

i checked one file with permissions -rw-r--r-- and this code is showing it as 100644.

Can any one explain what 100 means here ??

frank_rizzo · #4 (**permalink**) 02-12-2009

you need to add the bitwise AND

Code:

perl -e'printf "%o\n",(stat shift)[2] & 07777'

from the perldoc

Quote:

Because the mode contains both the file type and its
permissions, you should mask off the file type portion and
(s)printf using a "%o" if you want to see the real permissions.

radoulov · #5 (**permalink**) 02-13-2009

Quote:

Originally Posted by frank_rizzo

you need to add the bitwise AND [...]

Right,
thanks for the correction!

venkatesht · #6 (**permalink**) 02-13-2009

Thanks a lot...

perl -e'printf "%o\n",(stat shift)[2] & 07777' ---- This is working.

But i donno perl. Is there anyway to achieve the same in unix.

zaxxon · #7 (**permalink**) 02-13-2009

On many Unix/Linuxes there is perl basically installed. Did you try it?

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