file permission 000 - UNIX for Dummies Questions & Answers

zedex · #1 (**permalink**) 12-02-2007

hi all
i was reading some questions related to file permission if file has 000 permission then who can read the file ?

i think no one can read the file.
correct me if i am wrong

porter · #2 (**permalink**) 12-02-2007

Quote:

Originally Posted by zedex

i think no one can read the file.

root can read and write it. It would not surprise me if root could execute it as well.

mvictorvijayan · #3 (**permalink**) 12-02-2007

Yes you are correct. If we make the file permission as 000. No one can Read from/Write into the file. But the owner of the file can change the permission accordingly, so that owner/everyone can read/write the file.

porter · #4 (**permalink**) 12-03-2007

Quote:

Originally Posted by mvictorvijayan

If we make the file permission as 000. No one can Read from/Write into the file.

root is not restricted

Code:

# echo fred >banana
# chmod 000 banana
# ls -ld banana
----------  1 root  wheel  5 Dec  3 21:22 banana
# cat banana
fred

prowla · #5 (**permalink**) 12-03-2007

root can read/write the file, but can't execute it.

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