Originally posted by: shibhikkiran

Hello all,

I'm a beginner in AIX, practicing around couple of months.

When shoot the following command, it shows 't' in the permission field.
#ls -ld /tmp
output: drwxrwxrwt (showed first field only)

I want to know what is the purpose of 't' at the end.
I know 'r' stands for read, 'w' for write and 'x' for execute.
Here, I aware of the first 'rwx' sequence is meant for user permission and second 'rwx' sequence is meant for group permission and third sequence is meant for others permission.

Could anyone of you give me your valuable thoughts?

Awaiting your response.

Regrads,
Kiran
chennai

Originally posted by: Srikrishan

When sticky bit is set on a directory only the owner of the file or superuser can delete/rename(delete/change the directory entry) files which are present in that directory.

As you can see /tmp has rwxrwxrwx which allows every user to create files/dirs in /tmp but this also allows all users to delete files from /tmp which can include files from other users also. when sticky bit is added i.e the permissions are "rrwxrwxrwxt" a non-root user will be restricted to delete/rename the files for which he is the owner.

-Sri

Originally posted by: shibhikkiran

Hello sirkrishnan,

Thank you very much for your quick and valuable response.

Have a nice day!

Regards,
Kiran