Sticky bit - HPUX

Sticky bit - HPUX

If the sticky bit is set on a directory then files inside the dir will be renamed/removed only by owner of the file; the owner of the dir or the superuser.

The classic example is /tmp.

$ ls -ld /tmp
drwxrwxrwt  25 bin        bin          16384 Dec  3 09:54 /tmp

How to set sticky bit:

$ ls -ld learn
drwx------   2 kiran      users           96 Dec  3 10:03 learn

$ chmod +t learn

or
$ chmod 1700 learn

$ ls -ld learn
drwx-----T   2 kiran      users           96 Dec  3 10:03 learn

How to unset sticky bit:

$ chmod -t learn

or

$ chmod 0700 learn


if 4000 = set uid  ---> directories with set Gid permission will force all files and sub-directories created in them to be owned by the directory group and not the group of the user creating the 
file.
2000 = set Gid  --> setuid permission set on a directory is ignored on UNIX. Set UID allows an executable to be run with the privilages of the executables owner.

Thanks...

Kiran Jadhav

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