sticky bit

The most common use of the sticky bit today is on directories. When the sticky bit is set, only the item’s owner, the directory’s owner, or the superuser can rename or delete files. Without the sticky bit set, any user with write and execute permissions for the directory can rename or delete contained files, regardless of owner.

Turn the sticky bit on the directory by using +t flag of chmod command. Remove it using -t

chmod +t allAccess/

# ls -ld allAccess/
drwxrwxrwt 2 josh josh 4096 Oct 24 16:19 allAccess/