Linux Permissions Sticky bits

Question

Can someone explain me what is a sticky bit for a file permission and how to set it? Thanks

Answer 1

You might have come across read, write and execute permission for a file. Similar to this, there is another permission called sticky bit. If a file is assigned with a sticky bit, then only that owner can delete that file even though other users have write permission. 

You can assign sticky bit as follows:

$ chmod 1777 <filename>

Here, the digit 1 indicates the sticky bit

or you can assign it like this:

$ chmod +t <filename>