Re: How do I deal with this file?

[Robert Elz <kre%munnari.OZ.AU@localhost>]

    Date:        Tue, 30 Jul 2019 10:51:11 +0100
    From:        Chavdar Ivanov <ci4ic4%gmail.com@localhost>
    Message-ID:  <CAG0OUxg7RyeCob8b-bzPUD59rjoGOyOnKDU3-dqQx-6Pwep0fg%mail.gmail.com@localhost>


  | Here there is a file, called autotroll.m4, its contents appear fine.
  |
  | Any attempt to modify the inode of this file fails, no matter the user
  | - and yes, I am trying to do this as root:
  | ....
  | # unlink autotroll.m4
  | unlink: Operation not permitted
  |
  | ktruss shows only EPERM at that moment.
  | .....

Try
	ls -ol autotroll.m4

and then when you see the "uchg" (which seems from your message to
the flag that is being set) there in the output, remove it with

	chflags nouchg autotroll.m4

kre