.lock files

[SIMSN%NUSDISCS.BITNET at cunyvm.cuny.edu]

 -rw-rw----   1 chuase   mail           5 Apr 18 18:06 chuase.lock
 -rw-rw----   1 root     mail          96 Apr 18 17:57 root
 -rw-rw----   1 yanll    mail           5 Apr 18 17:29 yanll.lock
 -rw-rw----   1 simsn    mail           5 Apr 18 17:20 simsn.lock
 drwxrwxr-x   2 root     mail          48 Apr 18 17:16 :saved
 -rw-rw----   1 repo     mail           1 Apr 18 17:06 repo.lock
 -rw-rw----   1 tankuany mail           3 Apr 18 16:02 tankuany.lock
 -rw-rw----   1 lawtongl mail           5 Apr 18 16:01 lawtongl.lock
 -rw-rw----   1 tansiewb mail         581 Apr 18 15:58 tansiewb


 $ cat simsn.lock
 29006 $


 The above is a portion of my /usr/mail and the contents of one of
 the lock files is also shown. Other lock files have different numbers.

 Can anyone please explain .lock files? We have a AT&T 3B4000/15 running
 Sys V 3.1.1 and we use /bin/mail and /usr/bin/mailx

 Thanks.

 Sim


> Sim Ser Ngarn (Jnet%"SIMSN at NUSDISCS")
> National University of Singapore
> Department of Information Systems and Computer Science