Gao: > Hi, > > I'd like ask a dumb question: I see there are many things in Postfix > which named as pipe(8), smtp(5), lmtp(8). So what is number 5 or 8 mean? > Version number?
The numbers refer to sections in the UNIX programmer's manual. The
convention used in Postfix dates from the late 1970s. I approximate
the convention from 4.2BSD (SunOS and Ultrix): 1=commands, 2=syscalls,
3-libraries, 5=file formats, 8=daemons.
Wietse
