Provided by:
cvm_0.76-2ubuntu1_i386 
NAME
cvm-unix
SYNOPSIS
UNIX/POSIX-standard module
CREDENTIALS
Pass phrase
DESCRIPTION
This module uses the POSIX standard getpwnam(3) and crypt(3) APIs to
validate credentials. If the system has either the getuserpw or the
getspnam APIs, they will also be used to locate the encrypted password.
CONFIGURATION VARIABLES
None
SEE ALSO
cvm-pwfile(8), cvm-qmail(8), cvm-sql(8), cvm-vmailmgr(8), cvm-
benchclient(8), cvm-checkpassword(8), cvm-testclient(8)
http://untroubled.org/cvm/cvm.html
cvm-unix(8)