libpam-mklocaluser - 0.18 main

When the user logs in for the first time, a local POSIX user account is
created in /etc/passwd and primary group created in /etc/group, and a
local home directory is created in /home.
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This is useful on roaming computers when the password is set up to be
cached by for example libpam-ccreds or sssd to allow login without
network connectivity using the password provided by a network
authentication service like Kerberos or LDAP.
.
Other than the caching mechanisms of libpam-ccreds or libpam-sssd /
libnss-sssd, the libpam-mklocaluser approach makes the LDAP accounts
more persistent on the roaming workstation and robust again credentials
cache deletions and such.
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The pam_mklocaluser PAM module additionally allows for execution of
additional hook scripts when users log in to such a roaming computer for
the first time.