Setting up passwd (1:4.1.4.2+svn3283-3ubuntu5.1) ...
/var/lib/dpkg/info/passwd.postinst: line 19: /usr/local/bin/getent: No such file or directory
groupadd: group 'shadow' already exists
Group ID 42 has been allocated for the shadow group.  You have either
used 42 yourself or created a shadow group with a different ID.
Please correct this problem and reconfigure with dpkg --configure passwd''.

Note that both user and group IDs in the range 0-99 are globally
allocated by the Debian project and must be the same on every Debian
system.
dpkg: error processing passwd (--configure):
 subprocess installed post-installation script returned error exit status 1