/var/lib/dpkg/info/passwd.postinst: 21: grep: not found
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 package passwd (--configure):
installed passwd package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
passwd
E: Sub-process /usr/bin/dpkg returned an error code (1)
