shadowconfig uses "pwck -p" and "grpck -p" which aren't actually supported

[Thomas Bushnell, BSG]

/sbin/shadowconfig from the passwd package uses "pwck -p" and "grpck -p". On some other Linux systems, the -p flag to these programs says to silently fix problems found in those files.

But the Ubuntu Lucid versions do not actually do that. The Ubuntu Lucid versions ignore the -p option, and then go ahead and prompt for confirmation before making changes.

This can be dangerous at install time. If the install image has problems in the group or passwd files (for example, mention of an unknown user in the group file), then finish-install's postinst will call 06user-setup, which calls user-setup-apply, which calls shadowconfig. When that prompts for input, the install will hang.

This with passwd version 1:4.1.4.2-1ubuntu2.2, which includes shadowconfig, grpck, and pwck.

[Thomas Bushnell, BSG (tbushnell)]

[Not sure why launchpad is insisting on labelling this package "shadow", but on lucid it's "passwd".]

[Thomas Bushnell, BSG (tbushnell)]

Oh, that's the source package name.

This bug is also in the Debian stable version of the package as well.

[Thomas Bushnell, BSG (tbushnell)]

Reported to Debian bts as http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=638263.

[Mathew Hodson (mhodson)]

This should be fixed in Trusty and later.