Meaningless error message when option -e is used without argument

[Jean-Baptiste Lallement]

Binary package hint: chkrootkit

When -e is used without argument the error message doesn't tell much about the error:
$ chkrootkit -e
shift: 2659: can't shift that many

It should display the help of chkrootkit.

Additionally, the documentation of the -e option could be improved by explicitly showing that arguments are required:
-e files/dirs
    Exclude known false positive files/dirs, quoted, space separated.
instead of
-e Exclude known false positive files/dirs, quoted, space separated.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: chkrootkit 0.49-4
ProcVersionSignature: Ubuntu 2.6.35-4.5-generic 2.6.35-rc3
Uname: Linux 2.6.35-4-generic i686
Architecture: i386
Date: Wed Jun 23 11:42:25 2010
EcryptfsInUse: Yes
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: chkrootkit

[Chuck Short (zulcss)]

I was able to reproduce this.