I tried the apt-offline version 1.5 (on a Xubuntu 14.04.1) but nothing changed.
$ LANG="C" apt-cache policy apt apt: Installed: 1.0.1ubuntu2.6 Candidate: 1.0.1ubuntu2.6
$ LANG="C" apt-cache policy apt-offline apt-offline: Installed: 1.5 Candidate: 1.5
$ LANG="C" apt-get -s dselect-upgrade E: Command line option 's' [from -s] is not known.
$ LANG="C" apt-get --dry-run dselect-upgrade E: Command line option --dry-run is not understood
$ LANG="C" apt-get --recon dselect-upgrade E: Command line option --recon is not understood
$ LANG="C" apt-get --no-act dselect-upgrade E: Command line option --no-act is not understood
$ LANG="C" apt-get --simulate dselect-upgrade E: Command line option --simulate is not understood
$ LANG="C" apt-get --just-print dselect-upgrade E: Command line option --just-print is not understood
I tried the apt-offline version 1.5 (on a Xubuntu 14.04.1) but nothing changed.
$ LANG="C" apt-cache policy apt
apt:
Installed: 1.0.1ubuntu2.6
Candidate: 1.0.1ubuntu2.6
$ LANG="C" apt-cache policy apt-offline
apt-offline:
Installed: 1.5
Candidate: 1.5
$ LANG="C" apt-get -s dselect-upgrade
E: Command line option 's' [from -s] is not known.
$ LANG="C" apt-get --dry-run dselect-upgrade
E: Command line option --dry-run is not understood
$ LANG="C" apt-get --recon dselect-upgrade
E: Command line option --recon is not understood
$ LANG="C" apt-get --no-act dselect-upgrade
E: Command line option --no-act is not understood
$ LANG="C" apt-get --simulate dselect-upgrade
E: Command line option --simulate is not understood
$ LANG="C" apt-get --just-print dselect-upgrade
E: Command line option --just-print is not understood