# aptitude install dropbear
The following partially installed packages will be configured:
  dropbear
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
Setting up dropbear (2012.55-1) ...
/var/lib/dpkg/info/dropbear.postinst: 66: test: /usr/share/initramfs-tools/conf-hooks.d/cryptsetup: unexpected operator
Restarting Dropbear SSH server: invoke-rc.d: initscript dropbear, action "restart" failed.
dpkg: error processing dropbear (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 dropbear
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install.  Trying to recover:
Setting up dropbear (2012.55-1) ...
/var/lib/dpkg/info/dropbear.postinst: 66: test: /usr/share/initramfs-tools/conf-hooks.d/cryptsetup: unexpected operator
Restarting Dropbear SSH server: invoke-rc.d: initscript dropbear, action "restart" failed.
dpkg: error processing dropbear (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 dropbear