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root@ubuntu:/dpkg_install/archives# dpkg -i ettercap-gtk_1%3a0.7.3-1.2ubuntu4_i386.deb 
(Reading database ... 101163 files and directories currently installed.)
Preparing to replace ettercap-gtk 1:0.7.3-1.2ubuntu4 (using ettercap-gtk_1%3a0.7.3-1.2ubuntu4_i386.deb) ...
Unpacking replacement ettercap-gtk ...
Setting up ettercap-gtk (1:0.7.3-1.2ubuntu4) ...

Processing triggers for menu ...
Processing triggers for man-db ...
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/usr/bin/mandb: can't create index cache directory /var/cache/man/de.UTF-8: Permission denied
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