$ sudo aptitude show tmux [sudo] password for me: Package: tmux State: installed Automatically installed: no Version: 1.6-1ubuntu1 Priority: optional Section: admin Maintainer: Ubuntu Developers Architecture: amd64 Uncompressed Size: 528 k Depends: libc6 (>= 2.14), libevent-2.0-5 (>= 2.0.16-stable), libtinfo5 PreDepends: dpkg (>= 1.15.7.2) Conflicts: tmux Description: terminal multiplexer tmux enables a number of terminals (or windows) to be accessed and controlled from a single terminal like screen. tmux runs as a server-client system. A server is created automatically when necessary and holds a number of sessions, each of which may have a number of windows linked to it. Any number of clients may connect to a session, or the server may be controlled by issuing commands with tmux. Communication takes place through a socket, by default placed in /tmp. Moreover tmux provides a consistent and well-documented command interface, with the same syntax whether used interactively, as a key binding, or from the shell. It offers a choice of vim or Emacs key layouts. Homepage: http://tmux.sourceforge.net/ $ sudo aptitude build-dep tmux The following NEW packages will be installed: libevent-core-2.0-5{a} libevent-dev libevent-extra-2.0-5{a} libevent-openssl-2.0-5{a} libevent-pthreads-2.0-5{a} libncurses5-dev libtinfo-dev{a} 0 packages upgraded, 7 newly installed, 0 to remove and 1 not upgraded. Need to get 751 kB of archives. After unpacking 3,455 kB will be used. Do you want to continue? [Y/n/?] n Abort.