\input{include/4/tail}
\input{include/4/tar}
\input{include/4/tar_(tarball)}
\input{include/4/terminal}
\input{include/4/tex}
\input{include/4/tldr}
\input{include/4/tmp}
\input{include/4/top}
\input{include/4/touch}
\input{include/4/troff}
\input{include/4/Tux}
\input{include/4/Ubiquity}
\input{include/4/Ubuntu}
\input{include/4/uname}
\input{include/4/Unity}
\input{include/4/Unix}
\input{include/4/unix_principle}
\input{include/4/unzip}
\input{include/4/update}
\input{include/4/useradd}
\input{include/4/userdel}
\input{include/4/usr}
\input{include/4/var}
\input{include/4/VI_(vi)}
\input{include/4/VIM}
\input{include/4/wget}
\input{include/4/which}
\input{include/4/window_manager}
\input{include/4/working_directory}
\input{include/4/X_(X-11,_X-Windows)}
\input{include/4/xdvi}
\input{include/4/Xfce}
\input{include/4/xpdf}
\input{include/4/Xubuntu}
\input{include/4/zip}