\label{Guts_User_Dir}

Every user in the system has one library server, which is their home
server. It stores the authoritative copy of all of their records.
Internally, this data is stored in a directory

\texttt{/home/httpd/lonUsers/}\texttt{\emph{domain}}\texttt{/}\texttt{\emph{firstChar}}\texttt{/}\texttt{\emph{secondChar}}\texttt{/}\texttt{\emph{thirdChar}}\texttt{/}\texttt{\emph{login}}

for example, for {}``smith'' at {}``msu'':

\texttt{/home/httpd/lonUsers/msu/s/m/i/smith/}

%
\begin{figure}
\begin{lyxcode}
\#>~ls~-alF~/home/httpd/lonUsers/msu/k/o/r/kortemey



-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~13006~May~15~12:21~activity.log

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~12413~Oct~26~~2000~coursedescriptions.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~11361~Oct~26~~2000~coursedescriptions.hist

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~13576~Apr~19~17:45~critical.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~~1302~Apr~19~17:45~critical.hist

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~13512~Apr~19~17:45~email\_status.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~~1496~Apr~19~17:45~email\_status.hist

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~12373~Apr~19~17:45~environment.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~~~169~Apr~19~17:45~environment.hist

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~12315~Oct~25~~2000~junk.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~~1590~Nov~~4~~1999~junk.hist

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~23626~Apr~19~17:45~msu\_12679c3ed543a25msul1.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~~3363~Apr~19~17:45~msu\_12679c3ed543a25msul1.hist

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~17242~Nov~13~~2000~msu\_1827338c7d339a3msul1.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~~1986~Nov~13~~2000~msu\_1827338c7d339a3msul1.hist

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~18497~Dec~21~11:25~msu\_1827338c7d339b4msul1.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~~3801~Dec~21~11:25~msu\_1827338c7d339b4msul1.hist

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~12470~Apr~19~17:45~nohist\_annotations.db

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~13395~Nov~15~~2000~nohist\_bookmarks.db

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~104264~Apr~19~17:45

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~nohist\_calculatedsheets\_msu\_12679c3ed543a25msul1.db

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~13248~Apr~~5~17:18

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~nohist\_calculatedsheets\_msu\_1827338c7d339b4msul1.db

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~~12568~Oct~28~~2000~nohist\_coursedescriptions.db

-rw-r-{}-{}-{}-{}-~~~1~www~~~~~~users~~~~~~765954~Apr~19~17:45~nohist\_email.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~710631~Apr~19~17:45~nohist\_email.hist

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~~~~13~Apr~19~17:45~passwd

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~12802~May~~3~13:08~roles.db

-rw-r-{}-r-{}-~~~1~www~~~~~~users~~~~~~~~1316~Apr~12~16:05~roles.hist
\end{lyxcode}

\caption{Sample user directory listing}
\end{figure}
Files ending in \texttt{.db} are GDBM files, files ending in \texttt{.hist}
are logs of entries to these files. Filenames starting with \texttt{nohist}
do not keep history files. \texttt{passwd} stores the login mechanism
and password (if applicable).

\texttt{environment} stores name-value pairs that are automatically
added to the session environment at login time, for example the full
name, etc.

\texttt{roles} stores the user's roles.

\texttt{critical}, \texttt{nohist\_email}, and \texttt{email\_status}
are used by the messaging mechanisms

Files with a course-ID as name, for example \texttt{msu\_12679c3ed543a25msul1.db},
store performance data for that student in the course, as stored by
\texttt{store} and \texttt{restore} in \texttt{lonnet}.

Other files are caches, for example for previously calculated spreadsheets,
etc.