# What format are the files in /usr/share/doc/ in?

I found a nice wealth of information on some commands that I use in `/usr/share/doc`. Some are in a weird format though with tags such as:

• `\verbatim` and `\endverbatim`
• `\section` and `\endsection`

Any idea what format this is? E.g. of one of the files: `/usr/share/doc/rpm-*/spec`

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Maybe troff? en.wikipedia.org/wiki/Troff –  Zoredache Oct 13 '11 at 22:29
Almost all of the documents on my SL6.1 system are plain text. There are a few which seem to be in some sort of Markup language (lAtEx?). There are even a few in HTML, or PDFs! –  Stefan Lasiewski Oct 13 '11 at 23:05

It's a LaTeX file. The file(1) command is useful for determining a file's type, e.g.:

``````\$ file /usr/share/doc/rpm-4.8.1/*
/usr/share/doc/rpm-4.8.1/builddependencies: ASCII English text
/usr/share/doc/rpm-4.8.1/buildroot:         LaTeX document text
/usr/share/doc/rpm-4.8.1/ChangeLog.bz2:     bzip2 compressed data, block size = 900k
/usr/share/doc/rpm-4.8.1/conditionalbuilds: ASCII English text
/usr/share/doc/rpm-4.8.1/COPYING:           ASCII English text
[...]
/usr/share/doc/rpm-4.8.1/spec:              LaTeX document text
/usr/share/doc/rpm-4.8.1/triggers:          LaTeX document text
/usr/share/doc/rpm-4.8.1/tsort:             LaTeX document text
``````
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Thanks! Any idea how to best view them? –  Belmin Fernandez Oct 14 '11 at 12:29

It looks like LaTeX format

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