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— category: usage permalink: /FAQ-filesused date: 2014-06-10 —
# All the files used by this document
When you're sharing a document with someone else (perhaps as part of a co-development cycle) it's as well to arrange that both correspondents have the same set of auxiliary files, as well as the document in question. Your correspondent obviously needs the same set of files (if you use the [`url`](https://ctan.org/pkg/url) package, she has to have [`url`](https://ctan.org/pkg/url) too, for example). But suppose you have a bug-free version of the `shinynew` package but her copy is still the unstable original; until you both realise what is happening, such a situation can be very confusing.
The simplest solution is the LaTeX `\listfiles` command. This places a list of the files used and their version numbers in the log file. If you extract that list and transmit it with your file, it can be used as a check-list in case that problems arise.
Note that `\listfiles` only registers things that are input by the
standard LaTeX mechanisms (`\documentclass`, `\usepackage`,
`\include`, `\includegraphics` and so on).
The `\input` command, as modified by LaTeX and used, with
LaTeX syntax, as:
``` records file details for `mymacros.tex`, but if you use TeX primitive syntax for `\input`, as: ```latex
``` `mymacros.tex` _won't_ be recorded, and so won't listed by `\listfiles` — you've bypassed the mechanism that records its use.
The [`snapshot`](https://ctan.org/pkg/snapshot) package helps the owner of a LaTeX document obtain a list of the external dependencies of the document, in a form that can be embedded at the top of the document. The intended use of the package is the creation of archival copies of documents, but it has application in document exchange situations too.
The `bundledoc` system uses the [`snapshot`](https://ctan.org/pkg/snapshot) to produce an archive (e.g., `tar.gz` or `zip`) of the files needed by your document; it comes with configuration files for use with TeX Live-`Unix` and `MiKTeX`. It's plainly useful when you're sending the first copy of a document.
The `mkjobtexmf` finds which files are used in a
either via the `-recorder` option of TeX, or by using the
(Unix) command `strace` to keep an eye on what TeX is
doing. The files thus found are copied (or linked) to a directory
which may then be saved for transmission or archiving.