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Extracting files from archives can overwrite files that already exist. If you receive an archive from an untrusted source, you should make a new directory and extract into that directory, so that you don't have to worry about the extraction overwriting one of your existing files. For example, if `untrusted.tar' came from somewhere else on the Internet, and you don't necessarily trust its contents, you can extract it as follows:
$ mkdir newdir $ cd newdir $ tar -xvf ../untrusted.tar
It is also a good practice to examine contents of the archive before extracting it, using `--list' (`-t') option, possibly combined with `--verbose' (`-v').
This document was generated on July, 28 2014 using texi2html 1.76.