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TAR support in Cisco IOS

Cisco IOS supports the Unix tar format with the archive command. For example, to inspect the contents of the Secure Device Manager (SDM) that is present in Flash memory on most routers, use the archive tar /table flash:sdm.tar command.

You can also use the archive tar /xtract command to extract a tar file (local or external) into a directory (yet again local or external). For example, with the command archive tar /xtract flash:sdm.tar tftp://10.0.0.10 you'd extract the SDM tar archive to a TFTP server.

Note: tar extract cannot create subdirectories on a TFTP server, the directory structure has to be prepared in advance.

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