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The tar-snapshot-edit utility changes device numbers stored in GNU tar incremental snapshot files. This helps avoid full redump of the file systems after certain system hardware or software upgrades, that change device numbers, without actually changing files. In particular, there are reports that this is necessary when upgrading to a newer version of Linux 2.6.x kernel.

Download and installation

The utility is available for download from GNU tar repository.

Make sure you have Perl installed. Download tar-snapshot-edit, copy it to an appropriate location in your PATH and make sure it has executable bit set. If the full file name of the perl interpreter is not /usr/bin/perl, open tar-snapshot-edit with a text editor of your choice and change the very first line, so that it contains the actual path to the interpreter.


Refer to tar documentation for the detailed discussion of the utility and its usage.

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