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On Sun, Sep 26, 2021 at 8:57 PM Peter Humphrey <peter@××××××××××××.uk> |
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wrote: |
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|
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> Hello list, |
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> |
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> I have an external USB-3 drive with various system backups. There are 350 |
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> .tar |
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> files (not .tar.gz etc.), amounting to 2.5TB. I was sure I wouldn't need |
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> to |
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> compress them, so I didn't, but now I think I'm going to have to. Is there |
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> a |
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> reasonably efficient way to do this? |
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> |
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|
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find <mountpoint> -name \*tar -exec zstd -TN {} \; |
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Where N is the number of cores you want to allocate. zstd -T0 (or just |
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zstdmt) if you want to use all the available cores. I use zstd for |
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everything now as it's as good as or better than all the others in the |
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general case. |
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|
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Parallel means it uses more than one core, so on a modern machine it is |
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much faster. |
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