img title=“I don’t know what’s worse–the fact that after 15 years of using tar I still can’t keep the flags straight, or that after 15 years of technological advancement I’m still mucking with tar flags that were 15 years old when I started.”
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I think GNU tar automatically detects the compression, making
-a
unnecessary in that case.And
-z
.tar -xf foo.tar.{gz,xz,zstd,...}
will work perfectly fine.