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On 06/17/2013 04:19 PM, Diego Elio Pettenò wrote: |
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> On 17/06/2013 17:54, Rick "Zero_Chaos" Farina wrote: |
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>> I make all my files with "tar cJf" |
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>> |
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>> zero@ozzie ~ % file /usr/portage/distfiles/gr-osmosdr-0.0.2.tar.xz |
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>> /usr/portage/distfiles/gr-osmosdr-0.0.2.tar.xz: XZ compressed data |
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> |
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> cJ with _current_ tar will generate XZ |
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> cJ with _past_ tar could generate lzma |
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> xJ with _current_ tar will extract both XZ and lzma |
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> zJ with _past_ tar will only extract lzma |
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> |
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> |
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tar for the last several years properly and automatically detects the |
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format of the input using just 'x'. This is true for gnu and bsd tar |
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which should cover all of gentoo. We should be passing "tar xf" to |
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extract things unless we want to hijack the decompression command like |
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is possible in portage with BZIP2_COMMAND=lbzip2 in which case we want |
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to pass "tar -I $BZIP2_COMMAND -xf" or (not yet in portage) "tar -I pixz |
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- -xf". Some good examples of how this are handled are in catalyst but |
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I'll let dolson talk about his own work as he is much more qualified |
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than I am. |
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|
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- -Zero |
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