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"lbzcat a.bz2 > a" is much slower than "lbzcat a.bz2 >! a" #29

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jjqq2013 opened this issue Dec 27, 2019 · 0 comments

jjqq2013 commented Dec 27, 2019 •

edited

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I found an interesting thing,

if a file a does already exist,
then

lbzcat a.bz2 > a
is much much slower than
lbzcat a.bz2 >! a
and
rm -f a; lbzcat a.bz2 > a

Why?

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