Swapping two bytes in perl -


i trying swap 2 bytes @ time in file. thinking read in 2 bytes @ time , use reverse switch bytes around. not sure how read 2 bytes @ time in perl. can make suggestion

reading 2 bytes @ time hugely inefficient. should continue read larger blocks @ time , process bytes in buffer.

$buf =~ s/(.)(.)/$2$1/sg;

or

$buf = pack 's<*, unpack 's>*', $buf;

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