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a fast way to repeat output a byte

Terminal - a fast way to repeat output a byte
ghc -e "mapM_ (\_->Data.ByteString.Char8.putStr (Data.ByteString.Char8.replicate (1024*1024) '\\255')) [1..24]"
2011-04-05 14:28:54
User: MaskRay
a fast way to repeat output a byte

I'm both a one-liner fan and a haskell learner


There are 3 alternatives - vote for the best!

Terminal - Alternatives
tr '\0' '\377' < /dev/zero|dd count=$((<bytes>/512))
2011-04-05 14:26:02
User: cfy
Functions: dd tr
Tags: dd tr

the speed is about 500MB/s on my machine.

i think it's fast enough to output not too many bytes.

while a C program may output 1GB per sencond on my machine.

if the size is not the power of 512,you may change the bs and count in dd.

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