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mozjpegをgnu parallelで並列に実行

Posted at
cmoz.sh
#!/bin/bash
from="a/"
to="b/"
ex="*.png"
find $from -name $ex | parallel -j+0 "cjpeg -outfile $to{/.}.jpg {}"

#gnu parallel
-j+0: 最大論理コア数で実行
{}: パイプでもらった引数(ex. a/001.png)
{/.}: パイプからもらった引数をファイル名だけにして(/)さらに拡張子も取る(.)(ex. 001)
#そのた
Q. print0とかつけなくていいの?
A. よい。ユニコードだろうがスペースだろうが突っ込めば思ったとおりに'\n'デリミタで動いてくれる。parallelもcjpegも良い子。

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