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Qiita Conference
Official Event
Official Column
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Organization
PNM > PPM形式からRGBのB成分だけを取り出すワンライナー > tail -n +4 label.ppm | awk '{printf $1 OFS $4 OFS $7 OFS $10 OFS $13 OFS $16 OFS}' > label_blue.txt / tail -n +4 label.ppm | awk -F" " -v OFS=',' '{print $1,$4,$7,$10,$13,$16,""}' | tr -d '\n' > label_blue.txt
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