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入力を複数の名前付きパイプに流して最後に結合する
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| #!/bin/bash | |
| rm -rf f1 f2 | |
| mkfifo f1 | |
| mkfifo f2 | |
| cat $0 | tee >(tac | cat -n > f1) >(cat -n > f2) >/dev/null | |
| paste f1 f2 -d $'\n' |
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