nohup sort -k1 -n -t$'\t' ./bigfile.16 -o./test/bigfile.16.ok &
nohup sort -k1 -n -t$'\t' ./bigfile.16 -o./test/bigfile.16.ok &
nohup sort -k1 -n -t$'\t' ./bigfile.16 -o./test/bigfile.16.ok &nohup sort -k1 -n -t$'\t' ./bigfile.16 -o./test/bigfile.16.ok &
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