uses Unix standard input/output as the interface Copyright (c) 2013 Internet Ini=a=ve Japan Inc. $ pmux --mapper="grep PATTERN" *.log Example: distributed grep files on GlusterFS
IP 21.44.60.29.hQp > 170.73.162.175.58546: . 3523999974:3524001422(1448) ack 3401170238 win 1716 <nop,nop,=mestamp 1070614671 1955062367> packet capture logs (made by tcpdump) extract the most frequently appeared IP address on each file 8344 files, 500K lines/file, total 4 billion lines