[RndTbl] Help with pv?
Adam Thompson
athompso at athompso.net
Sat Dec 13 00:42:56 CST 2014
Something Trevor said made me think of this:
Host 2:
(nc -l 10001 | pv -c -N one >/dev/null & nc -l 10002 | pv -c -N two
>/dev/null & nc -l 10003 | pv -c -N three >/dev/null & nc -l 10004 | pv
-c -N four >/dev/null)
Host 1:
( pv -c -N one </dev/zero | nc host2 10001 & pv -c -N two </dev/zero |
nc host2 10002 & pv -c -N three </dev/zero | nc host2 10003 & pv -c -N
four </dev/zero | nc host2 10004 )
As long as all the pv instances have the same controlling tty and
process group, which is accomplished by putting the whole thing inside
parentheses ( "(",")" ) the IPC stuff works correctly. It's designed for
parts of a single pipeline yes, but this trick appears to fool pv
adequately well. At least on Linux and OpenBSD this works, not sure
about Solaris.
-Adam
--
-Adam Thompson
athompso at athompso.net
Cell: +1 204 291-7950
Fax: +1 204 489-6515
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