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SIGHUP wrapper
This works:
ssh linux.p 'eval `echo $SHELL | grep "/t\{0,1\}csh" > /dev/null && echo setenv PARALLEL_SEQ '$PARALLEL_SEQ'\; setenv PARALLEL_PID '$PARALLEL_PID' || echo PARALLEL_SEQ='$PARALLEL_SEQ'\;export PARALLEL_SEQ\; PARALLEL_PID='$PARALLEL_PID'\;export PARALLEL_PID` ;' tty\ \>/dev/null\ \&\&\ stty\ isig\ -onlcr\ -echo\;perl\ -e\ \'\ use\ IO::Poll\;\ \$SIG\{CHLD\}\ =\ sub\ \{\$done\ =\ 1\}\;\ \$p\ =\ IO::Poll-\>new\;\ \$p-\>mask\(STDOUT,\ POLLHUP\)\;\ \$pid=fork\;\ unless\(\$pid\)\ \{setpgrp\;\ exec\ \$ENV\{SHELL\},\ \"-c\",\ @ARGV\;\ die\ \"exec:\ \$\!\\n\"\}\ \$p-\>poll\;\ kill\ SIGHUP,\ -\$pid\ unless\ \$done\;\ wait\;\ exit\ \(\$\?\&127\ \?\ 128+\(\$\?\&127\)\ :\ 1+\$\?\>\>8\)\ \'\ echo\\\ OK\\\;ls\\\ output_to_STDERR\\\ ;
This blocks (does not finish):
ssh solaris.p 'eval `echo $SHELL | grep "/t\{0,1\}csh" > /dev/null && echo setenv PARALLEL_SEQ '$PARALLEL_SEQ'\; setenv PARALLEL_PID '$PARALLEL_PID' || echo PARALLEL_SEQ='$PARALLEL_SEQ'\;export PARALLEL_SEQ\; PARALLEL_PID='$PARALLEL_PID'\;export PARALLEL_PID` ;' tty\ \>/dev/null\ \&\&\ stty\ isig\ -onlcr\ -echo\;perl\ -e\ \'\ use\ IO::Poll\;\ \$SIG\{CHLD\}\ =\ sub\ \{\$done\ =\ 1\}\;\ \$p\ =\ IO::Poll-\>new\;\ \$p-\>mask\(STDOUT,\ POLLHUP\)\;\ \$pid=fork\;\ unless\(\$pid\)\ \{setpgrp\;\ exec\ \$ENV\{SHELL\},\ \"-c\",\ @ARGV\;\ die\ \"exec:\ \$\!\\n\"\}\ \$p-\>poll\;\ kill\ SIGHUP,\ -\$pid\ unless\ \$done\;\ wait\;\ exit\ \(\$\?\&127\ \?\ 128+\(\$\?\&127\)\ :\ 1+\$\?\>\>8\)\ \'\ echo\\\ OK\\\;ls\\\ output_to_STDERR\\\ ;
It blocks on these platforms (uname -a):
SunOS solaris 5.10 Generic_147147-26 sun4u sparc SUNW,Sun-Fire-V210
IRIX64 irix 6.5 07202013 IP35
AIX aix7 1 7 000ACFDE4C00
Linux centos.polarhome.com 2.6.18-371.6.1.el5 #1 SMP Wed Mar 12 20:03:51 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux
SunOS openindiana 5.11 oi_148 i86pc i386 i86pc
OSF1 tru64.polarhome.com V5.1 2650 alpha
It works on these platforms (uname -a):
Linux debian 2.6.32-5-amd64 #1 SMP Mon Sep 23 22:14:43 UTC 2013 x86_64 GNU/Linux
Linux mandriva.polarhome.com 2.6.33.7-desktop-2mnb #1 SMP Mon Sep 20 18:19:20 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux
GNU hurd 0.5 GNU-Mach 1.4-486/Hurd-0.5 i686-AT386 GNU
NetBSD netbsd.polarhome.com 6.1.3 NetBSD 6.1.3 (GENERIC) i386
MirBSD miros.polarhome.com 10 Kv#10uAF-20110818 GENERIC#1330 i386
OpenBSD openbsd.polarhome.com 4.9 GENERIC#671 i386
QNX qnx 6.5.0 2010/07/09-14:44:03EDT x86pc x86
FreeBSD freebsd.polarhome.com 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Fri May 6 13:20:42 CEST 2011 root@freebsd.polarhome.com:/usr/obj/usr/src/sys/POLARHOME amd64
Linux raspberrypi 3.2.27+ #307 PREEMPT Mon Nov 26 23:22:29 GMT 2012 armv6l GNU/Linux
SCO_SV scosysv 5 6.0.0 i386
UnixWare unixware 5 7.1.4 i386 x86at SCO UNIX_SVR5
Linux suse 3.4.63-2.44-desktop #1 SMP PREEMPT Wed Oct 2 11:18:32 UTC 2013 (d91a619) x86_64 x86_64 x86_64 GNU/Linux
Linux redhat.polarhome.com 3.9.10-100.fc17.x86_64 #1 SMP Sun Jul 14 01:31:27 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
Linux ubuntu 3.2.0-64-generic #97-Ubuntu SMP Wed Jun 4 22:04:21 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
@ole-tange
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ole-tange commented Jun 21, 2014

Centos should be moved to working.

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