Στις 23-05-2011, ημέρα Δευ, και ώρα 12:17 -1000, ο/η Warren Togami Jr.
έγραψε:
> http://hg.fedorahosted.org/hg/virt-manager/rev/1f781890ea4a
> This is a very similar issue. Notice their kludge to detect nc's
> capabilities.
I'd use something like this instead, in some initialization code like
e.g. ltsp-common-functions:
if LANG=C nc -q 2>&1 | grep -q "option requires an argument"; then
nc_q_param="-q -1"
fi
And then replace the existing "-q-1" with $nc_q_param (unquoted) in all
the nc calls.
Relevant bug report from Debian:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=502188
Output of the nc* tools available in Ubuntu Lucid:
alkisg@alkis:~$ nc.traditional -q
nc.traditional: option requires an argument -- 'q'
nc -h for help
alkisg@alkis:~$ nc.openbsd -q
nc.openbsd: option requires an argument -- 'q'
usage: nc [-46DdhklnrStUuvzC] [-i interval] [-P proxy_username] [-p
source_port]
[-s source_ip_address] [-T ToS] [-w timeout] [-X proxy_protocol]
[-x proxy_address[:port]] [hostname] [port[s]]
alkisg@alkis:~$ busybox nc -q
nc: invalid option -- 'q'
BusyBox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu11) multi-call binary
Usage: nc [-options] hostname port - connect
Options:
-e prog [args] Program to exec after connect (must be last)
-n Don't do DNS resolution
-s addr Local address
-p port Local port
-u UDP mode
-v Verbose (cumulative: -vv)
-w secs Timeout for connects and final net reads
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