09-02-2018
9 More Discussions You Might Find Interesting
1. UNIX Desktop Questions & Answers
Hi,
How do i check the GNU C Complier my system is running?
thanks
jennifer (2 Replies)
Discussion started by: jennifer
2 Replies
2. UNIX for Dummies Questions & Answers
I have a process that spits out a file called sqlplus.out, here is what the result looks like:
Currently the value you see is zero, what I need to do is perform an action if that value is non-zero, so how do I check that value in an if statement? If it helps at this moment in development the... (6 Replies)
Discussion started by: philplasma
6 Replies
3. AIX
consider on day1, in PVCS repository we have java files like a.java,b.java with version revision 1.0, through ANT build script we have compiled and created an ear,named c.ear in AIX build server.we have transfered this ear from build server to portal server through FTP using KSHELL.
consider... (0 Replies)
Discussion started by: kareemaashik
0 Replies
4. Solaris
i have a program writing in PRO C which currently running in unix version 8 tie with oracle 8i, but in the future company gonna migrate this OS to version 9.
Anything i have to prepare for my PRO C program to run in unix version 9? or anything would that impact my program couldn't run well?
what... (2 Replies)
Discussion started by: lsy
2 Replies
5. UNIX for Advanced & Expert Users
Would like to confirm the ff. I got confused actually with the version I needed to download that will work on glassfish 3.0.1
a. Debian Squeeze (HP DL360). Need to use java version6
On Debian, I did apt-get install sun-java6-jdk. So when I check it's
java version "1.6.0_22"
Java(TM) SE... (1 Reply)
Discussion started by: lhareigh890
1 Replies
6. SCO
Hi, (i'm sorry for my english)
I'm a problem on boot sco unix 5.0.5 open server.
this stop at "Checking protected password and checking subsystem databases"
(See this image )
I'm try this:
1) http://www.digipedia.pl/usenet/thread/50/37093/#post37094
2) SCO: SCO Unix - Server hangs... (9 Replies)
Discussion started by: buji
9 Replies
7. Shell Programming and Scripting
How to copy a file from directroy/ prior version to the directory/ new version automatically. (4 Replies)
Discussion started by: roy1912
4 Replies
8. AIX
Hi,
Below is output of lslpp command.
bash-3.00# lslpp -L | grep xlC
xlC.aix50.rte 11.1.0.1 C F XL C/C++ Runtime for AIX 5.3
xlC.cpp 9.0.0.0 C F C for AIX Preprocessor
xlC.msg.en_US.cpp 9.0.0.0 C F C for AIX... (2 Replies)
Discussion started by: manoj.solaris
2 Replies
9. Red Hat
Guys,
How to find OS version and firmware version in LINUX?
Like in AIX.
uname -a will show me the version 5.3, 6.1,7.1.
lsmcode -c will show me - system firmware image as SF240_417.
What are the similar commands in Linux.
I checked uname -a and cat /etc/release.
uname... (1 Reply)
Discussion started by: ElizabethPJ
1 Replies
LEARN ABOUT FREEBSD
pcap_get_selectable_fd
PCAP_GET_SELECTABLE_FD(3) Library Functions Manual PCAP_GET_SELECTABLE_FD(3)
NAME
pcap_get_selectable_fd - get a file descriptor on which a select() can be done for a live capture
SYNOPSIS
#include <pcap/pcap.h>
int pcap_get_selectable_fd(pcap_t *p);
DESCRIPTION
pcap_get_selectable_fd() returns, on UNIX, a file descriptor number for a file descriptor on which one can do a select() or poll() to wait
for it to be possible to read packets without blocking, if such a descriptor exists, or -1, if no such descriptor exists. Some network
devices opened with pcap_create() and pcap_activate(), or with pcap_open_live(), do not support select() or poll() (for example, regular
network devices on FreeBSD 4.3 and 4.4, and Endace DAG devices), so -1 is returned for those devices.
Note that in:
FreeBSD prior to FreeBSD 4.6;
NetBSD prior to NetBSD 3.0;
OpenBSD prior to OpenBSD 2.4;
Mac OS X prior to Mac OS X 10.7;
select() and poll() do not work correctly on BPF devices; pcap_get_selectable_fd() will return a file descriptor on most of those versions
(the exceptions being FreeBSD 4.3 and 4.4), but a simple select() or poll() will not indicate that the descriptor is readable until a full
buffer's worth of packets is received, even if the read timeout expires before then. To work around this, an application that uses
select() or poll() to wait for packets to arrive must put the pcap_t in non-blocking mode, and must arrange that the select() or poll()
have a timeout less than or equal to the read timeout, and must try to read packets after that timeout expires, regardless of whether
select() or poll() indicated that the file descriptor for the pcap_t is ready to be read or not. (That workaround will not work in FreeBSD
4.3 and later; however, in FreeBSD 4.6 and later, select() and poll() work correctly on BPF devices, so the workaround isn't necessary,
although it does no harm.)
Note also that poll() doesn't work on character special files, including BPF devices, in Mac OS X 10.4 and 10.5, so, while select() can be
used on the descriptor returned by pcap_get_selectable_fd(), poll() cannot be used on it those versions of Mac OS X. Kqueues also don't
work on that descriptor. poll(), but not kqueues, work on that descriptor in Mac OS X releases prior to 10.4; poll() and kqueues work on
that descriptor in Mac OS X 10.6 and later.
pcap_get_selectable_fd() is not available on Windows.
RETURN VALUE
A selectable file descriptor is returned if one exists; otherwise, -1 is returned.
SEE ALSO
pcap(3), select(2), poll(2)
22 July 2011 PCAP_GET_SELECTABLE_FD(3)