Request:- Could some do a poll of Linux version usage?
I don't know nearly enough about what versions of Open/Free Linux are available.
I was wondering if someone would create a new poll of all the major recent(ish) distros so we can see the percentage of people's preferred distro? I've only ever used Suse and have been very happy with it, but I'm feeling curious to see what other packages have to offer.
I found one poll elsewhere, but it had been running for so long the data would no longer be valid.
hello,
i need a command like "bdf" of HP-UX. ( report number of free disk blocks (Berkeley version) ). it should report inode and file system usage in one line like bdf -i
manpage :
Man Page for bdf (all Section 1m) - The UNIX and Linux Forums
HP-UX command "" report inode and file... (2 Replies)
Hi, new here.
We are attempting to prove that an application will be able to carry IPv6. All is fine with IPv4 but not so much with IPv6. For now, we're just starting to ping between hosts to ensure basic communication.
I'll try to put as much info but of course feel free to ask for more.
... (4 Replies)
Hello,
i`m creating an script that collect`s data from virtual machines about cpu usage and store that data into RRD.
so everything now works fine, but it takes long time if in machine is a lot of virtual`s.
so i want to make my script to collect information with 1 request. at this time... (3 Replies)
Can someone try to compile this older version of xtide (attached) on 64-bit Intel/Linux and upload the xttpd binary? I have a friend who needs an older version up and running because the newer version does not support his required harmonic files.
Thanks! (7 Replies)
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
With so many different flavors of UNIX and Linux available in the world, choosing the best one for yourself, your family, or for your organization can be such an overwhelming and rather difficult decision to make! :eek:
If you were a salesman and you had to decide the best UNIX/Linux distro for... (1 Reply)
Hi,
i need a guide how to write a script which i can do a http request. Let say the request look like below;
http://www.test.com?txid=1&type=service&server=linux
I have a list of "txid" (in *.txt) and need to run all "txid" acordingly. So that mean, every transaction i have to refer "txid"... (7 Replies)
PCAP_GET_SELECTABLE_FD(3PCAP)PCAP_GET_SELECTABLE_FD(3PCAP)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(3PCAP), select(2), poll(2)
5 April 2008 PCAP_GET_SELECTABLE_FD(3PCAP)
