Hi,
Please can someone help to return the array elements from a function. Currently the problem I face is that tempValue stores the value in myValue as a string while I need an array of values to be returned instead of string.
Many Thanks,
Sudhakar
the function called is:
... (5 Replies)
How can I get my array to understand the double-quotes I'm passing into it are to separate text strings and not part of an element? here's what I'm working with...
db2 -v connect to foo
db2 -x "select '\"' || stats_command || '\",' from db2law1.parallel_runstats where tabname = 'BAZ'"
set... (4 Replies)
Hi,
I have an array containing following sample information
@array = qw (chr02 chr02 chr02 chr02 chr02 chr03 chr03 chr04 chr04 chr05 chr05 chr05 chr07 chr07) I need to replace all duplicate entries by an underscore to get the following output@array = qw (chr02 _ _ _ _ chr03 _ chr04 _ chr05 _ _... (4 Replies)
Is there a way to print multiple array elements without iterating through the array using bash?
Can you do something like...
echo ${array}and get all those separate elements from the array? (2 Replies)
Hi I have two arrays :
@arcb= (450,625,720,645);
@arca=(625,645);
I need to remove the elements of @arca from elements of @arcb so that the content of @arcb will be (450,720).
Can anyone sugget me how to perform this operation?
The code I have used is this :
my @arcb=... (3 Replies)
I have a script which takes backup of some configuration files on my server. It does that by using an array which contains the complete path to the files to backup.
It copys the files to a pre defined dir. Each "program" has it's own folder, ex. apache.conf is being copied to /predefined... (7 Replies)
Hi,
I can't find out how to create correct code to get multiplication of each elements of array. Let's say I enter array into command line (2 3 4 5 6 8) and i need output 2*3*4*5*6*8=5760.
I tried this one, but answer is 0.
for i in $@; do
mult=$((mult*i))done
echo "mult: " $mult
... (4 Replies)
Hi everyone, :)
I'm trying to make a simple C program that scans an array of chars to see if its elements are similar.
I can't understand what's wrong. Could you help me to fix this? Here is the code.
Thanks!
#include<stdio.h>
int main() {
int arr;
int i, len;
int flag =... (10 Replies)
Hi
I wanted to print random elements from an array at bash shell
I use the following code, but I always see first element getting printed
#!/bin/bash
c=1
expressions=(pink red white yellow purple)
while ]; do
echo "The value of RANDOM is $RANDOM"
selectedexpression=${expressions}]};... (5 Replies)
Hi All,
need help with reading the array and sum of the array elements.
given an array of integers of size N . You need to print the sum of the elements in the array, keeping in mind that some of those integers may be quite large.
Input Format
The first line of the input consists of an... (1 Reply)
Discussion started by: nishantrefound
1 Replies
LEARN ABOUT OSX
pcap_dispatch
PCAP_LOOP(3PCAP)PCAP_LOOP(3PCAP)NAME
pcap_loop, pcap_dispatch - process packets from a live capture or savefile
SYNOPSIS
#include <pcap/pcap.h>
typedef void (*pcap_handler)(u_char *user, const struct pcap_pkthdr *h,
const u_char *bytes);
int pcap_loop(pcap_t *p, int cnt,
pcap_handler callback, u_char *user);
int pcap_dispatch(pcap_t *p, int cnt,
pcap_handler callback, u_char *user);
DESCRIPTION
pcap_loop() processes packets from a live capture or ``savefile'' until cnt packets are processed, the end of the ``savefile'' is reached
when reading from a ``savefile'', pcap_breakloop() is called, or an error occurs. It does not return when live read timeouts occur. A
value of -1 or 0 for cnt is equivalent to infinity, so that packets are processed until another ending condition occurs.
pcap_dispatch() processes packets from a live capture or ``savefile'' until cnt packets are processed, the end of the current bufferful of
packets is reached when doing a live capture, the end of the ``savefile'' is reached when reading from a ``savefile'', pcap_breakloop() is
called, or an error occurs. Thus, when doing a live capture, cnt is the maximum number of packets to process before returning, but is not
a minimum number; when reading a live capture, only one bufferful of packets is read at a time, so fewer than cnt packets may be processed.
A value of -1 or 0 for cnt causes all the packets received in one buffer to be processed when reading a live capture, and causes all the
packets in the file to be processed when reading a ``savefile''.
(In older versions of libpcap, the behavior when cnt was 0 was undefined; different platforms and devices behaved differently, so code that
must work with older versions of libpcap should use -1, nor 0, as the value of cnt.)
callback specifies a pcap_handler routine to be called with three arguments: a u_char pointer which is passed in the user argument to
pcap_loop() or pcap_dispatch(), a const struct pcap_pkthdr pointer pointing to the packet time stamp and lengths, and a const u_char
pointer to the first caplen (as given in the struct pcap_pkthdr a pointer to which is passed to the callback routine) bytes of data from
the packet. The struct pcap_pkthdr and the packet data are not to be freed by the callback routine, and are not guaranteed to be valid
after the callback routine returns; if the code needs them to be valid after the callback, it must make a copy of them.
RETURN VALUE
pcap_loop() returns 0 if cnt is exhausted, -1 if an error occurs, or -2 if the loop terminated due to a call to pcap_breakloop() before any
packets were processed. It does not return when live read timeouts occur; instead, it attempts to read more packets.
pcap_dispatch() returns the number of packets processed on success; this can be 0 if no packets were read from a live capture (if, for
example, they were discarded because they didn't pass the packet filter, or if, on platforms that support a read timeout that starts before
any packets arrive, the timeout expires before any packets arrive, or if the file descriptor for the capture device is in non-blocking mode
and no packets were available to be read) or if no more packets are available in a ``savefile.'' It returns -1 if an error occurs or -2 if
the loop terminated due to a call to pcap_breakloop() before any packets were processed. If your application uses pcap_breakloop(), make
sure that you explicitly check for -1 and -2, rather than just checking for a return value < 0.
If -1 is returned, pcap_geterr() or pcap_perror() may be called with p as an argument to fetch or display the error text.
SEE ALSO pcap(3PCAP), pcap_geterr(3PCAP), pcap_breakloop(3PCAP)
24 December 2008 PCAP_LOOP(3PCAP)