This will make files: bigfile.dat1 ... bigfile.dat15
Most of your problems with 'efficiency' are related to having way too many files in a directory. ls will take a lot of time to return before the loop engages. You should rebuild the directory after you consoildate the files into fifteen big files.
hi,
i am facing a problem in merging two files using awk,
the problem is as stated below,
file1:
A|B|C|D|E|F|G|H|I|1
M|N|O|P|Q|R|S|T|U|2
AA|BB|CC|DD|EE|FF|GG|HH|II|1
....
....
....
file2 :
1|Mn|op|qr (2 Replies)
Hi
i have many sets of files as shown below(here i have shown 2 sets)
basel_aa_20091030.txt
basel_aa_20091130.txt
basel_aa_20091230.txt
basel_bb_20091030.txt
basel_bb_20091130.txt
basel_bb_20091230.txt
from each set of files i need to select the latest updated file(there are... (3 Replies)
Please till me how to stop or to limit some IP which download .rm and .mp3 files for more than 10000 times ...
I have two cases :
1. code 206 up to 20/second 5 GB or more than that ...
2. code 206 up to 20/second but less than 0.5 GB
I used Ddos and mod_evasive20.so
<IfModule... (0 Replies)
I have five directories, dir1 to dir5
for each directory, I have all same number-named folders. There are four types of folders, {1..10}, {20..30}, { 40..50}, {60..70}
Now for each types of folder, I will do the same thing, here is the code
for i in {1..5}
do
cd dir$i
mkdir temp1
for... (5 Replies)
Hi
this is my SQL script
$ wc -l insert_into_customers.sql
85601 insert_into_customers.sqlI wish to cut this file into 9 files each 10000 lines (the last one less)
$ wc -l insert_into_customers_00*.sql
10000 insert_into_customers_001.sql
10000 insert_into_customers_002.sql
... (1 Reply)
Problem Statement:-
I need to search a particular `String Pattern` in around `10000 files` and find the records which contains that `particular pattern`. I can use `grep` here, but it is taking lots of time.
Below is the command I am using to search a `particular string pattern` after... (3 Replies)
Hi,
I am just new to scripting but got to write a complex scipt please help. i need a shell script which can check the list of data listed in a txt doc and see if they belong to any of the groups that are listed in other list file.... (5 Replies)
G'day all,
I'm have tons of image files I need to process, but I don't need to process all of them and it would take a long time to process them all if I don't have to.
The images are arranged in folders like this...
folder1/RawData
folder2/RawData
folder3/RawData
...
folderN/RawData
... (2 Replies)
Hi,
My requirement is,there is a directory location like:
:camp/current/
In this location there can be different flat files that are generated in a single day with same header and the data will be different, differentiated by timestamp, so i need to verify how many files are generated... (10 Replies)
I have three files as an input and I need to rearrange this input to match the rules by which the processing program consumes the data.
My files are:
/tmp$ cat F
# file -1-
FS00|0|zero-zero|
FSTA|0|10|
FSTA|0|12|
FSTA|0|15|
FSTA|0|17|
FS00|3|negative|
FSTA|3|-1|
FS00|5|regular|... (2 Replies)
Discussion started by: migurus
2 Replies
LEARN ABOUT V7
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)