Hi all
I have file f1 like this:
Set AM/PM indicator to PM started|14155|
Generate Error Re|7|
Projected Cash Ba|741|
Roll System Date |4|
Projected Cash Balances started|2|
Process Mark To Market started|13429|
Process paydowns started|14189|
Process Fixed Inc|439|
Process Mark To... (3 Replies)
Hi All
I have a file like this
<LText>gvsvdkag<LREC>bdjvdj</LREC>nididyvv</LText>
<LText>gvsvdkag<LREC>bdj
vdj</LREC>nididyvv</LText>
<LText>gvsvdkag<LREC>b
djvdj</LREC>nididyvv</LText>
<LText>gvsvdkag<LREC>bdjvdj</LREC>nididyvv</LText>
How will i change the file to ... (9 Replies)
Hi guys,
i have a big file with the following format.This includes header(H),detail(D) and trailer(T) information in the file.My problem is i have to search for the character "6h" at 14 th and 15 th position in all the records .if it is there i have to write all those records into a... (1 Reply)
Hi
I want to read one row record from a text file.
For eg: I have Sample.txt file with one row of record like
123456768
I want to get the above value from the file and assign it to a variable in my script. Please guide me how to proceed.
Thanks,
Soll (2 Replies)
I'm trying to use Awk to get the id and name fields ($1 and $2) of file1 combined with their corresponding multiline records in file2 that are separated by blank line. Both files are ordered so that the first line of file1 corresponds to the first set of multiline records in file2 and so on.
... (4 Replies)
Dear Experts,
I need to extract specific records from one file which has multiline records.
Input file pattern is:
============
aaaaaaaa
bbbbbbbb
asdf 1234
cccccccc
dddddddd
============
aaaaaaaa
bbbbbbbb
qwer 2345
cccccccc
dddddddd (7 Replies)
I have a loop like
while read i
do
echo "$i"
.
.
.
done < tms.txt
The tms.txt contians data like
2008-02-03 00:00:00
<space>00:00:00
.
.
.
2010-02-03 10:54:32 (2 Replies)
Hi - I'm new to working with multiline records and I'm going nuts trying to do something that seems simple.
Input:
Tue May 1 14:00 Header Record 1 is valid.
Tue May 1 14:00 processing data to 25-Mar-2012 09:00:23.15
Tue May 1 14:03 Header Record 1 is valid.
Tue May 1 14:03 processing data... (4 Replies)
Hi,
I try to read a multiline text from a console and write it to a file using a bash script. I want to end reading from a console if a user types the key twice. I tried this loop:
while read LINE; do
if 2>/dev/null; then
break
fi
echo -e ${LINE} >> $file
done
However, it doesn't... (8 Replies)
Hello,
I have some problem about sed command. I have data which showed in below :
M001 ndle1
M002|bfn|n|bfn|bf ndle1
M003|bfn|n|bf|bf ndle1
M004|bfn|n|bf middle1
M005|bfn|n|bfn|bf middle1
M006|bnf|n|bfn|bf middle1
M007|fn|q|n|bf middle1
The expected... (3 Replies)
Discussion started by: awil
3 Replies
LEARN ABOUT PLAN9
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)