Hi,
I have to sql queries like
select sno,sname from temptable;
select deptno,dname from depttable;
In excel i want to specify the column number to which my output should be displayed.
please help me in this...
thanks in advance... (6 Replies)
Hi Everyone,
I need a shell/perl script to bring selected columns from all the files located in a directory and place them in a new file side by side.
File1:
a b c d
2 3 4 5
f g h i
..........
File2:
I II III IV
w x y z
..............
and so on many files are there...... (8 Replies)
I have 2 text files, both have one simple, single column. The 2 files might be the same length, or might not, and if not, it's unknown which one would be longer.
For this example, file1 is longer:
---file1
Joe
Bob
Mary
Sally
Fred
Elmer
David
---file2
Tomato
House
Car... (3 Replies)
I have installed WAMPSERVER 2.0 on my windows vista x64 system but still am having issues with getting the webserver to be seen outside my local network. It is working fine within my local network.
Been through several setup tutorials so far, no dice still.
For testing purposes I have... (1 Reply)
Hi I'm trying to compare 3 or more files based on similar values and outputting them into 3 columns.
For example:
file1
ABC
DEF
GHI
file2
DEF
DER
file3
ABC
DER
The output should come out like this
file1 file2 file3
ABC ABC (4 Replies)
I have about 100s of files of type text in a known directory. I want to merge all files side by side. Number of lines in all the files will remain same.
For example file1 contains
cat
dog
File 2 contains
rat
mat
Output file should be
cat rat
dog mat
Using awk I was able to... (5 Replies)
Hi,
I am looking for a sed/awk script to join two large (~300 M) single column files (one is sorted and the other is not sorted) side-by-side. I have a shell script but its taking ages to do the task so looking for an optimized fast solution.
The two files look like:
File1 (sorted)
a1... (1 Reply)
Hi everyone,
I need to merge two files side by side
The files look something like this:
HOSTNAME
fishtornado-K52F 127.0.1.1
UPTIME
20:17:01 up 2:19, 3 users,
load average: 0.00, 0.04, 0.05
DISK USAGE
(Size/Used/Avail/Use%)
29G 6.5G 21G 25%
RUN QUEUE
PID COMMAND USER ... (4 Replies)
I have 8 .csv files with 16 columns and "n" rows with no Header. I want to parse each of these .csv and get column and put the data into a new.csv. Once this is done, the new.csv should have 16 columns (2 from each input.csv) and "n" rows.
Now, I want to just take the average of Column from... (3 Replies)
Discussion started by: Zam_1234
3 Replies
LEARN ABOUT DEBIAN
pcap_loop
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)