# insert fileB after line 10 and line 20
otherfile=$(< fileA )
cnt=0
while read line
do
cnt=$(( $cnt + 1 ))
echo "$line"
if [[ $cnt -eq 10 || $cnt -eq 20 ]]; then
echo "$otherfile"
fi
done < fileA > tmpfile
mv tmpfile fileA
This User Gave Thanks to jim mcnamara For This Post:
Hey..
I'm writing a code to download some stuff from Informix database and put it on Xls. It works fine, but I have a problem fitting in a new requirement.
I have currently a file which has information like below.
f_name|Ronnie|Johnson|23.00|
f_sal|Ronnie|Jhonson|4000.00|... (4 Replies)
Hi,
I have two files XXX.dat and YYY.dat and their contents are as follows.
The contents of XXX.dat(The line numbers are just for reference)
1) Mango
2) Banana
3) Papaya
4) Apple
5) Pomegranate
The contents of YYY.dat
1) Custard apple
2) Grape
3) ... (4 Replies)
Hi.I have two files say XXX.dat and YYY.dat
The contents of XXX.dat and YYY.dat are as follows
XXX.dat
Jan
Feb
Mar
Apr
Method 1
{
echo "This is method 1"
}
YYY.dat
Delhi
Culcutta
One (4 Replies)
Hi
I have two files, one is 1.6 GB. I would like to add one extra column of information to the large file at a specific location (after its 2nd column).
For example:
File 1 has two columns more than 1000 rows like this
MM009987 1
File 2 looks like this
MM00098 MM00076 3 4 2 4 2... (1 Reply)
Hello,
Hoping someone can help!
I have a file (fileA) with a potentially different number of | delimited fields the file looks like:
fileA
A|B|C|D|E|F|G|
A|B|C|D|E|F|G|
This file could have 100+ fields and have 2million+ records
I have another file (fileB) which contains an 8 digit... (3 Replies)
Hi Experts,
I have a config file (file1) & a data file (file2) :
- The file1 I want to modify : to replace "2nd fields c7? & m7? from the data from file2,
-The below CPU line fields need to fill by file2's 1st colmns correspoding data.
- The below MEM lines to be replaced by... (3 Replies)
Need your help in appending header(file1 contains header ) to my file2. I am using KSH AIX OS.
I know how to do with taking temporary files.
cat file1 >temp
cat file2 >>temp
mv temp file2
Is there way to append directly to a file in ksh.
I don't find Sed -i option on my... (10 Replies)
Hi,
I have one file with one column and several hundred entries
File1:
NA1
NA2
NA3And now I need to run a command within a mapping aligner tool to insert these sample names into a sequence alignment file (SAM) such that they look like this
@RG ID:Library1 SM:NA1 PL:Illumina ... (7 Replies)
Discussion started by: nans
7 Replies
LEARN ABOUT PLAN9
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)