Somebody can please give a highlight on this. The problem shows only on Linux(Redhat) not any other unix flavors
:confused:
Linux :
$unset m
$m=`find . -newer rman_padev_20051206195000.out -name "*L0.rman" -exec ls -l {} \; | awk '{ s+=$5 } END{printf("%.0f", s)}'`
$echo $m
7425089536... (0 Replies)
Hi there, I am checking disk spaced used on a box
# df -k | grep dsk | awk {'print $3'}
2055463
20165785
18310202
32274406
I want to somehow add them up but am no quite sure how to do this in a loop. ...i.e
for n in 'df -k | grep dsk | awk {'print $3}'
do
<some adding... (1 Reply)
I have two files as Count1 and Count2. The count contains only one values as 10 and count2 contains only one
values as 20. Now I want third file Count3 as count1+Count2. That is it should contain sum of two file(10+20=30) (3 Replies)
I have the following script in a shell
# The start of a filename
file=$(ls -tr $EMT*.dat | tail -1) # Select the latest file echo $file
file_seq=$( < /u02/sct/banner/bandev2/xxxxxx/misc/EFTSQL.dat)
echo $file_seq
file2 = '$file_seq + 1'
echo $file2
It is reading a file EFTSQL.dat... (3 Replies)
I am needing to create a variable(changing) and assign it a value(changing) ... I am using C-Shell..
Example:
foreach account in ($Accountlist)
set account_connect = "$account/$account_pass"
end
I want to make set account_connect to store various values ? $account_connect did not... (3 Replies)
Hi All,
I am connecting to Oracle DB from UNIX script. Want to capture all dates between start date and end date and store them in file. Once this is done, want to read dates one by one. How to achive this in UNIX and Oracle? Please let me know if you have any idea on the same.
Thanks and... (4 Replies)
Dear all,
I need your help for my question please
I have without header (space separated) and need to add two colomns at the beginning with values
my file look like :
rs1 a t 0.6
rs2 a c 0.3
rs3 t g 0.8
I need to a new file like:
1 100 rs1 a t 0.6
1 100 rs2 a c 0.3
1 100 rs3 t g... (3 Replies)
Hi
cat /tmp/xx.txt
1 4
1 5
1 6
2 1
2 1
2 1
i want to add the values of 2nd column resepect to 1st column values..for 1 in 1st column i need sum of all the values in 2nd column ..pls tell me hw to do it?? (8 Replies)
hey i am using this code to connect to sql , store the value in variable and then
compare it with another variable after some time by executing the same query
but the desired result is not coming
#!/bin/bash
val=$(sqlplus -s rte/rted2@rel76d2 <<ENDOFSQL
set heading off
set feedback off... (11 Replies)
Hi all,
a question for the Perl knowledgeable:
I have use warnings; enabled.
I use something like:
($sec,$min,$hour,$mday,$mon,$year,$wday,$yday,$isdst) = localtime(time);
In the further code I only work with some of the returned variables, as the others I have no need for.
Though the... (1 Reply)
Discussion started by: zaxxon
1 Replies
LEARN ABOUT OSX
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)