10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi i have installed redhat os recently in my Pc.
so i have window 7 on c: drive and redhat on d: drive.
I need to learn unix ksh.
Can anyone help me how to install ksh on redhat .i dont have ksh , can you tell me how to download ksh and how to install . (1 Reply)
Discussion started by: Venkatesh1
1 Replies
2. Red Hat
Hi Guys ,
I am new to Linux enviornment , I have purchased Huawei 355 Modem as they specify it works with linux enviornment but Not sure how to install it , when ever I try to install I am getting error , below is the error message
Error Message : Install NDIS driver failed.
The... (4 Replies)
Discussion started by: DarkLegends
4 Replies
3. Red Hat
Hi,
I have red hat linux installed .
then ,I want to install win XP in dual boot ..
How , any advice in detailed ??/ (0 Replies)
Discussion started by: chuikingman
0 Replies
4. UNIX for Dummies Questions & Answers
Hi Gurus of UNIX, I has a problem when I try to install a packet in my virtual box. (I install solaris in it)
Any want can help whith it: The problem is the following
# pkgadd -d wireshark-1.2.10-sol10-x86-local
The following packages are available:
1 SMCwires wireshark
... (5 Replies)
Discussion started by: andresguillen
5 Replies
5. Red Hat
Hi everyone,
The machine, I can install RHEL 4.5 but i can't install 5.3 version. ( All by CD DVD)
Server has a SAS PCI-Express LSI 3081E Host Bus Adapter for 2 local drives.
When i install 4.5 it can recognize the LSI Raid Volume but with 5.3 it said "No driver found"
"Unable to find... (4 Replies)
Discussion started by: tien86
4 Replies
6. Red Hat
Hi all,
I am trying to install UVFS 2.0.3 in redhat 5.4 64bit.. This is required by teamsite 6.7.1.. When I run gmake, it gives me error /usr/bin/gcc -g -O3 -Wall -I. -c -o uvfs_signal.o uvfs_signal.cc
gcc: error trying to exec 'cc1plus': execvp: No such file or directory
gmake: * Error... (0 Replies)
Discussion started by: Makri
0 Replies
7. Red Hat
Hi,
There are two systems:
(1) HP server under RedHat Linux with CD drive.
(2) Notebook under Windows Vista with DVD drive.
Now I want to install Suse Linux on the HP server, but the installation media is a DVD. How can I do it?
Thank you much in advance! (3 Replies)
Discussion started by: aixlover
3 Replies
8. AIX
Hii everyone,
I am trying to install RHEL5 on system p Power 5-510 series box through installable CD's. Machine boots from CD and I receive boot prompt without any issue. After this when i press "Enter" tab, it starts loading Kernel and throws below error:-
Also LED code i am receiving is... (6 Replies)
Discussion started by: Shrek
6 Replies
9. Programming
One of my software should be compiled by fortran 90 under liunx enviroment. I have installed Redhat 7.2, but I don't know where is the free software of fortran 90.
Is there anyone have this kind of knowlege?
Thank you!:confused: http://qhome.51.net (1 Reply)
Discussion started by: wu_chuanjie
1 Replies
10. UNIX for Dummies Questions & Answers
I want to download redhat 7.3 and came to this download mirror: ftp://carroll.cac.psu.edu/pub/linux/distributions/redhat/redhat/redhat-7.3-en/iso/i386/
I was hoping thats the right dir, cuz i already downloaded all the iso's in there, but could someone tell me what the difference between... (7 Replies)
Discussion started by: stealthdestroyr
7 Replies
MERGECAP(1) The Wireshark Network Analyzer MERGECAP(1)
NAME
mergecap - Merges two or more capture files into one
SYNOPSIS
mergecap [ -a ] [ -F <file format> ] [ -h ] [ -s <snaplen> ] [ -T <encapsulation type> ] [ -v ] -w <outfile>|- <infile> [<infile> ...]
DESCRIPTION
Mergecap is a program that combines multiple saved capture files into a single output file specified by the -w argument. Mergecap knows
how to read libpcap capture files, including those of tcpdump, Wireshark, and other tools that write captures in that format.
By default, Mergecap writes the capture file in libpcap format, and writes all of the packets from the input capture files to the output
file.
Mergecap is able to detect, read and write the same capture files that are supported by Wireshark. The input files don't need a specific
filename extension; the file format and an optional gzip compression will be automatically detected. Near the beginning of the DESCRIPTION
section of wireshark(1) or http://www.wireshark.org/docs/man-pages/wireshark.html <http://www.wireshark.org/docs/man-pages/wireshark.html>
is a detailed description of the way Wireshark handles this, which is the same way Mergecap handles this.
Mergecap can write the file in several output formats. The -F flag can be used to specify the format in which to write the capture file,
mergecap -F provides a list of the available output formats.
Packets from the input files are merged in chronological order based on each frame's timestamp, unless the -a flag is specified. Mergecap
assumes that frames within a single capture file are already stored in chronological order. When the -a flag is specified, packets are
copied directly from each input file to the output file, independent of each frame's timestamp.
The output file frame encapsulation type is set to the type of the input files if all input files have the same type. If not all of the
input files have the same frame encapsulation type, the output file type is set to WTAP_ENCAP_PER_PACKET. Note that some capture file
formats, most notably libpcap, do not currently support WTAP_ENCAP_PER_PACKET. This combination will cause the output file creation to
fail.
OPTIONS
-a Causes the frame timestamps to be ignored, writing all packets from the first input file followed by all packets from the second input
file. By default, when -a is not specified, the contents of the input files are merged in chronological order based on each frame's
timestamp.
Note: when merging, mergecap assumes that packets within a capture file are already in chronological order.
-F <file format>
Sets the file format of the output capture file. Mergecap can write the file in several formats; mergecap -F provides a list of the
available output formats. The default is to use the file format of the first input file.
-h Prints the version and options and exits.
-s <snaplen>
Sets the snapshot length to use when writing the data. If the -s flag is used to specify a snapshot length, frames in the input file
with more captured data than the specified snapshot length will have only the amount of data specified by the snapshot length written
to the output file. This may be useful if the program that is to read the output file cannot handle packets larger than a certain size
(for example, the versions of snoop in Solaris 2.5.1 and Solaris 2.6 appear to reject Ethernet frames larger than the standard Ethernet
MTU, making them incapable of handling gigabit Ethernet captures if jumbo frames were used).
-T <encapsulation type>
Sets the packet encapsulation type of the output capture file. If the -T flag is used to specify a frame encapsulation type, the
encapsulation type of the output capture file will be forced to the specified type, rather than being the type appropriate to the
encapsulation type of the input capture files.
Note that this merely forces the encapsulation type of the output file to be the specified type; the packet headers of the packets will
not be translated from the encapsulation type of the input capture file to the specified encapsulation type (for example, it will not
translate an Ethernet capture to an FDDI capture if an Ethernet capture is read and '-T fddi' is specified).
-v Causes mergecap to print a number of messages while it's working.
-w <outfile>|-
Sets the output filename. If the name is '-', stdout will be used. This setting is mandatory.
EXAMPLES
To merge two capture files together, 100 seconds apart use:
capinfos -aeS a.pcap b.pcap
(Let's suppose a.pcap starts at 1009932757 and b.pcap ends at 873660281. 1009932757 - 873660281 - 100 = 136272376 seconds.)
editcap -t 136272376 b.pcap b-shifted.pcap
mergecap -w compare.pcap a.pcap b-shifted.pcap
SEE ALSO
pcap(3), wireshark(1), tshark(1), dumpcap(1), editcap(1), text2pcap(1), pcap-filter(7) or tcpdump(8) if it doesn't exist.
NOTES
Mergecap is based heavily upon editcap by Richard Sharpe <sharpe[AT]ns.aus.com> and Guy Harris <guy[AT]alum.mit.edu>.
Mergecap is part of the Wireshark distribution. The latest version of Wireshark can be found at <http://www.wireshark.org>.
HTML versions of the Wireshark project man pages are available at: http://www.wireshark.org/docs/man-pages
<http://www.wireshark.org/docs/man-pages>.
AUTHORS
Original Author
-------- ------
Scott Renfro <scott[AT]renfro.org>
Contributors
------------
Bill Guyton <guyton[AT]bguyton.com>
1.8.2 2012-06-05 MERGECAP(1)
