Further, I need your help. I have 10 more files, all of same format (11.txt) as follows, showing 2 repeats from this file:
Code:
ATOM 1 N SER A 1 35.092 83.194 140.076 1.00 0.00 N
ATOM 2 CA SER A 1 35.216 83.725 138.725 1.00 0.00 C
ATOM 3 C SER A 1 36.530 84.485 138.538 1.00 0.00 C
TER
ENDMDL
ATOM 1 N SER A 1 35.683 81.326 139.778 1.00 0.00 N
ATOM 2 CA SER A 1 35.422 82.736 139.929 1.00 0.00 C
ATOM 3 C SER A 1 36.497 83.588 139.247 1.00 0.00 C
TER
ENDMDL
ENDMDL is coming around 10000 times in each file. If I give input of 100 at $1 from o.txt, then it should output the first repeat from 11. txt ending with ENDMDL.
Code:
ATOM 1 N SER A 1 35.092 83.194 140.076 1.00 0.00 N
ATOM 2 CA SER A 1 35.216 83.725 138.725 1.00 0.00 C
ATOM 3 C SER A 1 36.530 84.485 138.538 1.00 0.00 C
TER
ENDMDL
So, corresponding to first column of o.txt, I want to retreive the repeat at the number $1/100 from 11.txt i.e. if $1=2000, then I want to retreive the pattern where ENDMDL is at 20 place.
Please guide me.
Thanks again
---------- Post updated at 10:40 PM ---------- Previous update was at 09:52 PM ----------
Please guide me. Its urgent.
Thanks
Last edited by Scrutinizer; 12-31-2012 at 03:53 AM..
Reason: code tags
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LEARN ABOUT DEBIAN
rtpproxy
RTPPROXY(8) [FIXME: manual] RTPPROXY(8)NAME
rtpproxy - RTP (Real-time Transport Protocol) Proxy Server
SYNOPSIS
rtpproxy [-?] [-2] [-f] [-v] [-R] [-l addr1[/addr2]] [-6 addr1[/addr2]] [-s ctrl_socket] [-t tos] [-p pidfile] [-T max_ttl]
[-r rdir [-S sdir]]
DESCRIPTION
rtpproxy is a symmetric RTP proxy designed to be used in conjunction with the SIP Express Router (SER) or any other SIP proxy capable of
rewriting SDP bodies in SIP messages that it processes.
The main purpose of rtpproxy is to make the communication between SIP user agents behind NAT(s) (Network Address Translator) possible.
Several cases exists when direct end-to-end communication is not possible and RTP streams have to be relayed through another host. Rtpproxy
can be used to setup such a relaying host.
When two listen interfaces have been specified using the command line parameters described below then rtpproxy will enter so called
bridging mode. In briding mode rtpproxy forwards RTP packets received on one interface to the other interface and vice versa. This mode can
be used to forward RTP packets between networks without direct network level connectivy (provided that the host running rtpproxy has one
interface in both of them). One particular application of bridging mode is IPv4/IPv6 traversal of RTP packets.
When instructured by SER rtpproxy can also record the entire RTP session in a file on a local harddisk or play a pre-recorded file to the
user agent (so called Music-on-Hold).
OPTIONS
-?
Show summary of options.
-2
Send every RTP packet twice in sessions that use low-bitrate codecs. Only packets that are smaller than 128 bytes will be sent twice.
This option can improve audio quality on lossy links.
-f
Rtpproxy will stay in foreground mode if this option is set.
-v
Show version of program.
-l addr1[/addr2]
IPv4 listen IP address(es). You can specify either one or two addresses. If two addresses have been specified then rtpproxy will work
in bridging mode.
-6 addr1[/addr2]
IPv6 listen IP address(es). You can specify either one or two addresses. If two addresses have been specified then rtpproxy will work
in bridging mode.
-s ctrl_socket
This parameter configures rtpproxy control socket. The control socket is used by nathelper module of SER to create/modify/delete RTP
sessions to be relayed. Format of ctrl_socket is <type>:<socket>. Following types are supported:
o udp: Create UDP control socket. In this mode RTPProxy will listen on UDP for control messages from SER/nathelper.
Example: -s udp:127.0.0.1:9000
IP address can be '*' in which case rtpproxy will listen on all local interfaces. If omitted port 22222 is used.
Note
RTPProxy control protocol has no built-in security mechanisms. Make sure that you protect the listening IP and port properly
when using RTPProxy with UDP control socket.
o udp6: Create IPv6 UDP control socket. In this mode RTPProxy will listen on UDP/IPv6 for control messages from SER/nathelper.
Example: -s udp6:::1:9000
o unix: Create UNIX domain socket for control interface. In this mode SER/nathelper and RTPProxy must be running on the same host.
This is the default setting for both SER/nathelper and rtpproxy.
Example: -s unix:/var/run/rtpproxy.sock
Default value is /var/run/rtpproxy.sock.
-t tos
Set this ToS (Type of Service) in outgoing packets. Default value is 0xB8.
-r rec_dir
Directory where recorded RTP sessions will be stored.
-S spool_dir
Spool directory for RTP sessions being recorded. The file will be moved to directory configured in -r option after the session
finishes.
-R
Do not record RTCP when recording an RTP session. This option is disabled (rtpproxy will record RTCP) by default.
-p pid_file
This parameter configures the name of the file where PID of running rtpproxy will be stored. Default is /var/run/rtpproxy.pid.
-T max_ttl
Limit the maximum TTL (Time To Live) of outgoing IP packets to the value of max_ttl.
HOWITWORKS
When SER receives an INVITE request, it extracts Call-ID from it and communicates it to rtpproxy via Unix domain socket or UDP. Rtproxy
looks for an existing session with such Call-ID. If the session exists it returns UDP port for that session, if not, then it creates a new
session, binds to a first empty UDP port from the range specified at the compile time and returns number of that port to a SER. After
receiving reply from the proxy, SER replaces media ip:port in the SDP to point to the proxy and forwards request as usually.
When SER receives a non-negative SIP reply with SDP it again extracts Call-ID from it and communicates it to the proxy. In this case the
proxy does not allocate a new session if it doesn't exist, but simply performs a lookup among existing sessions and returns either a port
number if the session is found, or error code indicating that there is no session with such id. After receiving positive reply from the
proxy, SER replaces media ip:port in the SIP reply to point to the proxy and forwards reply as usually.
After the session has been created, the proxy listens on the port it has allocated for that session and waits for receiving at least one
UDP packet from each of two parties participating in the call. Once such packet is received, the proxy fills one of two ip:port structures
associated with each call with source ip:port of that packet. When both structures are filled in, the proxy starts relaying UDP packets
between parties.
The proxy tracks idle time for each of existing sessions (i.e. the time within which there were no packets relayed), and automatically
cleans up a sessions whose idle times exceed the value specified at compile time (60 seconds by default).
FILES
/usr/sbin/rtpproxy
LICENSE
This program is licensed under the BSD license. See COPYING file in the rtpproxy sources for details.
AVAILABILITY
The latest version of this program can be found at http://ftp.iptel.org/pub/rtpproxy.
SEEALSO ser(8).
AUTHOR
Maxim Sobolev
Author.
COPYRIGHT
Copyright (C) 2006 janakj
[FIXME: source] Feb 20, 2006 RTPPROXY(8)
12-30-2012
