Sponsored Content
Top Forums Shell Programming and Scripting extract data between nth and n+1th instance of a line Post 302236751 by ryanp200 on Tuesday 16th of September 2008 09:12:47 AM
Old 09-16-2008
extract data between nth and n+1th instance of a line

folks..
i need a simple one liner to extract data from between the (n)th and (n+1)th instance of a line in a 2 colum file.
eg....for n=3 i should get back
0 1
4 6

help would be much appreciated.

file blah.txt
##################
identifer line
0 3
0 3
identifer line
0 2
0 1
0 3
identifer line
0 1
4 6
identifer line
0 2
0 1
0 3
0 2
0 1
0 3
EOF
#############################
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

replace first instance(not first instance in line)

Alright, I think I know what I am doing with sed(which probably means I don't). But I cant figure out how to replace just the first occurance of a string. I have tried sed, ed, and grep but can't seem to figure it out. If you have any suggestions I am open to anything! (3 Replies)
Discussion started by: IronHorse7
3 Replies

2. Shell Programming and Scripting

replace nth instance of string

Hi all, I have file with following content ........................... ..........TEST.......... ..........TEST.......... ..................... .....TEST.......... ..................... ..................... .....TEST.......... I want to replace nth "TEST" with "OK" using... (4 Replies)
Discussion started by: uttamhoode
4 Replies

3. UNIX for Dummies Questions & Answers

Using sed to extract Nth record?

I have a comma-separated record and I'd like to use sed to pull the Nth record from it. It seems like it'd need to be something like this: sed -n 's/'"\,$1\,"'/&/p' Am I close? (3 Replies)
Discussion started by: doubleminus
3 Replies

4. Shell Programming and Scripting

extract nth line of all files and print in output file on separate lines.

Hello UNIX experts, I have 124 text files in a directory. I want to extract the 45678th line of all the files sequentialy by file names. The extracted lines should be printed in the output file on seperate lines. e.g. The input Files are one.txt, two.txt, three.txt, four.txt The cat of four... (1 Reply)
Discussion started by: yogeshkumkar
1 Replies

5. Shell Programming and Scripting

Calculating average for every Nth line in the Nth column

Is there an awk script that can easily perform the following operation? I have a data file that is in the format of 1944-12,5.6 1945-01,9.8 1945-02,6.7 1945-03,9.3 1945-04,5.9 1945-05,0.7 1945-06,0.0 1945-07,0.0 1945-08,0.0 1945-09,0.0 1945-10,0.2 1945-11,10.5 1945-12,22.3... (3 Replies)
Discussion started by: ncwxpanther
3 Replies

6. UNIX for Dummies Questions & Answers

Printing nth and n+1th line after a pattern match

Hi , I want to print the nth and n+1 lines from a file once it gets a pattern match. For eg: aaa bbb ccc ddd gh jjjj If I find a match for bbb then I need to print bbb as well as 3rd and 4th line from the match.. Please help..Is it possible to get a command using sed :) (6 Replies)
Discussion started by: saj
6 Replies

7. Shell Programming and Scripting

sed or awk, cut, to extract specific data from line

Hi guys, I have been trying to do this, but... no luck so maybe you can help me. I have a line like this: Total Handled, Received, on queue Input Mgs: 140 / 14 => 0 I need to, get the number after the / until the =, to get only 14 . Any help is greatly appreciated. Thanks, (4 Replies)
Discussion started by: ocramas
4 Replies

8. Shell Programming and Scripting

Extract the text between the nth occurrence of square brackets

Please can someone help with this? I have a file with lines as follows: word1 word2 word3 word4 word5 word6 word7 word8 word1 word2 word3 word4 word5 word6 word7 word8 word1 word2 word3 word4 word5 word6 word7 word8 word1 word2 word3 word4 word5 word6 word7 word8 When I use the... (7 Replies)
Discussion started by: Subhadeep_Sahu
7 Replies

9. UNIX for Dummies Questions & Answers

Extract until nth occurence

Hi, I couldn't figure how to extract until last occurence of a character. I have the string ./dir1/file1/abc.sh The output should be /dir1/file1 So, the command should display the path until last occurence of "/". Thanks. (3 Replies)
Discussion started by: rajivn786
3 Replies

10. Shell Programming and Scripting

If the 1th column of file f1 and file f2 is the same, then export those line with maximum string of

please help to write a awk command-line programs to achieve the following functions: Thank in advance. Requeset Description: compare two files f1 and f2, export to file f3: 1 Delete duplicate rows of in file f1 and file f2 2 If the 1th column of file f1 and file f2 is the same, then export... (1 Reply)
Discussion started by: weichanghe2000
1 Replies
RDMA_MIGRATE_ID(3)					   Librdmacm Programmer's Manual					RDMA_MIGRATE_ID(3)

NAME
rdma_migrate_id - Move a communication identifer to a different event channel. SYNOPSIS
#include <rdma/rdma_cma.h> int rdma_migrate_id (struct rdma_cm_id *id, struct rdma_event_channel *channel); ARGUMENTS
id An existing communication identifier to migrate. channel The communication channel that events associated with the allocated rdma_cm_id will be reported on. May be NULL. DESCRIPTION
Migrates a communication identifier to a different event channel. RETURN VALUE
Returns 0 on success, or -1 on error. If an error occurs, errno will be set to indicate the failure reason. NOTES
This routine migrates a communication identifier to the specified event channel and moves any pending events associated with the rdma_cm_id to the new channel. Users should not poll for events on the rdma_cm_id's current event channel or invoke other routines on the rdma_cm_id while migrating between channels. This call will block while there are any unacknowledged events on the current event channel. If the channel parameter is NULL, the specified rdma_cm_id will be placed into synchronous operation mode. All calls on the id will block until the operation completes. SEE ALSO
rdma_cm(7), rdma_create_event_channel(3), rdma_create_id(3), rdma_get_cm_event(3) librdmacm 2007-11-13 RDMA_MIGRATE_ID(3)
All times are GMT -4. The time now is 03:08 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy