Sponsored Content
Top Forums UNIX for Beginners Questions & Answers How to copy only some lines from very big file? Post 302965772 by phamnu on Tuesday 2nd of February 2016 11:09:49 PM
Old 02-03-2016
How to copy only some lines from very big file?

Dear all,

I have stuck with this problem for some days.
I have a very big file, this file can not open by vi command.
There are 200 loops in this file, in each loop will have one line like this:

Code:
GWA quasiparticle energy with Z factor (eV)

And I need 98 lines next after this line.

Is any way I can do this with UNIX commands?

Thanks

Last edited by Don Cragun; 02-03-2016 at 06:52 AM.. Reason: Add CODE tags.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

How to view a big file(143M big)

1 . Thanks everyone who read the post first. 2 . I have a log file which size is 143M , I can not use vi open it .I can not use xedit open it too. How to view it ? If I want to view 200-300 ,how can I implement it 3 . Thanks (3 Replies)
Discussion started by: chenhao_no1
3 Replies

2. Shell Programming and Scripting

Copy only the initial 10 lines from a file to another

Hi all, I'm new to shell scripting. I want to copy initial few lines(say first 10 lines) from a file to another file. There is no "head" command in our embedded system. sed & awk is there which I believe will do that, but I dont know how to. This is linux 2.6 (embedded) So please help me.... (5 Replies)
Discussion started by: jockey007
5 Replies

3. UNIX for Dummies Questions & Answers

How big is too big a config.log file?

I have a 5000 line config.log file with several "maybe" errors. Any reccomendations on finding solvable problems? (2 Replies)
Discussion started by: NeedLotsofHelp
2 Replies

4. Shell Programming and Scripting

Print #of lines after search string in a big file

I have a command which prints #lines after and before the search string in the huge file nawk 'c-->0;$0~s{if(b)for(c=b+1;c>1;c--)print r;print;c=a}b{r=$0}' b=0 a=10 s="STRING1" FILE The file is 5 gig big. It works great and prints 10 lines after the lines which contains search string in... (8 Replies)
Discussion started by: prash184u
8 Replies

5. Shell Programming and Scripting

Re: Deleting lines from big file.

Hi, I have a big (2.7 GB) text file. Each lines has '|' saperator to saperate each columns. I want to delete those lines which has text like '|0|0|0|0|0' I tried: sed '/|0|0|0|0|0/d' test.txt Unfortunately, it scans the file but does nothing. file content sample:... (4 Replies)
Discussion started by: dipeshvshah
4 Replies

6. Shell Programming and Scripting

How to copy lines that starts with either 3 or 4 into new file?

Hi Guys, I have an awk script that would search the input file for line that starts with a number 3 and copies into a new text file. I want to extend this script to find the lines that either starts with 3 or a or b and copy all those lines into the new file. Here is what I have so far:... (1 Reply)
Discussion started by: Amith821
1 Replies

7. UNIX for Advanced & Expert Users

Delete first 100 lines from a BIG File

Hi, I need a unix command to delete first n (say 100) lines from a log file. I need to delete some lines from the file without using any temporary file. I found sed -i is an useful command for this but its not supported in my environment( AIX 6.1 ). File size is approx 100MB. Thanks in... (18 Replies)
Discussion started by: unohu
18 Replies

8. UNIX for Dummies Questions & Answers

Copy Files From a big list

Requirement: When I do ls -ltr /home/data/orders I get a huge list of files, I need to copy that last 50 to another directory say /home/work/ later, I will do my ETL process and then again I need to copy from 51 to 100 and so on. What is the command to copy files specifying 1 to 50... (5 Replies)
Discussion started by: eskay
5 Replies

9. Shell Programming and Scripting

Want to extract certain lines from big file

Hi All, I am trying to get some lines from a file i did it with while-do-loop. since the files are huge it is taking much time. now i want to make it faster. The requirement is the file will be having 1 million lines. The format is like below. ##transaction, , , ,blah, blah... (38 Replies)
Discussion started by: mad man
38 Replies

10. Shell Programming and Scripting

Copy lines from x to y to another file

OS : RHEL 7.2 Shell : bash I have a file which has lines like below I want to copy from 2nd line to the 6th line and copy(redirect) those lines to another file. $ cat patterns.txt hello world hello asia hello europe hello africa hello america hello antartica hello... (9 Replies)
Discussion started by: omega3
9 Replies
IRSEND(1)							   User Commands							 IRSEND(1)

NAME
irsend - basic LIRC program to send infra-red commands SYNOPSIS
irsend [options] DIRECTIVE REMOTE CODE [CODE...] DESCRIPTION
Asks the lircd daemon to send one or more CIR (Consumer Infra-Red) commands. This is intended for remote control of electronic devices such as TV boxes, HiFi sets, etc. DIRECTIVE can be: SEND_ONCE - send CODE [CODE ...] once SEND_START - start repeating CODE SEND_STOP - stop repeating CODE LIST - list configured remote items SET_TRANSMITTERS - set transmitters NUM [NUM ...] SIMULATE - simulate IR event REMOTE is the name of a remote, as described in the lircd configuration file. CODE is the name of a remote control key of REMOTE, as it appears in the lircd configuration file. NUM is the transmitter number of the hardware device. For the LIST DIRECTIVE, REMOTE and/or CODE can be empty: LIST "" "" - list all configured remote names LIST REMOTE "" - list all codes of REMOTE LIST REMOTE CODE - list only CODE of REMOTE The SIMULATE command only works if it has been explicitly enabled in lircd. -h --help display usage summary -v --version display version -d --device use given lircd socket [/var/run/lirc/lircd] -a --address=host[:port] connect to lircd at this address -# --count=n send command n times EXAMPLES
irsend LIST DenonTuner "" irsend SEND_ONCE DenonTuner PROG-SCAN irsend SEND_ONCE OnkyoAmpli VOL-UP VOL-UP VOL-UP VOL-UP irsend SEND_START OnkyoAmpli VOL-DOWN ; sleep 3 irsend SEND_STOP OnkyoAmpli VOL-DOWN irsend SET_TRANSMITTERS 1 irsend SET_TRANSMITTERS 1 3 4 irsend SIMULATE "0000000000000476 00 OK TECHNISAT_ST3004S" FILES
/etc/lirc/lircd.conf Default lircd configuration file. It should contain all the remotes, their infra-red codes and the corresponding timing and wave- form details. DIAGNOSTICS
If lircd is not running (or /var/run/lirc/lircd lacks write permissions) irsend aborts with the following diagnostics: "irsend: could not connect to socket" "irsend: Connection refused" (or "Permission denied"). SEE ALSO
The documentation for lirc is maintained as html pages. They are located under html/ in the documentation directory. lircd(8), mode2(1), smode2(1), xmode2(1), irrecord(1), irw(1), http://www.lirc.org. irsend 0.9.0-pre1 October 2010 IRSEND(1)
All times are GMT -4. The time now is 11:14 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy