Sponsored Content
Top Forums UNIX for Dummies Questions & Answers Split a file with no pattern -- Split, Csplit, Awk Post 302151799 by drl on Monday 17th of December 2007 11:30:18 AM
Old 12-17-2007
Hi, jim mcnamara.
Quote:
Originally Posted by print "$lines lines read.\n";
If disk i/o is not making split "too slow" then try awk. But you should consider that a big I/O request queue length on that filesystem is a likely candidate for slow splitting, rather than split being a bad performer.
awk version of split:
Code:
awk ' {
          if(NR<300000) { print $0 > "smallfile1"}
          if (NR>300000 && NR < 600000) { print $0 > "smallfile2" }
          if (NR>60000) {print $0 > "smallfile3" }
       }'  bigfile

The number in red appears to be missing a zero, suggesting that the last part of the file beyond 60K (not 600K) ends up on smallfile3 ... cheers, drl
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Split files using Csplit

I have an excel file with more than 65K records... Since excel does not take more than 65K records i wan to split the file and send it as two excel files... Could some help me how to use the csplit by specifiying the no of records (7 Replies)
Discussion started by: savitha
7 Replies

2. Shell Programming and Scripting

Split a file based on pattern in awk, grep, sed or perl

Hi All, Can someone please help me write a script for the following requirement in awk, grep, sed or perl. Buuuu xxx bbb Kmmmm rrr ssss uuuu Kwwww zzzz ccc Roooowwww eeee Bxxxx jjjj dddd Kuuuu eeeee nnnn Rpppp cccc vvvv cccc Rhhhhhhyyyy tttt Lhhhh rrrrrssssss Bffff mmmm iiiii Ktttt... (5 Replies)
Discussion started by: kumarn
5 Replies

3. Shell Programming and Scripting

Split a file based on a pattern

Dear all, I have a large file which is composed of 8000 frames, what i would like to do is split the file into 8000 single files names file.pdb.1, file.pdb.2 etc etc each frame in the large file is seperated by a "ENDMDL" flag so my thinking is to use this flag a a point to split the files... (4 Replies)
Discussion started by: Mish_99
4 Replies

4. Shell Programming and Scripting

Split binary file with pattern

Hello! Have some problem with extract files from saved session. File contains any kind of special/printable characters. DATA NumberA DATA DATA Begin DATA1.1 DATA1.2 NumberB1 DATA1.3 DATA1.4 End DATA DATA DATA Begin DATA2.1 DATA2.2 NumberB2 DATA2.3 DATA2.4 End DATA DATA ... (4 Replies)
Discussion started by: vvild
4 Replies

5. Shell Programming and Scripting

Split File by Pattern with File Names in Source File... Awk?

Hi all, I'm pretty new to Shell scripting and I need some help to split a source text file into multiple files. The source has a row with pattern where the file needs to be split, and the pattern row also contains the file name of the destination for that specific piece. Here is an example: ... (2 Replies)
Discussion started by: cul8er
2 Replies

6. Shell Programming and Scripting

awk to split one field and print the last two fields within the split part.

Hello; I have a file consists of 4 columns separated by tab. The problem is the third fields. Some of the them are very long but can be split by the vertical bar "|". Also some of them do not contain the string "UniProt", but I could ignore it at this moment, and sort the file afterwards. Here is... (5 Replies)
Discussion started by: yifangt
5 Replies

7. Shell Programming and Scripting

Split a file based on pattern and size

Hello, I have a large file (2GB) that I would like to split based on pattern and size. I've used the following command to split the file (token is "HELLO") awk '/HELLO/{i++}{print > "file"i}' input.txt and the output is similar to the following (i included filesize in KB): 10 ... (2 Replies)
Discussion started by: jl487
2 Replies

8. Shell Programming and Scripting

split file by delimiter with csplit

Hello, I want to split a big file into smaller ones with certain "counts". I am aware this type of job has been asked quite often, but I posted again when I came to csplit, which may be simpler to solve the problem. Input file (fasta format): >seq1 agtcagtc agtcagtc ag >seq2 agtcagtcagtc... (8 Replies)
Discussion started by: yifangt
8 Replies

9. Shell Programming and Scripting

Split the file based on pattern

Hi , I have huge files around 400 mb, which has clob data and have diffeent scenarios: I am trying to pass scenario number as parameter and and get required modified file based on the scenario number and criteria. Scenario 1: file name : scenario_1.txt ... (2 Replies)
Discussion started by: sol_nov
2 Replies

10. UNIX for Advanced & Expert Users

Split one file to many based on pattern

Hello All, I have records in a file in a pattern A,B,B,B,B,K,A,B,B,K Is there any command or simple logic I can pull out records into multiple files based on A record? I want output as File1: A,B,B,B,B,K File2: A,B,B,K (9 Replies)
Discussion started by: deal1dealer
9 Replies
deb-split(5)							      Debian							      deb-split(5)

NAME
deb-split - Debian multi-part binary package format SYNOPSIS
filename.deb DESCRIPTION
The multi-part .deb format is used to split big packages into smaller pieces to ease transport in small media. FORMAT
The file is an ar archive with a magic value of !<arch>. The file names might contain a trailing slash (since dpkg 1.15.6). The first member is named debian-split and contains a series of lines, separated by newlines. Currently seven lines are present. The first is the format version number, 2.1 at the time this manual page was written. The second is the package name. The third is the package ver- sion. The fourth is the md5sum of the package. The fifth is the total size of the package. The sixth is the maximum part size. The seventh is the current part number, followed by a slash and the total amount of parts (as in '1/10'). Programs which read multi-part archives should be prepared for additional lines to be present, and should ignore these if this is the case. If the version number has changed, an incompatible change has been made and the program should stop. If it has not, then the program should be able to safely continue, unless it encounters an unexpected member in the archive (except at the end), as described below. The second, last required member is named data.N, where N denotes the part number. It contains the raw part data. These members must occur in this exact order. Current implementations should ignore any additional members after data.N. Further members may be defined in the future, and (if possible) will be placed after these two. SEE ALSO
deb(5), dpkg-split(1). Debian Project 2010-01-28 deb-split(5)
All times are GMT -4. The time now is 12:57 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy