Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Split a file based on number sum at the second column and the third column. Post 303044726 by Chubler_XL on Monday 2nd of March 2020 02:51:56 PM
Old 03-02-2020
Sorry about my delay in gettng back think timezone differences are involved here. looks like we have some nice solutions coming together in this thread now.

This is the pseudo code I had in mind when I first read your requirements:
Code:
set startnum=0
set fileext = 1
loop:
    read line from input
    if column#3 - startnum > 2999 then
        startnum = column#2
        fileext = fileext + 1
    endif
    append line to filename("file" + fileext)
end loop

And the awk coded solution:
Code:
awk '
BEGIN { start=0 ; filenum=1 }
!start { start=$2 }
($3 - start) > 2999 {
   close("file" filenum)
   filenum++
   start=$2
}
{ print > "file" filenum }' infile

This is very similar to RudiC's proposal. The main difference being in the close statement. awk has a limited number of output buffers and using close will become necessary when dealing with a larger input files which can generate too many output files.

And in the spirit of this site this reduced solution could be derived from above:

Code:
awk '
!start || ($3 - start) > 2999 {
   close("file" filenum++)
   start=$2
}
{ print > "file" filenum }' infile


Last edited by Chubler_XL; 03-02-2020 at 04:09 PM..
This User Gave Thanks to Chubler_XL For This Post:
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

How do I sum one column based on another column?

Hi, I am new to this forum and new to awk. I have a file that contains 2 columns. Heres an example of what it looks like: 10 + 20 + 40 + 50 - 70 - So the file is tab-delimited. What I want to do is add 10 to column 1 whenever column 2 is + and substract 10 from column 1... (1 Reply)
Discussion started by: phil_heath
1 Replies

2. Shell Programming and Scripting

Split single file into multiple files based on the number in the column

Dear All, I would like to split a file of the following format into multiple files based on the number in the 6th column (numbers 1, 2, 3...): ATOM 1 N GLY A 1 -3.198 27.537 -5.958 1.00 0.00 N ATOM 2 CA GLY A 1 -2.199 28.399 -6.617 1.00 0.00 ... (3 Replies)
Discussion started by: tomasl
3 Replies

3. Shell Programming and Scripting

Split the file based on column

Hi, I have a file sample_1.txt (300k rows) which has data like below: * Also each record is around 64k bytes 11|1|abc|102553|125589|64k bytes of data 10|2|def|123452|123356|...... 13|2|geh|144351|121123|... 25|4|fgh|165250|118890|.. 14|1|abc|186149|116657|......... (6 Replies)
Discussion started by: sol_nov
6 Replies

4. Shell Programming and Scripting

Sum Of Column Based On Column Condition

I have a following inputfile MT,AP,CDM,TTML,MUM,GS,SUCC,3 MT,AP,CDM,TTSL,AP,GS,FAIL,9 MT,AP,CDM,RCom,MAH,GS,SUCC,3 MT,AP,CDM,RTL,HP,GS,SUCC,1 MT,AP,CDM,Uni,UPE,GS,SUCC,2 MT,AP,CDM,Uni,MUM,GS,SUCC,2 TTSL,AP,GS,MT,MAH,CDM,SUCC,20 TTML,AP,GS,MT,MAH,CDM,FAIL,10... (2 Replies)
Discussion started by: siramitsharma
2 Replies

5. Shell Programming and Scripting

awk to sum a column based on duplicate strings in another column and show split totals

Hi, I have a similar input format- A_1 2 B_0 4 A_1 1 B_2 5 A_4 1 and looking to print in this output format with headers. can you suggest in awk?awk because i am doing some pattern matching from parent file to print column 1 of my input using awk already.Thanks! letter number_of_letters... (5 Replies)
Discussion started by: prashob123
5 Replies

6. Shell Programming and Scripting

Sum column values based in common identifier in 1st column.

Hi, I have a table to be imported for R as matrix or data.frame but I first need to edit it because I've got several lines with the same identifier (1st column), so I want to sum the each column (2nd -nth) of each identifier (1st column) The input is for example, after sorted: K00001 1 1 4 3... (8 Replies)
Discussion started by: sargotrons
8 Replies

7. Shell Programming and Scripting

Split column data if the table has n number of column's

please write a shell script Table -------------------------- 1 2 3 a b c 3 4 5 c d e 7 8 9 f g h Output should be like this --------------- 1 2 3 3 4 5 7 8 9 a b c c d e f g h (1 Reply)
Discussion started by: Priti2277
1 Replies

8. Shell Programming and Scripting

Split column data if the table has n number of column's with some record

Split column data if the table has n number of column's with some record then how to split n number of colmn's line by line with records Table --------- Col1 col2 col3 col4 ....................col20 1 2 3 4 .................... 20 a b c d .................... v ... (11 Replies)
Discussion started by: Priti2277
11 Replies

9. Shell Programming and Scripting

Sum of a column as new column based on header in a script

Hello, I am trying to store sum of a column as a new column inside a file but have to find the column names dynamically I/p c1,c2,c3,c4,c5 10,20,30,40,50 20,30,40,50,60 If i want to find sum only column c1, c3 and output it as c6,c7 O/p c1,c2,c3,c4,c5,c6,c7 10,20,30,40,50,30,70... (6 Replies)
Discussion started by: mkathi
6 Replies

10. UNIX for Beginners Questions & Answers

Sum in file based column

Hi All, I have a file as below and want to sum based on the id in the first column Input 10264;ATE; 12 10265;SES;11 10266AUT;50 10264;ATE;10 10265;SES;13 10266AUT;89 10264;ATE;1 10265;SES;15 10266AUT;78 Output 10264;ATE; 23 10265;SES;39 10266AUT;139 (6 Replies)
Discussion started by: arunkumar_mca
6 Replies
TRACE-CMD-SPLIT(1)														TRACE-CMD-SPLIT(1)

NAME
trace-cmd-split - split a trace.dat file into smaller files SYNOPSIS
trace-cmd split [OPTIONS] [start-time [end-time]] DESCRIPTION
The trace-cmd(1) split is used to break up a trace.dat into small files. The start-time specifies where the new file will start at. Using trace-cmd-report(1) and copying the time stamp given at a particular event, can be used as input for either start-time or end-time. The split will stop creating files when it reaches an event after end-time. If only the end-time is needed, use 0.0 as the start-time. If start-time is left out, then the split will start at the beginning of the file. If end-time is left out, then split will continue to the end unless it meets one of the requirements specified by the options. OPTIONS
-i file If this option is not specified, then the split command will look for the file named trace.dat. This options will allow the reading of another file other than trace.dat. -o file By default, the split command will use the input file name as a basis of where to write the split files. The output file will be the input file with an attached '.#' to the end: trace.dat.1, trace.dat.2, etc. This option will change the name of the base file used. -o file will create file.1, file.2, etc. -s seconds This specifies how many seconds should be recorded before the new file should stop. -m milliseconds This specifies how many milliseconds should be recorded before the new file should stop. -u microseconds This specifies how many microseconds should be recorded before the new file should stop. -e events This specifies how many events should be recorded before the new file should stop. -p pages This specifies the number of pages that should be recorded before the new file should stop. Note: only one of *-p*, *-e*, *-u*, *-m*, *-s* may be specified at a time. If *-p* is specified, then *-c* is automatically set. -r This option causes the break up to repeat until end-time is reached (or end of the input if end-time is not specified). trace-cmd split -r -e 10000 This will break up trace.dat into several smaller files, each with at most 10,000 events in it. -c This option causes the above break up to be per CPU. trace-cmd split -c -p 10 This will create a file that has 10 pages per each CPU from the input. SEE ALSO
trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-list(1), trace-cmd-listen(1) AUTHOR
Written by Steven Rostedt, <rostedt@goodmis.org[1]> RESOURCES
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING
Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). NOTES
1. rostedt@goodmis.org mailto:rostedt@goodmis.org 06/11/2014 TRACE-CMD-SPLIT(1)
All times are GMT -4. The time now is 07:17 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy