Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Bash script help - removing certain rows from .csv file
Top Forums Shell Programming and Scripting Bash script help - removing certain rows from .csv file Post 302798495 by MrTuxor on Wednesday 24th of April 2013 02:43:12 PM
Old 04-24-2013
Quote:
Originally Posted by Skrynesaver
Code:
tshark -r "$in_pcap" -T fields -e frame.number -e ip.src -e ip.dst -e http.host -e frame.time -e frame.time_relative -E header=y -E separator=, |egrep -v '^[^,]*,[^,]*,[^,]*,,'> "$out_csv"

Thanks a million for this answer!

I went from 600,000+ rows to analyze to less than 3100 and it did everything I wanted it to.

I do have one problem though. If I run this line:
tshark -r test.pcap -T fields -e frame.number -e ip.src -e ip.dst -e http.host -e frame.time -e frame.time_relative -E header=y -E separator=, |egrep -v '^[^,]*,[^,]*,[^,]*,,'> test.csv
Everything works perfectly fine.

However if I run my script mentioned above with the variables $in_pcap and $out_csv, I get the following error message:
./pcapAnalyze: line 9: $out_csv: ambiguous redirect
tshark: Output fields were specified with "-e", but "-Tfields" was not specified.

I wanted to make sure the command ran on its own without the variables to limit the amount of things that could go wrong. After simply replacing the hard coded .pcap and .csv files with variables, I get that error message. The only thing that I changed was implementing the variable... Why is it doing that?

Thanks in advance!
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Bash Script - Removing Year and Text from File Name

Hi, I have files with names in the following naming pattern, Name.of.moviemoretext-moretext.mov or Name of moviemoretext-moretext.mov And I would like to delete the and moretext-moretext leaving just the Name of movie. The Name of movie will always be different and the year will... (4 Replies)
Discussion started by: Monkey Dean
4 Replies

2. Shell Programming and Scripting

Deleting rows from csv file

Hello, I am supposed to process about 100 csv files. But these files have some extra lines at the bottom of the file. these extra lines start with a header for each column and then some values below. These lines are actually a summary of the actual data and not supposed to be processed. These... (8 Replies)
Discussion started by: cobroraj
8 Replies

3. Shell Programming and Scripting

Removing rows from a file

I have a file like below and want to use awk to solve this problem. The record separator is ">". I want to look at each record section enclosed within ">". Find the row with the 2nd and 3rd columns being 0, such as 10 0 0 I need to take the first number which in this case is 10. Then... (15 Replies)
Discussion started by: kristinu
15 Replies

4. Shell Programming and Scripting

Removing rows based on a another file

Hi, I am not sure if this has already been asked (I tried the search but the search was too broad). Basically I want to remove rows based on another file. So file1 looks like this (tab seperated): HHN 3 5 5 HUJ 2 2 1 JJJ 3 1 1 JUN 2 1 3 I have another file (file2)... (2 Replies)
Discussion started by: kylle345
2 Replies

5. Shell Programming and Scripting

Need to modify csv-file with bash script

Hi Guys, I need to write a script, that exports the "moz_places" table of the "places.sqlite"-file (firefox browser history) into a csv-file. That part works. After the export, my csv looks like this: ... 4429;http://www.sqlite.org/sqlite.html;"Command Line Shell For... (11 Replies)
Discussion started by: Sebi0815
11 Replies

6. Shell Programming and Scripting

Please do help: Perl Script to pull out rows from a CSV file

I have CSV file that contains data in the format as shown below: ABC, 67, 56, 67, 78, 89, 76, 55 PDR, 85, 83, 83, 72, 82, 89, 83 MPG, 86, 53, 54, 65, 23, 54, 75 .. .. .. .. I want to create a script that will pull out the rows from the above sheet and paste it into another CSV file.... (12 Replies)
Discussion started by: pankajusc
12 Replies

7. Shell Programming and Scripting

Shell script to count unique rows in a CSV

HI All, I have a CSV file of 30 columns separated by ,. I want to get a count of all unique rows written to a flat file. The CSV file is around 5000 rows The first column is a time stamp and I need to exclude while counting unique Thanks, Ravi (4 Replies)
Discussion started by: Nani369
4 Replies

8. Shell Programming and Scripting

Removing rows and chars from text file

Dear community, maybe I'm asking the moon :rolleyes:, but I'm scratching my head to find a solution for it. :wall: I have a file called query.out (coming from Oracle query), the file is like this: ADDR TOTAL -------------------- ---------- TGROUPAGGR... (16 Replies)
Discussion started by: Lord Spectre
16 Replies

9. Shell Programming and Scripting

Removing Duplicate Rows in a file

Hello I have a file with contents like this... Part1 Field2 Field3 Field4 (line1) Part2 Field2 Field3 Field4 (line2) Part3 Field2 Field3 Field4 (line3) Part1 Field2 Field3 Field4 (line4) Part4 Field2 Field3 Field4 (line5) Part5 Field2 Field3 Field4 (line6) Part2 Field2 Field3 Field4... (7 Replies)
Discussion started by: ekbaazigar
7 Replies

10. Shell Programming and Scripting

Removing top few and bottom few rows in a file

Hi, I have a requirement where I need to delete given number of top and bottom rows in a flat file which has new line as its delimiter. For ex: if top_rows=2 & bottom_rows=1 Then in a given file which looks like: New York DC LA London Tokyo Prague Paris Bombay Sydney... (7 Replies)
Discussion started by: calredd
7 Replies

LEARN ABOUT CENTOS

processcsv.py

PROCESSCSV.PY(1)					      Virtualization Support						  PROCESSCSV.PY(1)

NAME

       processcsv.py - process virt-top CSV files

SUMMARY

	virt-top --csv data.csv
	processcsv.py < data.csv

DESCRIPTION

       virt-top is a top(1)-like utility for showing stats of virtualized domains.

       processcsv.py is a simple Python script that post-processes the output of "virt-top --csv".

       It is used like this:

	virt-top --csv data.csv
	processcsv.py < data.csv

       The second command will overwrite the following files in the current directory:

       "global.csv"
	   This contains the global (host) statistics columns from the CSV file.

       "domainNN.csv" (multiple files)
	   For each libvirt domain ID NN, a file is created containing the per-domain statistics from the CSV file.

SEE ALSO

       virt-top(1)

AUTHORS

       Richard W.M. Jones <rjones @ redhat . com>

COPYRIGHT

       (C) Copyright 2007-2012 Red Hat Inc., Richard W.M. Jones http://libvirt.org/

       This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
       Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

virt-top-1.0.8							    2013-12-29							  PROCESSCSV.PY(1)
All times are GMT -4. The time now is 10:43 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy