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Full Discussion: Converting csv file to flat file
Top Forums Shell Programming and Scripting Converting csv file to flat file Post 303023611 by Don Cragun on Thursday 20th of September 2018 12:58:49 AM
Old 09-20-2018
Of course you can do that. But, you'll need to be much clearer about what you mean by "length needs to be determined (sic) accorindly". I'm not at all clear about how you want to fit eight characters from engineer or six characters from doctor in a five character output field. (And you still haven't told us whether you want left-justified or right-justified text in fields that do not completely fill the output field.)

Note that in awk you can use length($1) to get the number of characters contained in field 1 on the current input line and in shell you can use ${#c} to get the number of characters contained the shell variable c. That should be everything you need to determine how many characters are in your widest input fields and to produce a format string that will give you appropriately sized output fields.

Why don't you try clearly specifying your output requirements, and try to write a corresponding awk or shell (or both) script to produce the output you want. If you can't make it work, show us where you get stuck.
 

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LEARN ABOUT DEBIAN

ifpps

ifpps(8)							netsniff-ng-toolkit							  ifpps(8)

NAME

       ifpps - fetch and format kernel network statistics

SYNOPSIS

       ifpps	 -d|--dev <netdev> [-t|--interval <sec>][-p|--promisc][-c|--term]
	    [-C|--csv][-H|--csv-tablehead][-l|--loop][-v|--version][-h|--help]

DESCRIPTION

       A tiny tool to provide top-like reliable networking statistics.	ifpps reads out the 'real' kernel statistics, so it does not give
       erroneous statistics on high I/O load.

OPTIONS

       ifpps --dev eth0
	   Fetch eth0 interface statistics.

       ifpps --dev eth0 --interval 60 --csv
	   Output eth0 interface statistics every minute in CSV format.

OPTIONS

       -h|--help
	   Print help text and lists all options.

       -v|--version
	   Print version.

       -d|--dev <netdev>
	   Device to fetch statistics for i.e., eth0.

       -p|--promisc
	   Put the device in promiscuous mode

       -t|--interval <time>
	   Refresh time in sec (default 1 sec)

       -c|--term
	   Output to terminal

       -C|--csv
	   Output in CSV format.  E.g. post-processing with Gnuplot et al.

       -H|--csv-tablehead
	   Print CSV table head.

       -l|--loop
	   Loop terminal output.

AUTHOR

       Written by Daniel Borkmann <daniel@netsniff-ng.org>

DOCUMENTATION

       Documentation by Emmanuel Roullit <emmanuel@netsniff-ng.org>

BUGS

       Please report bugs to <bugs@netsniff-ng.org>

								    2012-06-29								  ifpps(8)
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