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Full Discussion: awk output redirection to file
Top Forums Shell Programming and Scripting awk output redirection to file Post 302400636 by learnscript on Wednesday 3rd of March 2010 07:03:27 PM
Old 03-03-2010
awk output redirection to file
I have a system stat command running which generates data after 5 sec or so. I pass this data to awk and do some calculation to present the data differently. Once done now I want to pass this data to file as and when generated but doesn't work..unless the first command completes successfully.
Code:
nicstat-1.22/nicstat.Ubuntu7.i386 -i eth4 5 | awk '{print $1 " " ($3+$4)/1024" MBps"}'

This prints something like this:
Code:
Time 0 MBps
17:02:41 0.00254883 MBps
17:02:46 0.00296875 MBps


I want this to be directed to file say /tmp/foo but then I do :
Code:
nicstat-1.22/nicstat.Ubuntu7.i386 -i eth4 5 | awk '{print $1 " " ($3+$4)/1024" MBps"}' > /tmp/foo

It never gets added to foo file.
Thanks for your attention and help.
Last edited by Scott; 03-03-2010 at 08:09 PM.. Reason: Please use code tags
 

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LEARN ABOUT DEBIAN

dpkg-awk

DPKG-AWK(1)						      General Commands Manual						       DPKG-AWK(1)

NAME

       dpkg-awk - Utility to read a dpkg style db file

SYNOPSIS

       dpkg-awk [(-f|--file) filename] [(-d|--debug) ##] [(-s|--sort) list] [(-rs|--rec_sep) ??] '<fieldname>:<regex>' ... -- <out_fieldname> ..

DESCRIPTION

       dpkg-awk  Parses  a  dpkg status file (or other similarly formatted file) and outputs the resulting records.  It can use regex on the field
       values to limit the returned records, it can also be told which fields to output, and it can sort the matched fields.

OPTIONS

       -f filename
       --file filename
	      The file to parse.  The default is /var/lib/dpkg/status.

       -d [#]
       --debug [#]
	      Each time this is specified, it increased the debug level.

       -s field(s)
       --sort field(s)
	      A space or comma separated list of fields to sort on.

       -n field(s)
       --numeric field(s)
	      A space or comma separated list of fields that should be interpreted as numeric in value.

       -rs ??
       --rec_sep ??
	      Output this string at the end of each output paragraph.

       -h
       --help Display some help.

       fieldname
	      The fields from the file, that are matched with the regex given.	The fieldnames are case insensitive.

       out_fieldname
	      The fields from the file, that are output for each record.  If the first field listed begins with ^, then the list  of  fields  that
	      follows will NOT be output.

BUGS

       Be  warned  that  the author has only a shallow understanding of the dpkg packaging system, so there are probably tons of bugs in this pro-
       gram.

       This program comes with no warranties.  If running this program causes fire and brimstone to rain down upon the earth, you will be on  your
       own.

       This program accesses the dpkg database directly in places, querying for data that cannot be gotten via dpkg.

AUTHOR

       Adam Heath <doogie@debian.org>

DEBIAN
								 Debian Utilities						       DPKG-AWK(1)
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