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Full Discussion: how to fix this awk script?
Top Forums Shell Programming and Scripting how to fix this awk script? Post 302286538 by fedora on Wednesday 11th of February 2009 11:43:45 AM
Old 02-11-2009
I reliazed that problem, but it seems I can not fix the problem, here is the modified script

awk '{ for (i=0; i<=NF; i++)
if($i~/user/)
{a=$i}
else
{a="no"}
{ continue}
{print a}
}' /tmp/test

and the output change to

no
user_d
user_a
no
no

which is not correct at all.


Quote:
Originally Posted by joeyg
I think it is because you are always printing a value. So, you are not over-writing 'a' ni the instance of the 4th line, so when you print the variable, you are getting the last stored value of 'a'.
Perhaps as the first line ater your else, do a
Code:
a=""

to blank out the last 'a' value?
 

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LEARN ABOUT DEBIAN

gr_plot_char

GR_PLOT_CHAR(1) 						   User Commands						   GR_PLOT_CHAR(1)

NAME

       gr_plot_char - plot samples versus time for byte/char data

SYNOPSIS

       gr_plot_char: [options] input_filenames

DESCRIPTION

       Takes  a  GNU  Radio  byte/char binary file and displays the samples versus time.  You can set the block size to specify how many points to
       read in at a time and the start position in the file. By default, the system assumes a sample rate of 1, so in time, each sample is plotted
       versus  the  sample  number.  To set a true time axis, set the sample rate (-R or --sample-rate) to the sample rate used when capturing the
       samples.

OPTIONS

       -h, --help
	      show this help message and exit

       -B BLOCK, --block=BLOCK
	      Specify the block size [default=1000]

       -s START, --start=START
	      Specify where to start in the file [default=0]

       -R SAMPLE_RATE, --sample-rate=SAMPLE_RATE
	      Set the sampler rate of the data [default=1.0]

SEE ALSO

       gr_plot_char(1)	gr_plot_const(1)  gr_plot_fft_c(1)  gr_plot_fft_f(1)  gr_plot_float(1)	 gr_plot_int(1)   gr_plot_iq(1)   gr_plot_psd_c(1)
       gr_plot_psd_f(1)  gr_plot_qt(1)	gr_plot_short(1)

gr_plot_char 3.5						   December 2011						   GR_PLOT_CHAR(1)
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