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Top Forums Shell Programming and Scripting help: infinant loop script - host ping test Post 302115209 by ghostdog74 on Monday 23rd of April 2007 06:11:56 AM
Old 04-23-2007
an awk example, not including infinite pinging.
Code:
#!/bin/bash
awk '	function pinger(count,ip) {
		command = "ping -c "count " " ip		
		while (( command | getline res )> 0 ) {	
			if ( res ~ /0 received|100% packet loss/ ) {
				close(command)
				return 100			 
			}
		}
	close(command)
	return 0
	}	
	BEGIN { 	
	IP="x.x.x.x"	
	if ( pinger(2,IP) == 100 ) {
		print IP " Not up"
		c = 0
		while ( c < 4 ) {			
			if ( pinger(2,IP) == 100 ) {
				print IP " Not up yet" 
			}
			c=c+1
		}
	} else { print IP " up" }
}'

 

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GSL-HISTOGRAM(1)					      General Commands Manual						  GSL-HISTOGRAM(1)

NAME
gsl-histogram - compute histogram of data on stdin SYNOPSYS
gsl-histogram xmin xmax [n] DESCRIPTION
gsl-histogram is a demonstration program for the GNU Scientific Library. It takes three arguments, specifying the upper and lower bounds of the histogram and the number of bins. It then reads numbers from `stdin', one line at a time, and adds them to the histogram. When there is no more data to read it prints out the accumulated histogram using gsl_histogram_fprintf. If n is unspecified then bins of inte- ger width are used. EXAMPLE
Here is an example. We generate 10000 random samples from a Cauchy distribution with a width of 30 and histogram them over the range -100 to 100, using 200 bins. gsl-randist 0 10000 cauchy 30 | gsl-histogram -100 100 200 > histogram.dat A plot of the resulting histogram will show the familiar shape of the Cauchy distribution with fluctuations caused by the finite sample size. awk '{print $1, $3 ; print $2, $3}' histogram.dat | graph -T X SEE ALSO
gsl(3), gsl-randist(1). AUTHOR
gsl-histogram was written by Brian Gough. Copyright 1996-2000; for copying conditions see the GNU General Public Licence. This manual page was added by the Dirk Eddelbuettel <edd@debian.org>, the Debian GNU/Linux maintainer for GSL. GNU
GSL-HISTOGRAM(1)
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