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Full Discussion: Perl output with negative and positive numbers
Top Forums Shell Programming and Scripting Perl output with negative and positive numbers Post 302380621 by rbl-blacklight on Tuesday 15th of December 2009 04:47:17 PM
Old 12-15-2009
Perl output with negative and positive numbers
Hello,

For my weather station I have made a little perl script to put the data into cacti. The next problem I have.
I can only get positive numbers or negative numbers.

What do I do:
Though a shell scrip I call the perl script.
Shell script:
Code:
#!/bin/sh
cat data.txt | stats.pl

Perl script:
Code:
while(<STDIN>) {
chomp;
if (s/^buiten_t[ ]*[:][ ]*(\D+\.*\d+\.*\d+).*/\1/) {
print "buiten_t:$_ ";
}

Whith this input I can only get the negative numbers.
Like Buiten_t:-6.5
When I do:
Code:
if (s/^buiten_t[ ]*[:][ ]*(\d+\.*\d+).*/\1/) {

I get only the positive numbers.
Buiten_t:28.6

If I let the
Code:
if (s/^buiten_t[ ]*[:][ ]*(\D+\.*\d+\.*\d+).*/\1/) {

for the positive numnbers there is a space in the output.
The ouput is then Buiten_t: 28.6

How do I make the script the it can workt with both settings?
Output like Buiten_t:-6.5 or Buiten_t:28.6

thnx
Last edited by Scott; 12-15-2009 at 06:06 PM.. Reason: Please use code tags - and no fancy colours and fonts. Reading RE's is hard enough. Thanks.
 

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LEARN ABOUT OPENSOLARIS

script

script(1)							   User Commands							 script(1)

NAME

       script - make record of a terminal session

SYNOPSIS

       script [-a] [filename]

DESCRIPTION

       The  script  utility  makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the
       record is saved in the file typescript. See WARNINGS.

       The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends
       when the forked shell exits or when Control-d is typed.

OPTIONS

       The following option is supported:

       -a    Appends the session record to filename, rather than overwriting it.

NOTES

       script places everything that appears on the screen in filename, including prompts.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

WARNINGS

       script  can  pose  a  security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a
       privileged user, that is, root. Be sure that typescript is not a link before running script.

SunOS 5.11							    30 Jan 2004 							 script(1)
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