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Full Discussion: Sending awk variables into curl in a bash script
Top Forums Shell Programming and Scripting Sending awk variables into curl in a bash script Post 302955374 by phaethon on Wednesday 16th of September 2015 09:14:13 PM
Old 09-16-2015
Sending awk variables into curl in a bash script
Hello experts!

I have a file1 with the following format (yr,day, month, hour,minute):
Code:
201201132435
201202141210
201304132030
201410100110
...

What i want to do is to assign variables and then use them in the curl command to download the text of each event from a web page.

What I have done so far is:
Code:
#!/bin/sh
#
yr=`awk '{$1=substr($1, 6, 2)}1'  file1`
mo=`awk '{$1=substr($1, 8, 2)}1'  file1`
da=`awk '{$1=substr($1, 10, 2)}1'  file1`
ho=`awk '{$1=substr($1, 12, 2)}1'  file1`
mi=`awk '{$1=substr($1, 14, 2)}1' file1 `
#
curl -L http://webpage/${yr}/${mo}/track${yr}${mo}${da}${ho}${mi}$_infos.html

but it seems that the variables are not evolving gradually all together but separately
 

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LEARN ABOUT DEBIAN

perl::critic::policy::builtinfunctions::prohibitlvaluesubstr

Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSuUser(Contributed Perl DocPerl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3pm)

NAME

       Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr - Use 4-argument "substr" instead of writing "substr($foo, 2, 6) = $bar".

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       Conway discourages the use of "substr()" as an lvalue, instead recommending that the 4-argument version of "substr()" be used instead.

	   substr($something, 1, 2) = $newvalue;     # not ok
	   substr($something, 1, 2, $newvalue);      # ok

       The four-argument form of "substr()" was introduced in Perl 5.005.  This policy does not report violations on code which explicitly
       specifies an earlier version of Perl (e.g. "use 5.004;").

CONFIGURATION

       This Policy is not configurable except for the standard options.

SEE ALSO

       "substr" in perlfunc (or "perldoc -f substr").

       "4th argument to substr" in perl5005delta

AUTHOR

       Graham TerMarsch <graham@howlingfrog.com>

COPYRIGHT

       Copyright (c) 2005-2011 Graham TerMarsch.  All rights reserved.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2012-06-07	 Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr(3pm)
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