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Top Forums Shell Programming and Scripting shell script pattern matching Post 302352871 by mirfan on Monday 14th of September 2009 01:02:22 AM
Old 09-14-2009
shell script pattern matching

Thanks for the reply. There is minor misktake in script i already sorted out. Now i have some other problem. which i am saving sql query result in variable. Let say

yahoo=$echo('select yahoo from table | mysql db --skip-column-names')
msn=$echo('select msn from table | mysql db --skip-column-names')

which results

yahoo=NULL
msn=NULL

now i want to compare the results that if yahoo and msn is NULL than don't do anything and if yahoo and msn variables contains email addresses than update another table with those values.

my if condition is not working. Please help me out to sort out this issue.

if [[ -n "$yahoo" && -n "$msn" ]]
then
echo "email found. NOT NULL"
else
echo "email are NULL"
fi

It display result "email are NULL"
while it should display "email found. NOT NULL"
because yahoo & msn both variables contains NULL. Please help me how to compare NULL.
Thanks in advance

~Irfan~
 

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Jifty::Plugin::User::Mixin::Model::User(3pm)		User Contributed Perl Documentation	      Jifty::Plugin::User::Mixin::Model::User(3pm)

NAME
Jifty::Plugin::User::Mixin::Model::User - user model base mixin SYNOPSIS
package MyApp::Model::User; use Jifty::DBI::Schema; use MyApp::Record schema { # column definitions }; # Import columns: name, email and email_confirmed use Jifty::Plugin::User::Mixin::Model::User; DESCRIPTION
This mixin may be added to a model to give your user accounts a name and an email address. This module may be used as the basic building block for building account models in your application. It can be combined with mixins from an authentication plugin to create an object suitable for a given authentication mechanism. SCHEMA
This mixin model adds the following columns to the model. name This is the username/nickname for the user of the account. email This is the email address of the account. It is intended as a bare minimum confirmation of identity and for communication of password resets and other account information. email_confirmed This is a flag indicating whether the user has confirmed ownership of the given email address. METHODS
set_email ADDRESS Whenever a user's email is set to a new value, we need to make sure they reconfirm it. validate_email Makes sure that the email address looks like an email address and is not taken. SEE ALSO
Jifty::Plugin::Authentication::Password, Jifty::Plugin::Authentication::Password::Mixin::Model::User LICENSE
Jifty is Copyright 2005-2010 Best Practical Solutions, LLC. Jifty is distributed under the same terms as Perl itself. perl v5.14.2 2010-12-10 Jifty::Plugin::User::Mixin::Model::User(3pm)
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