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Full Discussion: Time and Date
Top Forums UNIX for Beginners Questions & Answers Time and Date Post 302983730 by RavinderSingh13 on Saturday 15th of October 2016 02:42:59 PM
Old 10-15-2016
Quote:
Originally Posted by Demas
Sorry, I'm not explaining myself properly
I have a sh file with this:
Code:
echo "Name user:"
                read user
            echo "Name channel:"
                read channel
                    if [[ $(grep -c $user registrations.txt | grep $channel registrations.txt) -eq 0 ]]; then
                        echo date and time  $user $channel >> registrations.txt
                else
                    "Association already exists"
                fi;;

When I execute it I need it to look like this in the registrations.txt file
Hello Demas,

I am not sure what you are actually trying to do with following condition.
Code:
if [[ $(grep -c $user registrations.txt | grep $channel registrations.txt) -eq 0 ]];

Because what |(pipe) does is, it gets the output from previous command and push it as standard input for the next command, so in above condition you are trying to check the search count of variable named user's value into file named registrations.txt and then whatever count(number) comes you are then piping it to next command but here again grep is searching/looking for variable named channelin file registrations.txt and then you are comparing it's value to 0.

IMHO it doesn't look correct. So could you please let us know sample Input_file and expected output with all conditions so that we could try to help you in solving this problem.

Thanks,
R. Singh
 

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Email::Date::Format(3)					User Contributed Perl Documentation				    Email::Date::Format(3)

NAME
Email::Date::Format - produce RFC 2822 date strings SYNOPSIS
use Email::Date::Format qw(email_date); my $header = email_date($date->epoch); Email::Simple->create( header => [ Date => $header, ], body => '...', ); DESCRIPTION
This module provides a simple means for generating an RFC 2822 compliant datetime string. (In case you care, they're not RFC 822 dates, because they use a four digit year, which is not allowed in RFC 822.) FUNCTIONS email_date my $date = email_date; # now my $date = email_date( time - 60*60 ); # one hour ago "email_date" accepts an epoch value, such as the one returned by "time". It returns a string representing the date and time of the input, as specified in RFC 2822. If no input value is provided, the current value of "time" is used. "format_date" is exported only if requested. email_gmdate my $date = email_gmdate; "email_gmdate" is identical to "email_date", but it will return a string indicating the time in Greenwich Mean Time, rather than local time. "format_gmdate" is exported only if requested. PERL EMAIL PROJECT
This module is maintained by the Perl Email Project <http://emailproject.perl.org/wiki/Email::Date::Format> AUTHOR
Ricardo SIGNES, <rjbs@cpan.org>. Adapted from Email::Date, by Casey West. COPYRIGHT
Copyright (c) 2007, Ricarod SIGNES. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.12.1 2007-12-03 Email::Date::Format(3)
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