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Top Forums Shell Programming and Scripting Modify existing values in a file Post 302896893 by blackrageous on Wednesday 9th of April 2014 05:30:04 PM
Old 04-09-2014
What you seem to be trying to do is version control and maintain a history. In general system administration staff don't want to be prompted and want the script to take care of everything. In this case, it could figure out a reference number like
Code:
date +%j%m%d%s

. Your method of putting comments in from of changed stanzas will make the file grow. I would simply have a script that would make a backup of the file with a predetermined reference, number, then call of the vi editor to edit the file. The script could be smart enough to recognize if the file actually changed.
 

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Plack::Runner(3pm)					User Contributed Perl Documentation					Plack::Runner(3pm)

NAME
Plack::Runner - plackup core SYNOPSIS
# Your bootstrap script use Plack::Runner; my $app = sub { ... }; my $runner = Plack::Runner->new; $runner->parse_options(@ARGV); $runner->run($app); DESCRIPTION
Plack::Runner is the core of plackup runner script. You can create your own frontend to run your application or framework, munge command line options and pass that to "run" method of this class. "run" method does exactly the same thing as the plackup script does, but one notable addition is that you can pass a PSGI application code reference directly to the method, rather than via ".psgi" file path or with "-e" switch. This would be useful if you want to make an installable PSGI application. Also, when "-h" or "--help" switch is passed, the usage text is automatically extracted from your own script using Pod::Usage. NOTES
Do not directly call this module from your ".psgi", since that makes your PSGI application unnecessarily depend on plackup and won't run other backends like Plack::Handler::Apache2 or mod_psgi. If you really want to make your ".psgi" runnable as a standalone script, you can do this: my $app = sub { ... }; unless (caller) { require Plack::Runner; my $runner = Plack::Runner->new; $runner->parse_options(@ARGV); return $runner->run($app); } return $app; WARNING: this section used to recommend "if (__FILE__ eq $0)" but it's known to be broken since Plack 0.9971, since $0 is now always set to the .psgi file path even when you run it from plackup. SEE ALSO
plackup perl v5.14.2 2012-03-21 Plack::Runner(3pm)
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