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Top Forums Shell Programming and Scripting Shell script to find weblogic home directory Post 302916786 by Don Cragun on Friday 12th of September 2014 12:19:38 AM
Old 09-12-2014
Quote:
Originally Posted by spgreddy
Hi Don,

Thank you for your support. Forget above script currently I am looking a shell script by reading the string (/u01/app/oracle/Middleware/wlserver_10.3/server/lib/weblogic.jar) and display required output as shown below

/u01/app/oracle/Middleware/wlserver_10.3

Please help us to resolve this

Regards,
Spgreddy
I can't figure out what this means. Does the string you are reading contain parentheses as shown? Is this string in a file? Is this string in a shell variable?

How is your script supposed to know what part of the string is the part you want to return? Are you trying to remove the last three components of the pathname stored in the string? Are you trying to remove all components of the pathname after the component that starts with wlserver? Are you trying to remove all components from the pathname stored in the string after the component that ends with a decimal digit? Are you trying to remove the 6th / and everything that follows it from your string?

What shell are you using? What OS are you using?
 

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

NAME
Plack::Builder - OO and DSL to enable Plack Middlewares SYNOPSIS
# in .psgi use Plack::Builder; my $app = sub { ... }; builder { enable "Deflater"; enable "Session", store => "File"; enable "Debug", panels => [ qw(DBITrace Memory Timer) ]; enable "+My::Plack::Middleware"; $app; }; # use URLMap builder { mount "/foo" => builder { enable "Foo"; $app; }; mount "/bar" => $app2; mount "http://example.com/" => builder { $app3 }; }; # using OO interface my $builder = Plack::Builder->new(); $builder->add_middleware('Foo', opt => 1); $app = $builder->mount('/app' => $app); $app = $builder->to_app($app); DESCRIPTION
Plack::Builder gives you a quick domain specific language (DSL) to wrap your application with Plack::Middleware subclasses. The middleware you're trying to use should use Plack::Middleware as a base class to use this DSL, inspired by Rack::Builder. Whenever you call "enable" on any middleware, the middleware app is pushed to the stack inside the builder, and then reversed when it actually creates a wrapped application handler. "Plack::Middleware::" is added as a prefix by default. So: builder { enable "Foo"; enable "Bar", opt => "val"; $app; }; is syntactically equal to: $app = Plack::Middleware::Bar->wrap($app, opt => "val"); $app = Plack::Middleware::Foo->wrap($app); In other words, you're supposed to "enable" middleware from outer to inner. INLINE MIDDLEWARE
Plack::Builder allows you to code middleware inline using a nested code reference. If the first argument to "enable" is a code reference, it will be passed an $app and is supposed to return another code reference which is PSGI application that consumes $env in runtime. So: builder { enable sub { my $app = shift; sub { my $env = shift; # do preprocessing my $res = $app->($env); # do postprocessing return $res; }; }; $app; }; is equal to: my $mw = sub { my $app = shift; sub { my $env = shift; $app->($env) }; }; $app = $mw->($app); URLMap support Plack::Builder has a native support for Plack::App::URLMap with "mount" method. use Plack::Builder; my $app = builder { mount "/foo" => $app1; mount "/bar" => builder { enable "Foo"; $app2; }; }; See Plack::App::URLMap's "map" method to see what they mean. With builder you can't use "map" as a DSL, for the obvious reason :) NOTE: Once you use "mount" in your builder code, you have to use "mount" for all the paths, including the root path ("/"). You can't have the default app in the last line of "builder" like: my $app = sub { my $env = shift; ... }; builder { mount "/foo" => sub { ... }; $app; # THIS DOESN'T WORK }; You'll get warnings saying that your mount configuration will be ignored. Instead you should use "mount "/" => ..." in the last line to set the default fallback app. builder { mount "/foo" => sub { ... }; mount "/" => $app; } Note that the "builder" DSL returns a whole new PSGI application, which means o "builder { ... }" should normally the last statement of a ".psgi" file, because the return value of "builder" is the application that actually is executed. o You can nest your "builder" block, mixed with "mount" (see URLMap support above): builder { mount "/foo" => builder { mount "/bar" => $app; } } will locate the $app under "/foo/bar" since the inner "builder" block puts it under "/bar" and it results a new PSGI application which is located under "/foo" because of the outer "builder" block. CONDITIONAL MIDDLEWARE SUPPORT
You can use "enable_if" to conditionally enable middleware based on the runtime environment. See Plack::Middleware::Conditional for details. SEE ALSO
Plack::Middleware Plack::App::URLMap Plack::Middleware::Conditional perl v5.14.2 2012-05-17 Plack::Builder(3pm)
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