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Shell Programming and Scripting
Test with non-zero status does not exit shell
Post 302967116 by chebarbudo on Friday 19th of February 2016 01:12:33 PM
02-19-2016
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i downloaded a text file from metalab.unc.edu called sh.txt and in this reference manual it refers to shell scripting exit status .. at the end of one of the examples that author gave an exit status of 127..
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Hi,
I have tried with the following code;
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Please help.
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LEARN ABOUT CENTOS
ppi::dumper
PPI::Dumper(3) User Contributed Perl Documentation PPI::Dumper(3) NAME
PPI::Dumper - Dumping of PDOM trees SYNOPSIS
# Load a document my $Module = PPI::Document->new( 'MyModule.pm' ); # Create the dumper my $Dumper = PPI::Dumper->new( $Module ); # Dump the document $Dumper->print; DESCRIPTION
The PDOM trees in PPI are quite complex, and getting a dump of their structure for development and debugging purposes is important. This module provides that functionality. The process is relatively simple. Create a dumper object with a particular set of options, and then call one of the dump methods to generate the dump content itself. METHODS
new $Element, param => value, ... The "new" constructor creates a dumper, and takes as argument a single PPI::Element object of any type to serve as the root of the tree to be dumped, and a number of key->value parameters to control the output format of the Dumper. Details of the parameters are listed below. Returns a new "PPI::Dumper" object, or "undef" if the constructor is not passed a correct PPI::Element root object. memaddr Should the dumper print the memory addresses of each PDOM element. True/false value, off by default. indent Should the structures being dumped be indented. This value is numeric, with the number representing the number of spaces to use when indenting the dumper output. Set to '2' by default. class Should the dumper print the full class for each element. True/false value, on by default. content Should the dumper show the content of each element. True/false value, on by default. whitespace Should the dumper show whitespace tokens. By not showing the copious numbers of whitespace tokens the structure of the code can often be made much clearer. True/false value, on by default. comments Should the dumper show comment tokens. In situations where you have a lot of comments, the code can often be made clearer by ignoring comment tokens. True/value value, on by default. locations Should the dumper show the location of each token. The values shown are [ line, rowchar, column ]. See "location" in PPI::Element for a description of what these values really are. True/false value, off by default. print The "print" method generates the dump and prints it to STDOUT. Returns as for the internal print function. string The "string" method generates the dump and provides it as a single string. Returns a string or undef if there is an error while generating the dump. list The "list" method generates the dump and provides it as a raw list, without trailing newlines. Returns a list or the null list if there is an error while generation the dump. SUPPORT
See the support section in the main module. AUTHOR
Adam Kennedy <adamk@cpan.org> COPYRIGHT
Copyright 2001 - 2011 Adam Kennedy. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. perl v5.16.3 2011-02-26 PPI::Dumper(3)