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package IPC::RunSession::Simple; |
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use warnings; |
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use strict; |
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=head1 NAME |
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IPC::RunSession::Simple - Run a simple IPC session in the same vein as IPC::Run & Expect |
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=head1 VERSION |
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Version 0.002 |
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=cut |
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our $VERSION = '0.002'; |
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=head1 SYNOPSIS |
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use IPC::RunSession::Simple |
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$session = IPC::RunSession::Simple->open( "fcsh" ) |
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# Read until the prompt (which doesn't end in a newline) |
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# Timeout after 5 seconds |
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$result = $session->read_until( qr/\(fcsh\) /, 5 ) |
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if ( $result->closed ) { |
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# We encountered an (abnormal) EOF... |
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} |
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elsif ( $result->expired ) { |
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# The timeout got triggered... |
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} |
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else { |
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print $result->content |
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} |
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# Tell 'fcsh' we want to quit |
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$session->write( "quit\n" ) |
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=head1 DESCRIPTION |
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A simple IPC session with read/write capability using L and L |
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=cut |
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use IPC::Open3 qw/ open3 /; |
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use Carp; |
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=head1 USAGE |
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=head2 $session = IPC::RunSession::Simple->open( $cmd ) |
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Create a new session by calling C on $cmd |
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=cut |
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sub open { |
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my $class = shift; |
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my $cmd = shift; |
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my ( $writer, $reader ); |
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# .., undef, ... means that the output (reader) and error handle will be on the same "stream" |
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$cmd = [ $cmd ] unless ref $cmd eq 'ARRAY'; |
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open3 $writer, $reader, undef, @$cmd or croak "Unable to open3 \"$cmd\": $!"; |
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return IPC::RunSession::Simple::Session->new( writer => $writer, reader => $reader ); |
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} |
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sub new { |
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return shift->open( @_ ); |
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} |
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sub run { |
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return shift->open( @_ ); |
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} |
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package IPC::RunSession::Simple::Session; |
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1042
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use Any::Moose; |
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3188
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use IO::Select; |
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has [qw/ writer reader /] => qw/is ro required 1/; |
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has _selector => qw/is ro lazy_build 1/; |
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sub _build__selector { |
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my $self = shift; |
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my $selector = IO::Select->new; |
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$selector->add( $self->reader ); |
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return $selector; |
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} |
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has _read_amount => qw/is rw/, default => 10_000; |
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=head2 $result = $session->read( [ $timeout ] ) |
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Read (blocking) until some output is gotten |
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If $timeout is given, then wait until output is gotten OR the timeout expires (setting $result->expired appropiately) |
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=cut |
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sub read { |
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my $self = shift; |
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my $timeout = shift; |
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return $self->read_until( undef, $timeout ); |
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} |
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=head2 $result = $session->read_until( $marker, [ $timeout ] ) |
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Read (blocking) until some output matching $marker is gotten |
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$marker can either be a regular expression or a code block. If a code block is given, the content accumulated will be available as the first argument and as C<$_> |
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If $timeout is given, then wait until output is gotten OR the timeout expires (setting $result->expired appropiately). Any content collected up to the timeout will be included in $result->content |
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=cut |
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120
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sub read_until { |
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my $self = shift; |
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my $marker = shift; |
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my $timeout = shift; |
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my $result = IPC::RunSession::Simple::Session::Result->new; |
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my $content = ''; |
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128
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while ( 1 ) { |
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if ( $self->_selector->can_read( $timeout ) ) { |
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7256
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my $read_size = sysread $self->reader, my $read, $self->_read_amount; |
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if ( ! $read_size ) { # Reached EOF... |
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$result->closed( 1 ); |
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last; |
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} |
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else { |
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$content .= $read; |
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3
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last unless $marker; |
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2
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16
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if ( ref $marker eq 'Regexp' ) { |
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141
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last if $content =~ $marker; |
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} |
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elsif ( ref $marker eq 'CODE' ) { |
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0
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local $_ = $content; |
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last if $marker->( $content ); |
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} |
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else { |
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die "Don't understand marker ($marker)"; |
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} |
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} |
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} |
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else { |
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$result->expired( 1 ); |
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last; |
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} |
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} |
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158
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4
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18
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$result->content( $content ); |
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160
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4
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12
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return $result; |
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} |
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163
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=head2 $session->write( $content ) |
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165
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Write $content to the input of the opened process |
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167
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=cut |
168
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169
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sub write { |
170
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2
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1913
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my $self = shift; |
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3
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my $content = shift; |
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173
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8
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my $writer = $self->writer; |
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40
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print $writer $content; |
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} |
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177
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=head2 $reader = $session->reader |
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179
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Return the reader filehandle (the STDOUT/STDERR of the process) |
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181
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=head2 $writer = $session->writer |
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183
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Return the writer filehandle (the STDIN of the process) |
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185
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=cut |
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187
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package IPC::RunSession::Simple::Session::Result; |
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189
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1
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1
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11
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use Any::Moose; |
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2
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1
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9
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190
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191
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=head2 $result->content |
192
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193
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The content read via C or C |
194
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195
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=head2 $result->expired |
196
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197
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True if a read returned as a result of taking longer than the specified timeout value |
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199
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=head2 $result->closed |
200
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201
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True if the process closed during the read |
202
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203
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=cut |
204
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205
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has [qw/ content closed expired /] => qw/is rw/; |
206
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207
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=head1 SEE ALSO |
208
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209
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L |
210
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211
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L |
212
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213
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=head1 AUTHOR |
214
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215
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Robert Krimen, C<< >> |
216
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217
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=head1 BUGS |
218
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219
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Please report any bugs or feature requests to C, or through |
220
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the web interface at L. I will be notified, and then you'll |
221
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automatically be notified of progress on your bug as I make changes. |
222
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223
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224
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225
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226
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=head1 SUPPORT |
227
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You can find documentation for this module with the perldoc command. |
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perldoc IPC::RunSession::Simple |
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You can also look for information at: |
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=over 4 |
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=item * RT: CPAN's request tracker |
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=item * AnnoCPAN: Annotated CPAN documentation |
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=item * CPAN Ratings |
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=item * Search CPAN |
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=back |
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=head1 ACKNOWLEDGEMENTS |
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=head1 COPYRIGHT & LICENSE |
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Copyright 2009 Robert Krimen. |
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This program is free software; you can redistribute it and/or modify it |
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under the terms of either: the GNU General Public License as published |
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by the Free Software Foundation; or the Artistic License. |
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See http://dev.perl.org/licenses/ for more information. |
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=cut |
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1; # End of IPC::RunSession::Simple |