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Top Forums Shell Programming and Scripting How to delete all leading empty lines in a file? Post 302464591 by Scott on Wednesday 20th of October 2010 01:13:19 PM
Old 10-20-2010
Quote:
Originally Posted by durden_tyler
Code:
$
$ cat -n input.txt
     1
     2
     3
     4  test
     5
     6  Test
$
$
$ perl -lne 'if ($x||/./){$x=1; print} else{$x=0}' input.txt
test
 
Test
$
$

tyler_durden
Thanks - I was waiting for you Smilie

Perl is the better choice here, as it can write back to the same file with no need for a temporary file.
 

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Courier::Config(3pm)					User Contributed Perl Documentation				      Courier::Config(3pm)

NAME
Courier::Config - Class providing configuration information for Perl modules related to the Courier MTA SYNOPSIS
use Courier::Config; # Courier base configuration: my $config_dir = Courier::Config->config_dir; my $runtime_dir = Courier::Config->runtime_dir; my $courier_executable = Courier::Config->courier_executable; my $courier_version = Courier::Config->courier_version; # Courier::Filter configuration: my $filter_conf_file = Courier::Config->filter_conf_file; DESCRIPTION
This class provides configuration information for Perl modules related to the Courier MTA, e.g. installation specific file system paths. Courier base configuration The following methods provide information about Courier's base configuration: config_dir: returns string The base configuration directory of Courier. runtime_dir: returns string The directory where Courier keeps the message queue ("msgq", "msgs", "tmp") and courierfilter sockets ("filters", "allfilters"). courier_executable: returns string The full path of the Courier daemon executable. courier_version: returns version The version number of the Courier installation. Courier::Filter configuration The following Courier::Filter configuration information is provided: filter_conf_file: returns string The absolute file name of the Courier::Filter courier-filter-perl configuration file. SEE ALSO
For AVAILABILITY, SUPPORT, and LICENSE information, see Courier::Filter::Overview. AUTHOR
Julian Mehnle <julian@mehnle.net> perl v5.14.2 2011-12-27 Courier::Config(3pm)
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