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Top Forums Shell Programming and Scripting Delete lines that starts with a certain letter Post 302327349 by kingpeejay on Sunday 21st of June 2009 04:39:55 AM
Old 06-21-2009
Delete lines that starts with a certain letter

How can I delete those lines that starts with a certain letter?
Code:
abc def ghi
xyz abc def
ace gik moq
abe imq gxm

I want to delete the line that starts with "x". Thanks!

Last edited by Yogesh Sawant; 06-22-2009 at 03:17 AM.. Reason: added code tags
 

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Bio::UpdateableSeqI(3pm)				User Contributed Perl Documentation				  Bio::UpdateableSeqI(3pm)

NAME
Bio::UpdateableSeqI - Descendant of Bio::SeqI that allows updates SYNOPSIS
See Bio::SeqI for most of the documentation. See the documentation of the methods for further details. DESCRIPTION
Bio::UpdateableSeqI is an interface for Sequence objects which are expected to allow users to perform basic editing functions (update/delete) on their component SeqFeatures. FEEDBACK
Mailing Lists User feedback is an integral part of the evolution of this and other Bioperl modules. Send your comments and suggestions preferably to the Bioperl mailing list. Your participation is much appreciated. bioperl-l@bioperl.org - General discussion http://bioperl.org/wiki/Mailing_lists - About the mailing lists Support Please direct usage questions or support issues to the mailing list: bioperl-l@bioperl.org rather than to the module maintainer directly. Many experienced and reponsive experts will be able look at the problem and quickly address it. Please include a thorough description of the problem with code and data examples if at all possible. Reporting Bugs Report bugs to the Bioperl bug tracking system to help us keep track of the bugs and their resolution. Bug reports can be submitted via the web: https://redmine.open-bio.org/projects/bioperl/ AUTHOR - David Block Email dblock@gene.pbi.nrc.ca CONTRIBUTORS
Ewan Birney forced me to this... APPENDIX
The rest of the documentation details each of the object methods. Internal methods are usually preceded with a _ delete_feature Title : delete_feature Usage : my $orphanlist=$self->delete_feature($feature,$transcript,$gene); Function: deletes the specified $feature from the given transcript, if $transcript is sent and exists and $feature is a feature of $transcript, or from $gene if the $feature is a feature of $gene, or from $self if $transcript and $gene are not sent. Keeps track of the features of the $gene object that may be left as orphans and returns them as a listref. Example : I want to delete transcript 'abc' of gene 'def', with three exons, leaving only transcript 'ghi' with two exons. This will leave exons 1 and 3 part of 'ghi', but exon 2 will become an orphan. my $orphanlist=$seq->delete_feature($transcript{'abc'},undef,$gene{'def'}); $orphanlist is a reference to a list containing $exon{'2'}; Returns : a listref of orphaned features after the deletion of $feature (optional) Args : $feature - the feature to be deleted $transcript - the transcript containing the $feature, so that a $feature can be removed from only one transcript when there are multiple transcripts in a gene. $gene - the gene containing the $transcript and/or the $feature perl v5.14.2 2012-03-02 Bio::UpdateableSeqI(3pm)
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