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Top Forums Shell Programming and Scripting reverse search a text file from a specified line Post 302230067 by era on Thursday 28th of August 2008 02:15:06 PM
Old 08-28-2008
Quote:
Originally Posted by danmero
Code:
awk '/B/{a=$0}/A/ && a {print a;a=""}' file

a will be the last occurrence of B.
Intuitive (-;

Actually the && a is a useful addition, I meant to remember to not forget it, but failed. But you're not printing the A lines at all, did I misunderstand that part of the requirements? (Also actually not clear whether the matches should be printed or somehow collected, say, just collect the line numbers for later processing? Easy enough to do, NR is the current line number in awk.)
 

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DROP TEXT SEARCH 
CONFIGURATION(7) SQL Commands DROP TEXT SEARCH CONFIGURATION(7) NAME
DROP TEXT SEARCH CONFIGURATION - remove a text search configuration SYNOPSIS
DROP TEXT SEARCH CONFIGURATION [ IF EXISTS ] name [ CASCADE | RESTRICT ] DESCRIPTION
DROP TEXT SEARCH CONFIGURATION drops an existing text search configuration. To execute this command you must be the owner of the configura- tion. PARAMETERS
IF EXISTS Do not throw an error if the text search configuration does not exist. A notice is issued in this case. name The name (optionally schema-qualified) of an existing text search configuration. CASCADE Automatically drop objects that depend on the text search configuration. RESTRICT Refuse to drop the text search configuration if any objects depend on it. This is the default. EXAMPLES
Remove the text search configuration my_english: DROP TEXT SEARCH CONFIGURATION my_english; This command will not succeed if there are any existing indexes that reference the configuration in to_tsvector calls. Add CASCADE to drop such indexes along with the text search configuration. COMPATIBILITY
There is no DROP TEXT SEARCH CONFIGURATION statement in the SQL standard. SEE ALSO
ALTER TEXT SEARCH CONFIGURATION [alter_text_search_configuration(7)], CREATE TEXT SEARCH CONFIGURATION [create_text_search_configura- tion(7)] SQL - Language Statements 2010-05-14 DROP TEXT SEARCH CONFIGURATION(7)
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