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Top Forums Shell Programming and Scripting to extract string from main string and string comparison Post 302573874 by vivek d r on Wednesday 16th of November 2011 01:34:52 AM
Old 11-16-2011
Question to extract string from main string and string comparison

continuing from my previous post, whose link is given below as a reference
HTML Code:
https://www.unix.com/shell-programming-scripting/171076-shell-scripting.html#post302573569


consider there is create table commands in a file for eg:

Code:
CREATE TABLE `Blahblahblah` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`action` enum('Change','Delete','Add','Locked','Unlocked') COLLATE utf8_unicode_ci DEFAULT 'Change',
`date` datetime DEFAULT NULL,

`reserved1` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
`reserved2` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
`zoneId` int(11) DEFAULT NULL,
) ENGINE=InnoDB AUTO_INCREMENT=2000 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

like the above block there are many blocks in the file, i mean many create table queries in the file.
i have two doubts which i need help in
1) what i need to do is separate out one create table block based on idetifier such as "create table" which is the start and "ENGINE=" as end and seperate it out and write to a file for processing (which i will be doing in a while loop so that every time a new create table overwrite in that particular file for processing).
2) if i have a string "CREATE TABLE `Blahblahblah`" in a variable how to extract `blahblahblah` and store it in a variable..?

help on these is deeply appreciated
thanks Smilie
 

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mysqmail-postfix-logger(8)				      System Manager's Manual					mysqmail-postfix-logger(8)

NAME
mysqmail-postfix-logger - logs smtp traffic to a mysql database SYNOPSIS
mysqmail-postfix-logger subprogram [ args ... ] DESCRIPTION
mysqmail-postfix-logger reads the syslog using tail -F and for each lines, does an action in a selected table in the selected mysql server (configuration done using /etc/mysqmail.conf). All messages that have been delivered are marqued as so in the from and in the to field of the smtp traffic table. mysqmail-postfix-logger uses a table corresponding to this one: CREATE TABLE IF NOT EXISTS smtp_logs ( id int(11) NOT NULL auto_increment, newmsg_id bigint(20) default NULL, bounce_qp int(11) default NULL, bytes int(11) NOT NULL default '0', sender_user varchar(128) NOT NULL default '', sender_domain varchar(128) NOT NULL default '', delivery_id bigint(20) default NULL, delivery_user varchar(128) NOT NULL default '', delivery_domain varchar(128) NOT NULL default '', delivery_success enum('yes','no') NOT NULL default 'no', time_stamp timestamp(14) NOT NULL, PRIMARY KEY (id), UNIQUE KEY bounce_qp (bounce_qp), UNIQUE KEY newmsg_id (newmsg_id), KEY sender_domain (sender_domain), KEY delivery_domain (delivery_domain) ) TYPE=MyISAM; VERSION
This documentation describes mysqmail-postfix-logger version 0.1.4. See http://gplhost.com/softwares-mysqmail.html for updates. SEE ALSO
syslog(3), logger(8) mysqmail-postfix-logger(8)
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