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

NAME
mysqmail-courier-logger - logs courier-imap traffic to a mysql database SYNOPSIS
mysqmail-courier-logger subprogram [ args ... ] DESCRIPTION
mysqmail-courier-logger reads the syslog using tail -F, and for each dovecot lines of POP3 and IMAP corresponding to a disconnection, mysq- mail-courier-logger writes the total used bandwidth corresponding to the username. Configuration is read from /etc/mysqmail.conf. mysqmail-courier-logger uses a table corresponding to this one: CREATE TABLE IF NOT EXISTS pop_access ( id varchar(32) NOT NULL default '', uid int(11) NOT NULL default '65534', gid int(11) NOT NULL default '65534', home varchar(255) NOT NULL default '', shell varchar(255) NOT NULL default '', mbox_host varchar(120) NOT NULL default '', crypt varchar(50) NOT NULL default '', passwd varchar(50) NOT NULL default '', active int(11) NOT NULL default '1', start_date date NOT NULL default '0000-00-00', expire_date date NOT NULL default '0000-00-00', quota_size int(11) NOT NULL default '0', type varchar(20) NOT NULL default 'default', memo text,du bigint(20) NOT NULL default '0', another_perso varchar(5) NOT NULL default 'no', redirect1 varchar(255) default NULL, redirect2 varchar(255) default NULL, localdeliver varchar(10) NOT NULL default 'yes', pop3_login_count int(9) NOT NULL default '0', pop3_transfered_bytes int(14) NOT NULL default '0', imap_login_count int(9) NOT NULL default '0', imap_transfered_bytes int(14) NOT NULL default '0', last_login int(14) NOT NULL default '0', PRIMARY KEY (id,mbox_host) ) TYPE=MyISAM To have mysqmail-courier-logger working, you should have issued mkfifo /var/log/courier.fifo to create the fifo and use nohup cat /var/log/courier.fifo | /usr/bin/mysqmail-courier-logger > /dev/null 2>&1 & to launch it. VERSION
This documentation describes mysqmail-courier-logger version 0.1.4. See http://gplhost.com/softwares-mysqmail.html for updates. SEE ALSO
qmail-send(3), syslog(3), logger(8) mysqmail-logger(8)
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