09-04-2009
comparing multiple variables by 'if then'
Hi,
I am a noob at shell scripting.
basically I am trying to compare row counts from 8 tables in different databases. I have managed to get the row counts using awk from the spool files for both databases.
now I have 16 variables with me
for database 1 :
$A
$B
$C
$D
$E
$F
$G
$H
for database 2:
$A1
$B1
$C1
$D1
$E1
$F1
$G1
$H1
now i want to compare the row counts if they r equal....if so, the script shud continue and execute my next script say 'next.sh' lying in the same directory
else it shud give an error and mail to the user.
what i am trying to do is
if $A = $A1 and
$B = $B1
...
... and
$H=$H1
then
all 8 variables must be equal to each other before continuing else the script shud error out.
PLease help
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LEARN ABOUT PHP
mysql_list_dbs
MYSQL_LIST_DBS(3) 1 MYSQL_LIST_DBS(3)
mysql_list_dbs - List databases available on a MySQL server
SYNOPSIS
Warning
This function was deprecated in PHP 5.4.0, and will be removed in the future, along with the entirety of the original MySQL exten-
sion. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more
information. Alternatives to this function include:
oSQL Query:
SHOW DATABASES
resource mysql_list_dbs ([resource $link_identifier = NULL])
DESCRIPTION
Returns a result pointer containing the databases available from the current mysql daemon.
o $
link_identifier -The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect(3) is
assumed. If no such link is found, it will try to create one as if mysql_connect(3) was called with no arguments. If no connection
is found or established, an E_WARNING level error is generated.
Returns a result pointer resource on success, or FALSE on failure. Use the mysql_tablename(3) function to traverse this result pointer, or
any function for result tables, such as mysql_fetch_array(3).
Example #1
mysql_list_dbs(3) example
<?php
// Usage without mysql_list_dbs()
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
$res = mysql_query("SHOW DATABASES");
while ($row = mysql_fetch_assoc($res)) {
echo $row['Database'] . "
";
}
// Deprecated as of PHP 5.4.0
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
$db_list = mysql_list_dbs($link);
while ($row = mysql_fetch_object($db_list)) {
echo $row->Database . "
";
}
?>
The above example will output something similar to:
database1
database2
database3
Note
For backward compatibility, the following deprecated alias may be used: mysql_listdbs(3)
mysql_db_name(3), mysql_select_db(3).
PHP Documentation Group MYSQL_LIST_DBS(3)