I have never been able to get ksh to work right with SIGARLM. I suspect that ksh uses it internally somehow. Change all occurences of ARLM to USR1 in your script and I think it will work. But also try this:
I am trying to develop a script that will properly handle kill signals particularly kill -2. I have program (_progres) that properly receives the signal if I run it from the command line directly:
_progres -T /tmp -p /home/mejones/signal.p -b 2>&1 &
If I try to put it in a script (i.e.... (2 Replies)
We have written a deamon which have many threads.
We are registering for the SIGTERM and trying to close main thread in this signal handling. Actually these are running on Mac OS X ( BSD unix). When we are unloading the deamon with command launchctl, it's sending SIGTERM signal to our process... (1 Reply)
I'm writing a function right now, and I want to set an alarm to avoid a timeout, here's the general idea of my code:
int amt = -2;
alarm(10);
amt = read(fd, &t->buf, TASKBUFSIZ - tailpos); //do a read
when the alarm goes off, i want to check the value of "amt"
... (1 Reply)
I've read the man page of singal(3) but I still can't quite understand what is the difference between SIGINT, SIGALRM and SIGTERM.
Can someone tell me what is the behavioral difference among these 3 signals in kill command?
Thanks! (2 Replies)
Hello everybody,
I have a little problem with one of my program. I made a plugin for collectd (a stats collector for my servers) but I have a problem to make it run in parallel.
My program gathers stats from logs, so it needs to run in background waiting for any new lines added in the log... (0 Replies)
Hello,
I extracted a list of files in a directory with the command ls . However this is not my computer, so the ls functionality has been revamped so that it gives the filesizes in front like this :
This is the output of ls command : I stored the output in a file filelist
1.1M... (5 Replies)
Is it possible to continue after signal is caught and control goes to function specified in the trap statement? (3 Replies)
Discussion started by: Soham
3 Replies
LEARN ABOUT PHP
mysql_db_query
MYSQL_DB_QUERY(3) 1 MYSQL_DB_QUERY(3)mysql_db_query - Selects a database and executes a query on itSYNOPSIS
Warning
This function was deprecated in PHP 5.3.0, 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:
omysqli_select_db(3) then the query
o PDO::__construct
resource mysql_db_query (string $database, string $query, [resource $link_identifier = NULL])
DESCRIPTION mysql_db_query(3) selects a database, and executes a query on it.
o $database
- The name of the database that will be selected.
o $query
- The MySQL query. Data inside the query should be properly escaped.
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 positive MySQL result resource to the query result, or FALSE on error. The function also returns TRUE/ FALSE for INSERT/ UPDATE/
DELETE queries to indicate success/failure.
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | This function now throws an E_DEPRECATED notice. |
| | |
+--------+---------------------------------------------------+
Example #1
mysql_db_query(3) alternative example
<?php
if (!$link = mysql_connect('mysql_host', 'mysql_user', 'mysql_password')) {
echo 'Could not connect to mysql';
exit;
}
if (!mysql_select_db('mysql_dbname', $link)) {
echo 'Could not select database';
exit;
}
$sql = 'SELECT foo FROM bar WHERE id = 42';
$result = mysql_query($sql, $link);
if (!$result) {
echo "DB Error, could not query the database
";
echo 'MySQL Error: ' . mysql_error();
exit;
}
while ($row = mysql_fetch_assoc($result)) {
echo $row['foo'];
}
mysql_free_result($result);
?>
Note
Be aware that this function does NOT switch back to the database you were connected before. In other words, you can't use this
function to temporarily run a sql query on another database, you would have to manually switch back. Users are strongly encouraged
to use the database.table syntax in their sql queries or mysql_select_db(3) instead of this function.
mysql_query(3), mysql_select_db(3).
PHP Documentation Group MYSQL_DB_QUERY(3)