Sometimes server load is caused by a single user, that runs lots of stuff. In order to prevent server overload you should detect most heavy processes by using ps. Then you may need to know what processes are run by this user. This will be done using ps -u <username>. If you think that al user processes should… Read More »
This is my first post in this category as the original function of this blog was to explode the secrets I know. But… I cannot know everything and sometimes I also have questions that require hours of searching. I hope to find the answer in some comments that should appear as I do already have visitors from search… Read More »
Today I will show a simple command that will allow you to restore a database from a previously made sql file. No matter, how the backup was done, if it has sql commands, you will restore it in the fastest possible way. If your database backup file exceeds 10 megabytes, it’ll be very hard to restore it using… Read More »
Most of us rely on a single antivirus software that is installed on the PC. No matter it is free or paid, you rely on its security and check all the incoming data using it. For example, CDs and USB flash drives are checked when they are inserted, e-mail attachments are scanned, etc. There is an online service… Read More »
When you need to work with Flash in PHP, you have to install Ming. Ming is an open source library that allows you to deal with flash from command line. We will use it for our PHP scripts. First of all, we need to download the library from Sourceforge. Link that you can find on php.net leads to… Read More »
How often do you update your Linux server software? If you have chosen yum to do this for you, you should have some packages that aren’t really necessary for update; they can even cause yum errors. In order to exclude some packages you should use of two methods proposed in this post. The first one is to add… Read More »
If you’re using temporary files you should notice that after some time it is hard to delete them as their number is growing. If you have many files and try to delete them with a usual command rm -f you should receive something like this: [root@server html]# rm -f * -bash: /bin/rm: Argument list too long What to… Read More »
Sometimes it is useful to use custom error pages on all user domains (In case of maintenance, new software installation, etc). It’s a pity you are unable to do it for all user domains in Directadmin, just for a single one. But htaccess comes to help us this time. Go to /home/admin/domains (certainly, replace admin with your username)… Read More »
Recently I had to decode a string that was encoded with javascript, using ascii codes of symbols. In JavaScript everything looks simple – unescape() allows to get a readable string. But I had to do it with PHP and the first thought was to use chr and ord functions. But there was a simple solution as usual. I… Read More »
Today I’ll show you the script that allows to get Google Pagerank value for any site you like. Note, that Google limits the number of toolbar queries per IP per day. <?php function StrToNum($Str, $Check, $Magic) { $Int32Unit = 4294967296; $length = strlen($Str); for ($i = 0; $i < $length; $i++) { $Check *= $Magic; if ($Check >=… Read More »