modern-web-design-and-development
Traceroute on a Mac, through the broadband company and host to an unresponsive server. Barring a major networking problem, like ...
If you discover that the server is in the middle of a range of 10 to 20 IP addresses that are all broken, then it could well ind ...
When you visit a website, your Web browser communicates with the Web server software behind the scenes, sharing caching informat ...
Checking the web server software with telnet. But because there is a problem, telnet will either not connect (indicating that yo ...
5. Logging Into Your Server The remote investigations are now over, and it’s time to get up close and personal with your errant ...
Using Putty to SSH from a Windows computer. Once you have successfully logged in, you should see something like admin@server$, f ...
If ssh didn’t even connect, then it might be blocked by a firewall or turned off on the server. If it said Permission denied, th ...
If any of them show 100% usage, then the command probably took eons to type, and you will need to free up some space fast. Quick ...
Permanent Fix Clearing out back-ups, old websites and log files will free up a lot of space. Yo u s h o u l d a l s o i d e n t ...
then your server may have run out of workable memory, especially if the swap space (a bit of the hard drive that the server uses ...
The Linux top command shows what is running. Each of the bits of software above is known as a “process.” Big pieces of software ...
Quick Fix The quickest solution is to kill the memory hog. You will need to be root to do this (unless the process is owned by y ...
PPID USER COMMAND 31701 apache /usr/sbin/httpd The PPID is the parent process ID. Now try killing this one: root@server# kill -9 ...
8. Has Something Crashed? Most Linux servers use Apache for the Web server software and MySQL for the database. It is easy to se ...
This listing shows that Apache is indeed running. Quick Fix If Apache or MySQL is not running, then you’ll need to run the comma ...
Once it is located, you can run a command to restart the software. Note that the scripts might have slightly different names, li ...
There are two ways to run a command as root. You can prefix each command with sudo, or you can become root once and for all by t ...
Personally, I don’t mind the ’80s music that plays while I’m on hold with my hosting company. It’s better than complete silence ...
Commonly Confused Bits of jQuery Andy Croxall The explosion of JavaScript libraries and frameworks such as jQuery onto the front ...
parent(selector) This simply matches the one immediate parent of the element(s). It can take a selector, which can be useful for ...
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