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PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?

... $_SERVER docs . Do I have this right regarding which to use for my PHP scripts for simple link definitions used throughout my site? ...
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How to filter files when using scp to copy dir recursively?

... Since you can scp you should be ok to ssh, either script the following or login and execute... # After reaching the server of interest cd /usr/some/unknown/number/of/sub/folders tar cfj pack.tar.bz2 $(find . -type f -name *.class) return back (logout) to local server and scp...
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Regular expression that matches valid IPv6 addresses

I'm having trouble writing a regular expression that matches valid IPv6 addresses, including those in their compressed form (with :: or leading zeros omitted from each byte pair). ...
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Android emulator: How to monitor network traffic?

...o filter out solely emulator traffic, since it is coming from the same src IP. Perhaps the best way would be to set up a very bare VMware environment and only run the emulator in there, at least that way there wouldn't be too much background traffic. ...
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How to sleep for five seconds in a batch file/cmd [duplicate]

Windows's Snipping tool can capture the screen, but sometimes I want to capture the screen after five seconds, such as taking an image being displayed by the webcam. (Run the script and smile at the camera, for example.) ...
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Setting up FTP on Amazon Cloud Server [closed]

...at you already have an EC2 instance created and have associated an Elastic IP Address to it. Step #1: Install vsftpd SSH to your EC2 server. Type: > sudo yum install vsftpd This should install vsftpd. Step #2: Open up the FTP ports on your EC2 instance Next, you'll need to open up the F...
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What is a non-capturing group in regular expressions?

...1). Let's try some substitutions now. Consider the following text: Lorem ipsum dolor sit amet consectetuer feugiat fames malesuada pretium egestas. Now, let's use this dumb regex over it: \b(\S)(\S)(\S)(\S*)\b This regex matches words with at least 3 characters, and uses groups to separate th...
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How to test which port MySQL is running on and whether it can be connected to?

... I thought to be externally visible, it had to be the machine's own IP address and that 0.0.0.0 means the service is not available from anywhere. Do I have that wrong? I have a box running MySQL, the firewall has 3306 open from any IP address but MySQL is refusing the connection, I thought b...
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Mysql adding user for remote access

...o connect remotely you have to have MySQL bind port 3306 to your machine's IP address in my.cnf. Then you have to have created the user in both localhost and '%' wildcard and grant permissions on all DB's as such . See below: my.cnf (my.ini on windows) #Replace xxx with your IP Address bind-addre...
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com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

...achable at all. This can have one or more of the following causes: IP address or hostname in JDBC URL is wrong. Hostname in JDBC URL is not recognized by local DNS server. Port number is missing or wrong in JDBC URL. DB server is down. DB server doesn't accept TCP/IP connections. D...