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One of my php script called setoptions.php is hosted on my new vps server. However, it is not working so I setup php error log as described here and, and I see the following warning repeated in my log file:

PHP Warning: fread(): Length parameter must be greater than 0 in /var/www/html/scripts/setoptions.php on line 311

The line no # 311 is as follows in my php script:
$fname = 'myappconfig.php';
$content = fread($fhandle,filesize($fname));

How do I fix this problem under Unix/Apache/php5 server?
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How do I replace upstream "Location: http://server1.cyberciti.biz:8080/app/" http/301 response-header with "Location: http://www.cyberciti.biz/app/" in the response of the proxied server using nginx?
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HowTo: Set Readonly File Permissions On Linux / Unix

How do I set readonly permission for all files stored in /var/www/html directory?
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Nginx: 413 Request Entity Too Large Error and Solution

I'm running nginx as a frond end to php based Apache+mod_fastcgi server. My app lets user upload images upto 2MB in size. When users trying to upload 1.5MB+ size image file using nginx reverse proxy, they are getting the following error on screen:

Nginx 413 Request Entity Too Large

How do I fix this problem and allow image upload upto 2MB in size using nginx web-server working in reverse proxy or stand-alone mode on Unix like operating systems?
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HowTo: Install Ports in Freebsd

How do I install ports in FreeBSD operating systems using the command line options?
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UNIX / Linux: Rsnapshot Restore Backups

I've created the backup server using this tutorial under Redhat and Debian Linux systems. How do I restore files (such as /var/www/html) with rsnapshot backup tool? How do I restore MySQL database dumps with rsnapshot under UNIX or Linux operating systems?
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Bash String Concatenation

How do I join two strings under BASH? I have two strings stored in two different variables (_p=/delta and _u=aqua) and how do I join this and assign it to another variable in bash?
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Linux Syslogd: Nothing Gets Logged Using /dev/log And /jail/apache/dev/log

I've configured my Apache in chrooted jail at /jail/apache directory. However, my syslogd is not working and nothing gets logged using /dev/log and /jail/apache/dev/log. How do I fix this problem under CentOS 5.x AMD64 with SELinux?
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Linux RAM Disk: Creating A Filesystem In RAM

Software RAM disks use the normal RAM in main memory as if it were a partition on a hard drive rather than actually accessing the data bus normally used for secondary storage such as hard disk. How do I create and store a web cache on a RAM disk to improve the speed of loading pages under Linux operating systems?
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CentOS / Redhat Apache mod_ssl Configuration

The mod_ssl module provides strong cryptography for the Apache Web server via the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols. How do I install and configure mod_ssl under CentOS / Fedora / Redhat Enterprise Linux?
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