What user is apache running as?
You often need to know the username of Apache to assign proper permissions to certain files it will be accessing. To find out: You will probably see multiple users. Ignore…
Installing Perl/CGI on Microsoft Windows
My Configurations My system is configured as follows: Download ActivePerl Download windows MSI version from http://www.activestate.com/store/activeperl/download Install ActivePerl Double click on the downloaded file to install it. By default it…
Introduction to Linux
Linux is the most widely used variant of Unix. Linux is a very powerful operating system which has been around for more than 30 years. Initially, it was primarily been…
Linux: Compressing and Archiving
tar command The tar command is used to collate collections of files into one larger file. Creating archives Suppose we have directory xdir containing many files, we use the following…
Perl: Couldn’t spawn child process
When using Apache and Perl on Windows, it is common to get Couldn’t spawn child process error. The solution is very simple. Verify that you have using the correct directive…
bash: Batch Renaming File Extensions
Suppose I need to change the file extensions of certain files in a directory. The directory address specified by the user is read into the script in line 2. This…
Finding files on Linux
Finding files on unix and linux Find is an extremely useful command for finding files. It searches based a specified condition at a specified directory and descends into all subdirectories…
yum tutorial
yum stands for ‘Yellowdog Updater Modified’. YellowDog Linux is a rpm based distribution of Linux created for the ppc architecture. Fedora Core took up this package manager as of Fedora…
PHP: Array functions
Passing arrays by value and reference The difference between passing by value and passing by reference is that you when pass by value, you are passing a copy of the…
Reading command-line input in C
Following a program which echos whatever you type in the command line. argc is the count of the number of command-line arguments. argv is array of vectors. Each word is…