Update: with the update of PHP to v5.3.3, the amzn repository now includes php-mcrypt, rendering the steps below unnecessary. At the moment, the amzn repository has v5.3.2 of PHP (while the latest version is v5.3.3) – it also does not offer php-mcrypt. While in previous servers I have included a wider selection of repositories, I… Continue reading Installing mcrypt (PHP) on AWS Linux AMI
Category: Code Snippets
Random bits of useful code I come across – most likely not of my own creation.
Installing APC on AWS Linux AMI
Update: Current versions of Amazon’s Linux AMI include the package php-pecl-apc (v3.1.9 – the same as the latest from PECL) in the repository. Using a package manager is usually preferable to using PECL- it will help you keep up to date, is centrally managed, and minimizes unnecessary dependencies (especially build tools). APC can be installed… Continue reading Installing APC on AWS Linux AMI
Coding with DNA
Alright, this one isn’t quite as exciting as the title suggests. I had the need of a quick script for a bit of biology – genetics. Pretty simple stuff really, but I thought I would post it anyway. Generating random sequences of DNA function randdna($len){ $length=intval($len); $bases=array(‘A’,’C’,’G’,’T’); $dna=””; for ($i=0; $i<$length;$i++){ $dna .=$bases[mt_rand(0,3)]; } return… Continue reading Coding with DNA
Change Permissions of Specific File Types
To change the file permissions for all PHP files to 754: find . -type f -name ‘*.php’ -exec chmod 754 {} \; To find all files with permissions 754: find . -perm -754 To find all files that are not writable by the owner: find . ! -perm -u+w
Fix Line Breaks
To convert all files: $ find . -type f -name -exec dos2unix {} \; To convert specific files (by type): $ find . -type f \( -name “*.php” -o -name “*.txt” -o -name “*.css” \) -exec dos2unix {} \;