What is a journaling filesystem?
A journaling file system is a file system that logs changes that you make to a 'journal'. The journal itself is like a circular log that tracks, records and maintains…
Run a cron more than once per minute
Since a cron job lists the timeframe in which a task will run incrementally using the minute, hour, day, month and day of the week settings, it seems difficult to…
RDNS
Here is a short how-to for PTR/RDNS 1. You must have reverse authority delegated to you from your hosting provider. Though common wisdom in forums says most providers do not…
MYSQL tuning-primer
MySQL Performance Tuning Primer Script This script takes information from "SHOW STATUS LIKE..." and "SHOW VARIABLES LIKE..." to produce sane recommendations for tuning server variables. It is compatible with all…
Use DD to create empty test file
This dd command allows you to create an "empty" file of a specifically desired size. Creating these arbitrary heavy files, may be useful for testing purposes. Use the command below:…
Quick phpinfo from CLI
This will give you a quick look at the php.ini file echo "< ?php phpinfo(); ?>" |php |less also, if you need to check if a specific module is installed…