You are testing an Apache web application and it crashes... This is common for memory- or process-intensive tasks but a hassle if all the other websites served by Apache also go down.

Read on to learn how to launch a second instance of Apache in order for other websites to not be effected in the case of a crash.

One line find and replace

find . -name '*.txt' -print0 |xargs -0 perl -pi -e 's/find/replace/g'

*.txt - files to find

find - pattern to find

replace - replace found pattern

Have you ever tried importing large MySQL backup files via PHPMyAdmin? If yes, you would probably have experienced timeout errors, and PHPMyAdmin will tell you to reload the page... but the same thing happens again. Care for the solution?