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The Electric Toolbox Blog has articles about Linux, Apache, Nginx, MySQL, Ja*ascript and PHP. The ten most recent articles can be found below in their entirety. Navigating the sections in the right navigation (under Categories) will bring up all the other posts, and you can also use the search box at the top of the page to find what you might be looking for. Using the ls command to list directory contents from the command line with the -l flag will include the date and time down to the minute, but not show the seconds. This post shows how to display the seconds as well with bash on Linux and OSX. If you dont want the less than a second and timezone offset part, you can format the output yourself, e.g. like this: None of the above will work on OSX, but theres a flag available on OSX which isnt on Linux which makes it all a lot easier: -T which you need Top is a useful command line tool for showing processes running on Linux (and other operating systems) such as how much CPU and memory theyve been using and how long theyve been running, and also showing the system load, CPU and memory usage as a whole. But what if you only If you know the pid number of the process, use the -p flag to specify it: pidof will return the PIDs for the process that matches the input, so you can do this: The only problem with this is that if theres more than one process matching the name then it wont work, because you either have to specify each pid with another -p flag or comma separate the values, and youll get an error like this, when trying to do top for just $ top -p `pidof nginx`     top: unknown option 1 which isnt ideal, because youre only get one of them, or combine it with some sed magic to convert spaces between the ids returned from Another alternative to combining top with pidof is to use pgrep. This can be useful if you need to match e.g. a PHP script which is running from the command line and which you could only match php when running pidof and might return something different from what you want.