If you want to quickly see what processes are wasting all of your memory, you can do so with a simple command line that filters the output from ps to sort by memory usage, and return only the ten biggest memory hogs.
If you’ve got a web application that uploads files to the server through a PHP script, you might have noticed that by default you can’t upload terribly large files. Here’s how to change it.
Gone are the days of finding a good FTP client and reading man pages trying to find out how the heck fuse works – mounting remote folders in Ubuntu nowadays is a breeze.
Linux has a rich set of commands for manipulating and accessing files. The du utility gives information on disk usage, and the sort utility can sort the results. Finally, we can run those results through the head command, which gives you the top 10 lines outputted through any other command. We’ll chain the commands together to get the output that we want.
Nothing’s worse than booting up your laptop in a public place and subjecting everyone around you to the Ubuntu login sounds. We’ll show you how to disable both login sounds for good.
Have you ever used a tail -f on a logfile, only to find that it’s scrolling by way too fast for you to deal with? If you know exactly what you’re looking for, you can always grep the contents, but often you aren’t sure what you need to see. In this case, it’s useful to reverse grep instead.
Changing the group a user is associated to is a fairly easy task, but not everybody knows the commands, especially to add a user to a secondary group. We’ll walk through all the scenarios for you.
If you have ever found yourself in need of a terminal available at all times in Linux, here are four different ways you can bring up a terminal with a maximum of three buttons.
This page will explain how to renew your DHCP address when using Linux.
When you get a dedicated virtual server to run your website, chances are good that it’s configured for everybody, and not customized to maximize performance for running a website.
If you want to move all files of a particular file type into a single directory, you can use the find command to do this easily in Linux.
If you can’t stand the automatic hyperlinking in Microsoft Word, you might be hard-pressed to find the right place to disable it in Office 2007, since all the settings are hidden so well compared to previous versions.
If you are getting the following error while trying to change the default fat32 partition on a new drive to another linux partition type, I might have the answer for you.
If you get this error in your logs when trying to setup public key authenticated automatic logins, the problem is a permissions one.
If you’ve ever needed to change the hostname for Red Hat Linux, CentOS or similar operating systems, you can do so easily with one simple command.
If you want to setup SSH keys to allow logging in without a password, you can do so with a single command.
This article will cover how to use the port-forwarding feature in SSH to accomplish tunneling from one machine to another.
If you’ve moved an Ubuntu virtual machine or modified it and then suddenly had a problem getting networking to work, you might want to read through this page, because I’ve figured out a workaround to get it working again.
If you’ve used the GUI tool to share a folder with your Ubuntu guest machine, you probably are confused why it’s not showing up anywhere.
This page will explain how you can use ISO image files in Linux.
This page will show us how to create a list of files and folders ordered by size using standard Linux commands.
This guide will attempt to explain how to use iptables on linux in easy to understand language.
Have you ever needed to quickly share a folder with another machine? Rather than deal with samba, nfs, or apache, you can just run a simple command instead.
If you are getting this error then you probably reset the permissions on your hidden .ssh directory in your user folder, and your keys aren’t going to work anymore. It’s very important that these files not be writable by just anybody with a login to the box, so openssh will give you an error if you try to use them.
If you want to “map a drive” from a Linux computer to a shared folder on a Windows computer or a shared folder on a Linux computer running Samba, there’s a simple way that you can do this from the command line.