setuid and setgid permissions are very useful, however, they can be used to attack a system. Only files that absolutely need these ...

If you want to know how long a command took to execute, you can use the Bash built-in command time. Simply prepend your ...

You can save the output of most Linux commands to files using output redirection. All you need to do it is add a greater ...

Intro to grep

The grep command allows you to search the output of a command or files for a given string or ...

Sometimes when setting up new services or when troubleshooting a problem, you want to watch your log files as they grow. You want to ...

In the Linux terminal, you can send output from one command to another, instead of displaying it to the screen. This allows programs to ...

If you want to know how many lines a certain command outputs or how many lines are in a file, you can use the ...

What are setuid and setgid

setuid and setgid are linux file permissions. When a file has one or both of these ...

Turn on syntax highlighting in vi

1. Make sure you are in Normal mode. If you are unsure, press Esc.
2. Type ...

su allows you to switch to another user (typically root). Unfortunately, your users can attempt to guess the root password this way. You ...

All hard drives have a Master Boot Record (MBR). This record is used when booting your computer. It also holds information about the hard ...

Tinydns records are created using a text configuration file. It also comes with some helper scripts to make it easier to create some basic ...

In order to install almost any program from source, you will first need to install gcc and make. How you install these will depend ...

Show vi line numbers

1. Make sure you are in Normal mode. If you are unsure, press Esc.
2. Type the following ...

Normal/Command

This is the default mode when you start vim. In this mode you can move the cursor around using the arrow ...