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In this Linux tip, we’re going to take a quick look at the /etc/shadow file on Linux systems. It contains a lot of useful information pertaining to user accounts – and is a file that can only be viewed or changed with root or sudo access.
In this Linux tip, we’ll look at how you can “source” files on the Linux command line. “Sourcing” means reading the file and running the commands that it contains – even if the file isn’t set up with execute permissions. There are two w...
In this Linux tip, we’re going to look at timestamps used on Linux systems. There are actually three of them and they represent the date and time that the file was last accessed, the time it was last modified and the time it was last changed. Modif...
In this Linux tip, we take a look at the who command – a command that tells you who is logged into the system. If you’re working on a Linux server, you might see that a number of people are logged in. The who command also tells you where the user...
In this Linux tip, we’re going to take a look at epoch time – the way Unix and Linux systems store dates and times. Unix and Linux systems don’t store dates and times in a way that includes months, days and years in the way that you see them di...
In this Linux tip, we’re going to look at the –help option that is available with most Linux commands. Type a command name followed by the argument --help and you will get some information on the command and its options.
This Linux tip explains how to locate files based on several different criteria.
In this Linux tip, we take a look at long file listings – using the ls -l command to examine the provided details.
In this Linux tip, we’re going to look at the easiest way to empty a file of its contents while not deleting the file. All you have to do is point a greater-than sign at a file and its contents are removed.
In this Linux tip, we’re going to look at if-then-else and if-then-elsif commands. Both are frequently used in bash scripts to make running a series of commands much easier.
