The command line interface is an alternate method of interacting with macOS and Mac OS X, relying on text based command entry to execute commands and perform tasks. It is accessed on the Mac by using the Terminal application. Generally, the command line is considered advanced, and thus it’s usage tends to be more complex than many standard procedures on a Mac.
If you’re new to using the command line and trying to learn the Terminal, setting a cheat sheet of command syntax for commonly used tricks as your background picture can be a pretty helpful way to help remember commands.
If you’re tired of looking over a man (manual) page within the Terminal, you can use a nifty command sequence to launch any specified man page into the Preview app of Mac OS X. This is done by piping the standard man output into the open command and Preview. Launching the man Page into Preview … Read More
You already know that you can take screenshots from the command line on Mac OS X, and now using a simple tool called webkit2png you can quickly take a screenshot of any webpage from the command line too.
Mac OS X includes Samba support by default, which allows for communication between OS X and Windows PC hardware. SMB is what enables simple Mac to Windows file sharing, but you can also go further and utilize the command line of OS X or Linux to remotely monitor, start, and stop services running on Windows … Read More
Need to change the hostname of a Mac? For most people if you want to change your Mac computer name you just do it through the Sharing system preference, it’s quick and very easy. For those of us that are more geekishly inclined, we like to do things through the Terminal. This tutorial will show … Read More
The quickest way to set your IP address from the command line is to use the versatile and powerful ipconfig utility, which is bundled directly with Mac OS X. We’ll show you how to set an IP address with ipconfig by retrieving one from a DHCP server, and also demonstrate how to set a specific … Read More
Anytime that you run a command through the Terminal directly by a command name like ls or dscacheutil, your Mac is looking through a series of directories for that command to exist. This list of directories is called the PATH, and it’s a carry over from the unix underpinnings of Mac OS X. As you … Read More
By pasting the following small function into your .profile, you’ll be able to print random tweets from any Twitter feed:
If you use the command line frequently, chances are you may have some bad command line habits. IBM’s DeveloperWorks site has posted 10 good UNIX usage habit tips, some of them are just pretty handy tricks in general and if you’re new to the Mac OS X Terminal, you’ll probably learn something since practically all … Read More
Often overlooked, the Terminal can be used to accomplish all sorts of fun stuff. Something that you may find handy, is the ability to Tweet using built in Mac OS X command line utilities like curl. Yes, curl! Now of course this is not a full featured Twitter client by any means, but if you … Read More
If there was one command I would really complain about not being on Mac OS X, it would be “watch”. Watch is one of those great pieces of software that is tiny and completely out of the way, but when needed it will be a life saver. We’re going to show you three different ways … Read More
If you have two directories you need joined together, you can either drag and drop everything together, use the ‘mv’ command to move files manually, or, as we’ll show here, you can quickly merge any two directories within Mac OS X by using the command line tool ditto or ‘cp’. The command line is generally … Read More
In some situations, you may need to repair a Macs disk permissions but be unable to access the Disk Utility app, perhaps due to remote management or because of a problem with something in OS X. Fortunately there’s another method you can use to repair disk permissions in Mac OS X, accessible through the command … Read More
I came across an excellent alternative to the command line ‘ping’ and ‘traceroute’ tools recently. It’s a utility called mtr, which combines the statistics and prints their functionality into a single network diagnostic tool, reporting details on the network connection between your host machine and whatever the destination host is, determining the address of each … Read More
If you’re troubleshooting a Mac machine with some particularly odd issues that routine measures don’t seem to be resolving, it can be helpful to list what kernel extensions are activated, particularly third party kexts loaded in OS X. Determining what kernel extensions are loaded and running in Mac OS X is rather easy, and using … Read More
Have you ever tried to run a command line tool to discover that you don’t have the necessary privileges to use it? Or perhaps the command itself actually requires root access to run at all? You’ll typically experience this with a ‘permission denied’ type of error message in terminal. Rather then type out the entire … Read More
Need to access the current Finder directory immediately within the Terminal? While newer Mac OS X versions have an option to enable “New Terminal at Folder” in Services, prior releases do not, so instead you can get cdto, it’s one of those must-have apps for anyone who’s constantly switching between the command line and the … Read More
You can resize, rotate, or flip any image file via the Mac’s Terminal using the powerful command line sips tool. Manipulating images with sips is practically instantaneous, and if you need to quickly resize, rotate, or flip an image file and want to stay within the command line, it can definitely beat firing up a … Read More
