Need to edit or modify the hosts file on a Mac? This guide will show you exactly how to edit the hosts file in Mac OS. You’ll find hosts in Mac OS X is stored at /private/etc/hosts but it can also be accessed at the more traditional location of /etc/hosts. That said, if you’re looking … Read More
Using an excellent third party tool called terminal-notifier, you can post alerts and messages to Notification Center directly from the command line. This has a myriad of potentially valid uses, but one fantastic use-case is along the same veins of verbally announcing when a command has completed or sending a badge alert, but instead posting … Read More
You’ve always been able to temporarily prevent a Mac from sleeping by using the pmset noidle command or a hot corner, but with modern versions of Mac OS X, Apple has bundled a command line tool dedicated to sleep prevention much like the popular Caffeine app, and appropriately, named it caffeinate. At it’s most simple … Read More
Tab completion is a wonderful feature of shells that make power users lives easier, letting you automatically complete commands, paths, file names, and a variety of other things entered into the command line. It works great as is but you can make it even better by enabling a few features; ignore caps lock and casing … Read More
If you need to use Java, installing the Java Runtime Environment (JRE) in OS X Mountain Lion is necessary even if you had Java previously installed in OS X Lion or Snow Leopard and just performed an upgrade to 10.8. That’s because Mountain Lion uninstalls Java during the upgrade process, this is to insure the … Read More
Sleep can be invoked instantly on any Mac through the command line by running the pmset command or a very simple AppleScript run in Mac OS X. This can be useful for many reasons, whether scripting, system administration, remote management with SSH, or perhaps you just live in the command line. We’ll show you two … Read More
Having a bunch of Terminal tabs named “bash” “bash” and “bash” isn’t too useful or descriptive. Instead, you can rename each tab individually to something more specific by using the Terminal inspector. Before doing so, keep in mind that tabs default to rename themselves automatically based on the currently running process, thus if the terminal … Read More
Mac OS X can sometimes throw permissions errors when trying to delete files or empty the Trash. The most common variations of the errors are usually “Operation cannot be completed because the item “File” is in use” or “because the file is locked”, sometimes you can get around this by just quitting open applications or … Read More
Not long ago we showed you how to announce when a command line task was finished by using the ‘say’ command, but because it speaks aloud it may be inappropriate to use in a quiet environment. A much more subtle notification takes advantage of Terminal apps new usage of the BEL alert, which in OS … Read More
For those that rely on passwordless logins via ssh, rather than generating a new SSH key for a new client machine, you can easily move SSH keys from one computer to another. This is a quick and easy solution for a temporary machine or username or for use on an auxiliary workstation. You could also … Read More
On the rare occasion that you go to put a Mac to sleep and, well, it won’t sleep, there’s an easy to way to find out what the holdup is. Though this is a somewhat technical approach, it should give a good starting point to anyone who’s confused as to why something like automatic sleep … Read More
Paramiko is an SSH module for python that allows for secure connections to be made, and pycrypto is a cryptography toolkit for python. Whether you need one or the other, or both, the easiest way to get them both installed through Mac OS X is through paramiko. No need to use HomeBrew, MacPorts, or any … Read More
iOS Developers typically have to login to Apple’s Developer Center website to manage provisioning and devices. That’s not terribly inconvenient, but it certainly could be easier, and that’s where Cupertino comes in. Cupertino is a third party command line interface to the Apple Dev Center and iOS Provisioning Portal, letting you add and list devices, … Read More
If you compile your own software you probably know that GCC comes bundled in the rather large Xcode package, but what if you just want to have gcc and LLVM without installing the entire Xcode package? Apple now offers an option to do just that, and it’s called Command Line Tools, available as a separate … Read More
DS_Store files are hidden system files that reside within almost every folder of Mac OS X, they contain folder-specific information and settings, like what view to use, icon size, and other metadata pertaining to their directory. Though ds_store files are invisible to the average user, if you’re sharing with a Windows PC or have hidden … Read More
The clock in Mac OS X sets itself automatically by default, but if you want to set the precise time or are looking for a command line solution to set system time, you can do so with a tool called ntpdate, or the standard ‘date’ command.
TotalTerminal is an excellent tweak for those of us who frequently use the command line, it provides instant access to the Terminal from anywhere in Mac OS X with just a keyboard shortcut. Modeled after the classic Quake console, an official Terminal.app prompt drops down from the top of the screen where you can quickly … Read More
If you’ve ever entered a lengthy command into the terminal and upon execution discovered a syntax error, a “no such file or directory”, or “command not found” message because you made a typo, you’ll love this quick tip that lets you rerun the last executed command while replacing the erroneous syntax. You’ll need to be … Read More
