Have you ever wanted to find out who is logged onto your Mac? Perhaps you have a multi-user system, or have SSH enabled; either way, you might need to know who is logged in. This simple Terminal command can tell you very easily. Simply head to the command line and type in who. In a blink of an eye, the system will return a list of all the users currently logged on and what date and time they logged in. Pretty nifty, huh?
Cat is a simple way to view the contents of a file. The name is short for “concatenate and display files.” Let’s say you have a file called “test.txt” in your working directory. You think you can delete it, but you’re not sure what the contents of the file are.
Sometimes it may be necessary for you to run a command as an administrator. If you were to get an error like “Error: Insufficient privileges,” just type the sudo command before the command you were actually trying to type. This will in turn cause Terminal to ask you for your password to authenticate you as an administrator.
The sudo command is needed for things like chmod, MacPorts, and other administrative tasks.
Control + C is a way to tell a running command line-based program to quit and return you back to the command line prompt. So, if you were running a ping or other command line tool, just press Control + C to get back control.
We saved the best and easiest for last. By now, you’ve no doubt tried many of the commands, but this can leave your Terminal command rather busy with text flowing here and there. If you want to get rid of all the previous commands and outputs being displayed on the screen, simply enter clear followed by the enter key. This will wipe your Terminal screen clean, ready for you to type more commands.
Here at Mac|Life headquarters, we believe that sharing is caring. That's right: every bit of news that we could possibly want our colleagues to be privy to, we shout it out loud from the industrial-sized soapboxes stashed away under our desks. And when we can't physically make proclamations here at the office, we do so with our Macs and iOS devices on the go. In this edition of Free App Friday, we're featuring three apps that'll help you get the word out about whatever it is you've got going on, and keep you in the know about your neighbor's agenda, too.
Today, Apple released software updates for both iMovie and iDVD to improve the overall quality and stability of the two applications. The iMovie 9.0.2 update fixes an issue that could cause audio playback to be out of sync and is recommended for all users of iMovie '11, while iDVD 7.1.1 update includes an update that ensures compatibility when sending slideshows from iPhoto '11 to iDVD. You can update your system from the Software Update option in your menu bar or from Apple's official site.
SSH (or Secure Shell) is a great service to enable on your Mac at home or work. This useful tool not only enables the ability to remotely access the command line interface of your Mac, but also to remotely access your files through a secure FTP (SFTP) connection, which gives you the ability to transfer files at will. Read on to find out how to transfer files between your own computers over a secure network connection using any modern FTP program.
It’s a love/hate relationship with you, MobileMe. When you work, you’re so wonderfully effortless we forget you’re there. Maybe that’s the problem -- because when you don’t, the pain you can wreak on our calendars and contacts is pretty unforgettable. So if you have a computer or iOS device that’s giving you the MobileMe blues, we can help.
It’s the bane of every serious music fan: the iTunes library. Even with Home Sharing, keeping your jams flowing smoothly between different computers with different iTunes accounts requires a lot of fiddling. So the easiest solution is to purchase an AirPort Extreme and a NAS (short for “network attached storage”) drive, keep your library on the NAS, and use MediaRover to make sure all your computers use that one central library. Here’s how…