It only takes a minute to sign up. I'm getting more interested in using Terminal as an alternative way to address solutions on my Mac. The command you are after is shutdown. This informs all users that the machine is going to be shutdown and tells all apps to close files etc. How shutdown works is by sending a sigterm to all processes which should then deal with that e. The signals are not sent via the normal key message queue so Apps have to deal with this separately to the code that gets called from quit on the menu.
A good app should call common code from both. This other answer shows how to shutdown as if you hit the menu options. But note that apps can cancel this shutdown. All System Events commands above send Apple events to the loginwindow process. If you do feel like putting a delay on the shutdown, you can use the following command syntax instead:.
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Home Questions Tags Users Unanswered. Ask Question. Asked 6 years, 6 months ago. Active 10 months ago. Viewed k times.Joinsubscribers and get a daily digest of news, geek trivia, and our feature articles. Mac OS X contains a variety of tools for repairing disk, partition, and file system errors. These options work like chkdsk on Windowschecking for disk and file system errors and repairing them.
You can perform a check from within Mac OS X, but it may sometimes be necessary to use recovery mode to fix problems.
You can either run the First Aid function on an entire disk, or an individual partition on that disk. If it finds any errors, it will attempt to automatically fix them for you. Sign in with your password and your Mac will then check your disks. This will make the login process take longer than normal, so be patient. You can reboot your Mac at this point. Ideally, that should be the end of it — especially if you used the safe mode trick above.
However, in some cases, your Mac may find disk or file system problems and be unable to repair them when you perform the above steps. The solution is to boot into a special recovery mode. Your Mac will be able to fix errors on your system drive from recovery mode.
Your Mac will load straight into recovery mode. You may need to boot your Mac into single-user mode and run the fsck file system check command the old-fashioned way. To do this, start your Mac in single-user mode. Type the following command into the terminal and press Enter to start a file system check:. The command will run through several phases of checks.
This indicates the fsck command found and fixed problems. The fsck command may find additional errors after repairing the first batch of errors, so Apple recommends you run the fsck command again if it found and fixed problems. When the fsck command says your disk is okay, type the following command at the terminal and press Enter:.
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Windows Mac iPhone Android.Nonetheless, for advanced Mac users, using the terminal reboot command can be an invaluable trick for troubleshooting purposes, remote systems administration, remote management through SSHafter installing software updates on a Mac through the command prompt, and a great number of other reasons.
To start a reboot immediately from the Mac OS X Terminaltype the following command string at a prompt either locally or remotely :. You can add a message to the reboot notice for those logged in through SSH by adding a quote at the end like so:. The reporting will reference shutdown whether you are rebooting, shutting down, or sleeping, which is why it can be useful to append a message to the command, which is reported back as the second to last line.
Using this shutdown command, it would also be easy to modify a past trick to remotely sleeping a Mac to be able to remotely reboot or shutdown a Mac instead. As you may have guessed, the shutdown command can be used for other tasks like actually shutting the Mac down, putting the Mac to sleep instantly like pmsetand more.
Enjoy this tip? Subscribe to the OSXDaily newsletter to get more of our great Apple tips, tricks, and important news delivered to your inbox! Enter your email address below:. Is there a way to reboot in to specific run states like Single User and Recovery from the command line?
Think graceful shutdown versus just sending kill signals. Name required. Mail will not be published required.Zfs raid
All Rights Reserved. Reproduction without explicit permission is prohibited. March 30, at pm. August 12, at am. Bill Eccles says:. September 7, at pm. Phil says:. September 6, at pm. Tinman says:. June 30, at pm.Advanced macOS Tricks and Utilities Using Terminal!
Austria says:. September 6, at am.Cleaning airpods with compressed air
Rick Blythe says:. Will says:.Launch Terminal from your Dock, Utilities folder, or via an app launcher like Alfred. Once launched, type or paste in the following command.
Or, if you have an external drive attached, you can type or paste in the following:. Once booted from OS X recovery, select Terminal from the utilities and then at the unix prompt enter:. You will see a list of available updates.
Reboot Mac OS X from the Command Line
You can then install all available software updates with the following command:. The use of sudo is required to get superuser privileges to actually install the updates. You can also install only the recommended updates with:. Or you can just install specific software updates by specifying the shorthand package name from the previous list, like so:.
If there are any updates you want to ignore, you can do so with the -—ignore flag, for example:. This is really useful for remotely updating Macs, setting up automated updates via a bash script, or if you just want to geek out.
Time Machine is a great tool for ensuring that your data is safe, and it's pretty easy to set up and use. But for some users, the basic Time Machine interface isn't enough.
As with most of OS X's functions, there is a command-line tool that lets you do many things with Time Machine. Here's how you can use the tmutil command to control and tweak Time Machine from Apple's command-line tool, Terminal.
Most people won't need to use this command for their backups because the Time Machine interface will suffice. Who will need it? People who want to manage remote Macs or who want to run scripts containing commands for Time Machine. The basics of the tmutil command can be found by typing man tmutil in Terminal.
The man page tells you what you can do with this command. The sudo command is required for many of the commands you issue with tmutil because you need administrative privileges; you'll have to enter your password after running the above commands.
If you want to run a Time Machine backup right away, on a Mac that either has Time Machine disabled, or, say, just before updating to a new version of OS X, you can run this command:. This is the same as choosing Back Up Now from the Time Machine menu in the menu bar at the top of your screen. Since your laptop isn't always connected to its backup disk, Time Machine retains "local snapshots," or files that it will copy to your backup disk the next time it is available.
However, these local snapshots take up space, and you may want to turn this feature off if you don't have much room on your hard disk. You can do so with the following command:.
Running this command will also delete any local snapshots. You can turn local snapshots back on by running:.
If you love delving into the nitty-gritty, and especially if you manage remote Macs, you'll find this to be a very useful tool. You can exclude certain files and folders from your Time Machine backups from the Time Machine pane in System Preferences.
Naturally, you can also do this from the command line, too. Run this command:. The part stands for the path to a file or folder. For example, if I want to exclude my Downloads folder from Time Machine backups, I would run the following:. The tmutil addexclusion command has an interesting property: it's sticky.
When you use this command, the item you exclude remains in the Time Machine exclusion list even if you move it, which is not the case when you exclude items from the Time Machine preference pane. If you use the above command with the -p flag, then it will not be sticky, and will be the same as an exclusion you add from the Time Machine preference pane. If you're managing a remote Mac, such as a server, you may want to change Time Machine settings for that computer.
You can start by finding where Time Machine backups are stored.To start the conversation again, simply ask a new question. Is there a command, similar to the Linux kernel init X, where I can restart in to single-user mode or any other mode like recovery directly instead of the keyboard shortcuts? Posted on Aug 12, AM. Aug 28, PM in response to solomani In response to solomani. I guess you could use these but I have to caution you,I alwayswindup doing it the long way,or the wrong way.
So do not try this at home! In fact, it would be very rare to be in a situation where you had to use them. Aug 28, PM. Page content loaded. Aug 12, AM in response to solomani In response to solomani.
Aug 12, AM. Aug 12, AM in response to macjack In response to macjack. You are welcome. Most Linux commands will work with Mac Terminal. So if you are familiar with Linux, you've got a leg up. Aug 13, AM in response to macjack In response to macjack. Aug 13, AM.Concordancias biblicas tematicas
Aug 22, PM in response to solomani In response to solomani. Aug 22, PM. Aug 28, PM in response to macjack In response to macjack.
The reason I wanted to be able to do this is that I use a gaming keyboard and it doesn't register with OSX at the boot-selector. Need to grab the original Apple Keyboard whenever I want to start up recovery mode or any boot option. So looking for a safe way to reboot in to recovery mode from the OS directly.
Just thought command line maybe an option. Question: Q: Single-User reboot from Terminal? More Less. Communities Contact Support. Sign in Sign in Sign in corporate. Browse Search. Ask a question. User profile for user: solomani solomani. Helpful answers Drop Down menu.Austria Day 1: Travel and trying to stay awake in Vienna.Point cloud density matlab
Nov 30 My love for Apple and especially MacOS does not run deep. Actually, it is essentially nonexistent. However, my situation called for Recovery Mode from a virtual machine and using a non-Apple keyboard so no Command key.
Yes, yes, I know that MacOS offers the ability to set different key combinations, but then those would still have to be trapped by VMWare Fusion during boot.
Instead, I figured that there had to be a way to do it from the MacOS terminal. Click to enlarge. Now, in the main window, there are plenty of tasks that can be launched. Thereafter, it is fairly simple to disable System Integrity Protection via the following command:. Though the procedures of getting to the MacOS Recovery menu without using the Command key and disabling System Integrity Protection are not all that difficult, they were a pain to figure out.
Skip to comment form. This was driving me insane, and Googling for it was useless. What the hell is going on with Apple? Being able to get into recover or select an alternate boot volume used to not only work with Macs, but also be easy. Wait for the chime, press your keys. Then, they removed the chime, because they apparently hate us, and it started to get tricky to time it. Try, fail, repeat. Great fun.
Every update to macOS since Mavericks has made everything worse. The hardware is getting worse as well. But thank you! Apple is notorious for making simple tasks exponentially more difficult than they need to be.
Toggle navigation The Z-Issue.There are times when your Mac may misbehave and refuse to boot into OS X. You may get a sad Mac face, an audible beep, or another ailment keeping your Mac from properly booting. When this happens, you can troubleshoot your Mac by using boot options to run an Apple Hardware Test, or booting with extensions disabled. Sometimes, launching your Mac this way can help save you a trip to the Apple Store.
Instead, turn to this guide in which we explain all of the various boot options in OS X that may help return your Mac to normal. Booting from a CD?
Hold the keys down until the computer restarts and you hear the startup sound for the second time. Release the keys after you hear the second startup chime.Tenor guitar blues
The PRAM will be reset. Holding down the Option key during startup will show you a boot screen with all bootable devices listed. You can use the mouse or the keyboard to select a device to boot into. Sometimes discs can get stuck in your optical drive. When you cannot seem to get them out, you may panic, but just try restarting while holding down either the Eject key, F12 key, or your mouse or trackpad button.
Your disc will be ejected in a flash after doing this. If your setup includes a compatible network server NetBootyou can hold down the N key during startup to attempt a network boot. Target Disk Mode is a great way to retrieve your files from your Mac if your machine refuses to boot properly. Follow our guide on Target Disk Mode for more information on how it works.
OS X includes a boot option called Safe Mode. Start up your machine while holding down the Shift key to have OS X only load required kernel extensions and login items. It will disable all non system fonts, all startup items, and login items. If you are having OS X boot problems, always try this first to check and see if you have a rogue piece of software preventing your Mac from booting properly.
Check out this article for more information about booting into Safe Mode. Using this key combination will cause your Mac to become very verbose on startup and will show a terminal-like interface while booting. It will contain information important to startup, allowing you to diagnose startup problems by seeing any errors that may be occurring during startup.
Verbose mode exits automatically when the computer's startup process progresses sufficiently and the blue screen appears. This is a terminal interface that allows you to login and interact with your computer via text input only. No graphical interface will be loaded. This mode is good for when you need to troubleshoot a startup issue, or modify a file or application that is preventing proper startup.
In this mode, you can use Safari to browse the web for any possible boot problem solutions, perform a system restore, or format the drive using Disk Utility. For more information about using Lion's Recovery Mode features, check out this previous article. Cory Bohon is a freelance technology writer, indie Mac and iOS developer, and amateur photographer.
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How to reinstall macOS, even without Recovery Mode
Press Option During Startup Holding down the Option key during startup will show you a boot screen with all bootable devices listed. Press N During Startup If your setup includes a compatible network server NetBootyou can hold down the N key during startup to attempt a network boot. Stay safe online by getting the best Mac VPN. See more how-to articles.
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