As for iOS, Apple has a tight grip on its desktop / laptop operating system Screenshot Mac. With a MacOS-based PC, however, you get some additional Screenshot Mac options than those obtained with Windows (because Mac keyboards do not have a PrtScn key).
Here are the simple steps: To capture the entire screen, press Command-Shift-3 (all three buttons at once). A PNG image file of the screen appears on your desktop. If you want only a part of the screen, press Command-Shift-4; it rotates the cursor in a reticle. Select the area of the screen you want to capture. Or, press the spacebar and the cursor turns to a camera-click any open window to highlight it. Click again and only the window itself is captured.
If you like the Windows method, where you capture it, you are immediately stored in the clipboard, you try Command + Control + Shift + 3 for the entire screen or Command + Control + Shift + 4 for a section. Adding the keystroke to the keystroke does not save the image to your desktop and then use Control + V to paste it into any application.
If you have a Mac screen with Retina, a Screenshot Mac of the entire screen in PNG format can be as large as 7MB. If you want to save Mac in JPG or any other format, change the settings. You must open a terminal window on the Mac and type the following:
by default write com.apple.screencapture type jpg
When prompted for your password, enter it. Reboot your system and future screenshots should be in JPG format. Change it by typing the same but replacing "jpg" with "png".
Do you prefer an application that supports Screenshot Mac? Apple always understands tomb in its application> utilities folder (search with spotlight to find it quickly). The effectiveness of Grab is limited because it captures only images in TIFF format, but it can take a look at the entire screen, a selected window or section, and it has a timer so you can capture items such as dropdown menus. The shortcuts to do this are the same as the ones you will use for the operating system itself, so really, do not get bored with grave if you only work with a mouse.
Remember, Macs can also use free third-party utilities for screenshots, including snappy (the sync screenshots with SnappyApp for iOS), jing, snagit, skitch, light shot and others. If you think it's worth paying, the vapable and award-winning SnapzProX is an option that costs $ 69.
There are almost as many ways to capture a screenshot in Linux, because there are flavors of Linux. Let's look at Ubuntu.
You can go directly to Applications> Accessories> Run Screen Capture to start.
PrtScn works - press the key on the keyboard and it will rotate the entire screen. Press Alt-PrtScn to enter only the active window.
The real Linux heads appreciate the ability to capture a screenshot from this window, which is not the screenshot: the terminal.
Perhaps the best thing to do is take a screenshot from a program where you can edit the screenshot after, and there is no better candidate than the GNU Image Manipulation Program or GIMP. Select File> Acquire> Screenshot. You get a few options, such as the full screen, a window, or a timeout. The captured image is then opened in GIMP for editing.