Timed command-line screenshots
A TUAW staffer recently asked if there were a way to snapshot the exact same region of the screen over and over at timed intervals without buying third-party software.
There is, but it depends on your comfort with the command line. If you’re experienced in Unix scripting, read on. If not, you may want to investigate standalone screen-capture apps instead.
I pointed him to /usr/sbin/screencapture. This built-in OS X utility allows you to specify a screen region to capture. For example, to capture a 50×200 rectangle starting at the point 200, 200, you’d say:
% /usr/sbin/screencapture -R”200,200,50,200″ ~/Desktop/foo.png
You can easily apply a Unix shell script to create numbered output files. Unix commands will also enable you to sleep and repeat the capture requests over time.
The utility is Retina-ready. Since it captures in points (and not pixels), the results are twice as big in each dimension when run on Retina systems.
- Download iOS 7.1.1
- How To Jailbreak iOS 7 – 7.1 Untethered On iPhone 5s, 5c, 5, 4s And More With Evasi0n7
- How To Downgrade iOS 7.1-7.1.1 To iOS 6.1.3 / 6.1.2
- How To Downgrade iOS 7 To iOS 6.1.3 / 6.1.4
- How To Jailbreak iOS 6.1.3 On iPhone 4, iPod touch 4 and iPhone 3GS Using Redsn0w
- How To Jailbreak iOS 6.0 to 6.1.2 Untethered On iPhone 4,3GS, iPod touch 4 Using Sn0wbreeze 2.9.11
- How To Jailbreak iOS 6.1.2 Untethered On iPhone 5,4S, iPad, iPod touch Using Evasi0n 1.5
- How To Jailbreak iOS 6 With Official Cydia On iPhone 4, iPhone 3GS And iPod touch 4G Using Redsn0w 0.9.15b1