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Top Forums UNIX for Dummies Questions & Answers From iOS programming to Linux system programming Post 302796843 by Rockatansky on Sunday 21st of April 2013 01:49:21 AM
Old 04-21-2013
From iOS programming to Linux system programming

Hello.
I like Linux and C programming language. Allways wanted to understand kernel and become a Linux system programmer. And I also like Objective-C and iOS. These two programming areas have relations:
1. Linux and iOS are UNIX-like systems, POSIX compliant.
2. It is useful to know C language for iOS programmer.

And I have these questions:
1) Is it useful for usual iOS web/GUI/game programmer to know UNIX/FreeBSD programming?
2) Is it useful for usual iOS web/GUI/game programmer to know iOS kernel and iOS system programming?
3) Is it difficult to transit from iOS programming to Linux system programming?
 

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idevicediagnostics(1)					      General Commands Manual					     idevicediagnostics(1)

NAME
idevicediagnostics - Interact with the diagnostics interface of a device. SYNOPSIS
idevicediagnostics [OPTIONS] COMMAND DESCRIPTION
Interact with the diagnostics interface of a device which allows to retrive all kinds of information including diagnostics data, mobi- legestalt data, remote access to the IORegistry and certain commands like restart, shutdown and sleep. Only available for iOS 4 and later. Accessing IORegistry is only supported on iOS 5 and later. OPTIONS
-u, --udid UDID target specific device by its 40-digit device UDID. -d, --debug enable communication debugging. -h, --help prints usage information. COMMANDS
diagnostics [TYPE] print diagnostics information from device optionally by TYPE. This includes "All", "WiFi", "GasGauge" or "NAND". Default is "All". mobilegestalt KEY [...] print values of mobilegestalt keys passed as arguments after the command and seperated by a space. ioreg [PLANE] print IORegistry of device, optionally by PLANE like "IODeviceTree", "IOPower" or "IOService". Only available on iOS 5 and later. shutdown shutdown device restart restart device sleep put device into sleep mode which also disconnects it from the host. AUTHORS
Martin Szulecki idevicediagnostics(1)
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