tricks-macos.txt

Clear Terminal History
	1.	For current session history:
		history -c
	2.	For all history:
		rm ~/.bash_historys


Create Install ISO (10.9 Mavericks onwards):
	After downloading installation, execute:
		# Create blank disk image
		hdiutil create -o /tmp/HighSierra.cdr -size 5200m -layout SPUD -fs HFS+J
		* Size:
			El Capitan: 5985m
			High Sierra: 5175m
		# Mount blank image
		hdiutil attach /tmp/HighSierra.cdr.dmg -noverify -mountpoint /Volumes/install_build
		# Create install media
		sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/install_build --applicationpath /Applications/Install\ macOS\ High\ Sierra.app
		# Move disk image to desktop
		mv /tmp/HighSierra.cdr.dmg ~/Desktop/InstallSystem.dmg
		# Unmount the image:
		hdiutil detach /Volumes/Install\ macOS\ High\ Sierra
		# Convert image to ISO:
		hdiutil convert ~/Desktop/HighSierra.cdr.dmg -format UDTO -o ~/Desktop/HighSierra.iso
		# Remove DMG image:
		rm ~/Desktop/InstallSystem.dmg
		# Correct extension of ISO image:
		mv ~/Desktop/HighSierra.iso.cdr ~/Desktop/HighSierra.iso


Create Install USB:
	After downloading installation, execute (with appropriate value for
	<volume> as the target volume to create in):
		sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/<volume> --applicationpath /Applications/Install\ macOS\ High\ Sierra.app


Disable Journaling:
	diskutil disableJournal /Volumes/TheVolumeName


Disable Verbose Boot
	sudo nvram boot-args=


Disabling System Integrity Protection and Removing System Applications
	1.	For actual Macs:
		a.	Start/restart your Mac.
		b.	Immediately hold down Command+R to boot into recovery.
	2.	For Virtual Machines:
		a.	Enter Virtual Machine EFI BIOS by pressing F12 while booting.
		b.	Select Boot Maintenance Manager > Boot From File > <Third item>.
		c.	This will present you with a very simple file manager like interface.
		d.	Open 'com.apple.recovery.boot'. Select 'boot.efi'.
	3.	Launch 'Utilities > Terminal' and execute the commmand:
		csrutil disable
	4.	Restart system.
	5.	sudo rm -fr /Applications/<Application>


Download El Capitan:
	https://itunes.apple.com/app/os-x-el-capitan/id1147835434?mt=12


JRE home:
	/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/
	* Place JCE files in the sub folder of above:
		lib/security/


Location of user preferences:
	Canonical location:
		~/Library/Preferences


Location of system applications:
	/System/Library/CoreServices/Applications


Open JAR files from unknown publisher(s):
	Right click on the JAR file and select 'Open'/'Open with'.
		or
	Hold 'Control' and click on file.


Resize Partition
	diskutil resizeVolume /path/to/volume <size>
	* Note: Does not seem to work for unjournaled HFS+


Secure Erase
	sudo diskutil secureErase freespace 0 "/Volumes/<Volume>"


Set Dock Height in Pixels
	defaults write com.apple.Dock tilesize -int X && killall -HUP Dock
	* where X = desiredDockHeight / 2 - 11 (try 21)


Show Hidden Files in Finder
	defaults write com.apple.finder AppleShowAllFiles YES


System Unresponsive/Hung
	1.	For 03 seconds press & hold 'Command + Shift + Options + Esc'.
	2.	If the screen was not locked, then that action will Force Quit the
	front-most application (the Force Quit Applications window is not required).
	3.	If, after releasing keys force quite fails, proceed with second round,
	third round and so on...