Skip to content
Search

Mac

lastmod 2026-01-05created 2014-03-3163 edits

Mac OS is a graphical user interface operating system developed by Apple for the Macintosh. At first this operating system was an unnamed operating system included with the Macintosh, simply called the System Software, but its name changed to Mac OS with the release of Mac OS 7.6 in 1997.

Older versions of Mac OS were compatible only with Motorola 68000-based Macintoshes. Later, as Apple released PowerPC-based Macintoshes, Mac OS was also ported to PowerPC. Mac OS 8.1 was the last version compatible with Motorola 68000-based Macintoshes (Motorola 68040), and Mac OS X, which supported only PowerPC, was ported to Intel processors from version 10.4.4 with the release of the Intel Macs. Starting with 10.6 Snow Leopard, support for PowerPC processors was dropped.

Broadly, it can be divided into the traditional Classic series (System 1.0 – Mac OS 9) and the newer releases from Mac OS X onward.

Category

Package manager

Packaging

  • Zapp - A powerful CLI tool designed to simplify the distribution process of macOS applications. With Zapp you can easily create DMG and PKG files and perform code signing, app notarization, and plist file modification.

MAC OS X

OS X (pronounced "O-S ten", formerly Mac OS X) is an operating system made by the company Apple. It has shipped on all Macintosh computers since April 2002. This operating system succeeds Mac OS 9, the last classic version of the Mac OS that had led Apple Computer since January 1984. The letter "X" in the name OS X does not mean the letter "X" of the alphabet; it means the Roman numeral "10", because it is the 10th operating system of the Macintosh. This operating system was built with the technology of NeXT, which Apple acquired in December 1996, and is based on Unix. OS X Lion was released on July 20, 2011. Although it had often been abbreviated as OS X before, with the announcement of OS X Mountain Lion the word Mac was officially removed from the former name Mac OS X.

MAC OS X UNINSTALL

Hold down the Command (⌘) and R keys while the computer restarts. Then erase the HDD in Disk Utility and reinstall.

Access windows public directory

How to access a Windows shared folder from a Mac:

  1. Create a shared directory on Windows.
  2. Set the sharing permissions and user accounts.
  3. Create an account so that the Macintosh user can log in.
  4. In Finder, choose "Connect to Server...", then enter the address as shown below. (Spaces must be entered as %20 to be recognized.) 
smb://IP주소/공유 폴더/

How to use SMB Printer

You can add it using the printer's advanced options. The advanced options can be found as follows. 

시스템 환경설정 > 프린터 및 스캐너 > + > 상단 제목표시줄에서 마우스 오른쪽 클릭 > 도구 막대 사용자화 ... > 고급 아이콘 드래그
  • Type: "Windows printer via spoolss"
  • Device: "Another Device"
  • URL: smb://[insertprint server URL here]/[insert queue name here] 1 2
  • Name: Enter the queue name you wrote in the URL as-is. (suggestion: include the queue name so that Technology Services at FAA can help troubleshoot later, if necessary)
  • Location: enter the location for your reference. 3
  • Use: Generally select "Select Printer Software...", locate the appropriate driver for the printer, and click "OK". 4

Example

Osx-printer-example-screenshot.png

Uninstall Application

Check the data in the following paths.

  • ~/Library/Caches/[Organization identifier]
  • ~/Library/Saved Application State/[Organization identifier]
  • ~/Library/Preferences/[Organization identifier]
  • ~/Library/Application Support/[Organization identifier]
  • ETC...

Keyboard shortcut

Frequently used keyboard shortcuts are as follows.

command + control + Space
Opens the special characters and emoji input window. (Available in OS X 10.9 Mavericks)
control + Down, [Number]
Selects another window opened by the same application.
control + F3
Moves focus to the Dock.
command + alt + L (no default)
'Show Launchpad' has no shortcut. So you must assign a shortcut at the path below. 
시스템 환경설정 -> 키보드 -> 단축키 -> Launchpad 및 Dock
control + command + space
Emoji & Symbols. (Does not work in some applications.)
command + `
Switches between windows when several of the same kind of program are open.

Screenshot

command + shift + 1 ~ 4
Takes a screenshot. 4 lets you select a region with the mouse. The screenshot is saved to the desktop.
command + shift + control + 1 ~ 4
Takes a screenshot. 4 lets you select a region with the mouse. The screenshot is copied to the clipboard.
command + shift + 3
Takes a full-screen screenshot and saves it to the Desktop folder.
command + shift + 4
Takes a screenshot of a selected region and saves it to the Desktop folder.
command + shift + 4 -> space
Takes a screenshot of a selected window and saves it to the Desktop folder.
command + shift + 5
Takes screenshots in various ways and saves them to the Desktop folder.

To save to the clipboard instead, hold down control while taking the screenshot.

IME

command + space
Switch language
command + left/right
Start (left) and end (right) of the line being edited
command + up/down
Start (up) and end (down) of the editor being edited
alt + left/right
Move the cursor word by word

If you don’t have permission to use a disk

If acquiring permissions on an external disk does not apply properly (chown, etc.), it can be solved as follows.

  1. Select the disk and choose File > Get Info.
  2. Click the disclosure triangle next to Sharing & Permissions to expand that section.
  3. Select the “Ignore ownership on this volume” checkbox.

Install Ubuntu

How to install Ubuntu on MacOS:

  1. Download the Ubuntu image.
  2. Format the USB drive.
    • Launch Disk Utility from Applications>Utilities or Spotlight search
    • Insert your USB stick and observe the new device added to Disk Utility
    • Select the USB stick device (you may need to enable the option View>Show All Devices) and select Erase from the tool bar (or right-click menu)
    • Set the format to MS-DOS (FAT) and the scheme to GUID Partition Map
    • Check you’ve chosen the correct device and click Erase
  1. Download, install, and run the Etcher program.
  2. Install it onto the USB drive, then reboot.
    • If you want to use your USB stick with an Apple Mac, you will need to restart or power-on the Mac with the USB stick inserted while the Option/alt (⌥) key is pressed.
    • This will launch Apple’s ‘Startup Manager’ which shows bootable devices connected to the machine. Your USB stick should appear as gold/yellow and labelled ‘EFI Boot’. Selecting this will lead you to the standard Ubuntu boot menu.

How to Fix a Slow MacOSX

kernel_task (needs verification)

A rise in kernel_task usage is not an error; it is an OS design that intentionally raises the kernel task's usage to keep other processes from running in situations such as overheating. Since heat is usually the cause, it is recommended to solve it by reducing heat sources or creating an environment with good cooling. 

시스템 > 라이브러리 > Extensions > IOPlatformPluginFamily.kext

Right-click it and choose Show Package Contents; a Contents file appears. Click it, then 

PlugIns > ACPI_SMC_PlatformPlugin.kext > 패키지 내용 보기

Back up Resources, then find and delete the file matching the model identifier5 shown in System Information. 6

e.g) If it says MacBookPro8,3, then MacBookPro8_3 

그 후 시스템 종료 > 리버커리 모드 부팅 > 터미널

Enter csrutil enable, then reboot.

kernel_task - NVRAM reset (needs verification)

NVRAM stands for "non-volatile random-access memory", i.e. non-volatile RAM. Settings for OS X are stored there so they can be accessed quickly!

  • Speaker volume
  • Screen resolution
  • Startup disk selection
  • Recent kernel panic information, if any

Apparently the official website recommends resetting NVRAM if any of the above applies. (needs verification)

How to reset:

  1. Shut down the Mac.
  2. Hold down the CMD + OPTION + P + R keys.
  3. While holding them, press the power button.
  4. Keep holding the CMD + OPTION + P + R keys and you will hear the first startup chime. Do not let go!
  5. Keep holding the keys until you hear the startup sound a second time.
  6. Release the keys as soon as you hear the second startup sound.

mds_store (needs verification)

It is related to Spotlight activity; just disable it. 

$ sudo mdutil -a -i off

To enable it again: 

$ sudo mdutil -a -i on

Utilities

  • ShiftIt
  • iTerm2
  • Securable: Utility to check whether the CPU supports virtualization.
  • Itsycal: Calendar utility
  • Alfred
  • MenuMeters: PC status monitoring in the menu bar
  • GoldenRabbit: Makes the MacBook Pro Touch Bar useful
  • BitBar - Lets you put the output of any script or program in the Mac OS X menu bar.
  • Maccy - Open-source clipboard manager app for Mac
  • jamoya-one - Jamoya Moyeora ("Gather, jamo!") - A tool to fix Hangul jamo separation in file names
  • KeyboardCowboy - Keyboard shortcut tool for Mac
  • mac-cleanup-go - TUI-based Mac cache cleanup tool

Objective-See - Free/open-source security tools for macOS

  • LuLu : Firewall for blocking malware
  • Do Not Disturb : Physical attack alerts (if someone opens the laptop, it takes a photo with the camera, logs whether something is plugged into USB/Thunderbolt, etc., and notifies your phone)
  • KnockKnock : Checks for software installed and running without your knowledge
  • TaskExplorer : Checks running processes
  • ReiKey : Keylogger detection
  • Netiquette : Network monitor
  • BlockBlock : Monitors components that automatically relaunch and sends alerts
  • RansomWhere : Detects ransomware by continuously monitoring the file system for newly encrypted files
  • OverSight : Monitors the Mac's microphone and webcam and alerts you when a process turns on the mic/webcam
  • KextViewr : Shows all loaded Kexts (with details such as signing status and full path)
  • Dylib Hijack Scanner : Scans the computer to find applications vulnerable to, or already hit by, dylib hijacking
  • What's Your Sign : Adds a ^-Click menu to Finder that shows code signing information for any file
  • Commandline Utilities : Command-line tools for system monitoring and malware analysis

See also

Favorite site

Utility

Article

References

  1. Here the queue name becomes the printer name (the printer name shown over SMB. If unsure, enter the printer name exactly as it appears when you connect to the shared drive from Windows. ↩

  2. (Spaces must be entered as %20 to be recognized.) ↩

  3. If unsure, leave it blank. ↩

  4. If unsure, select "Generic PCL Printer". ↩

  5. The model identifier can be found under 좌상단 애플 아이콘 > 이 맥에 관하여 > 개요 > 시스템 리포트 > 하드웨어. ↩

  6. Path: /System/Library/Extensions/IOPlatformPluginFamily.kext/Contents/Plugins/ACPI_SMC_PlatformPlugin.kext/Contents/Resources/ ↩

  7. OSX_recommended_program_in_2017.pdf ↩

author Zer0 sitemap