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MacBook and OS X Info

Selected OS X keyboard shortcuts

Common OS X shortcuts (Resolve shorts)

⌘-F, ⌘-GFind, find again
⇧⌘-5screenshot or screen recording
⇧⌘-6screen capture Touch Bar
Power buttonPress to sleep/wake; Long press to turn off Mac

Finder and System Shortcuts

⇧⌘-COpen Computer window
⇧⌘-FOpen Recents window
⇧⌘-HOpen my Home folder
⇧⌘-IOpen iCloud drive
⇧⌘-OOpen Docunents folder
⌥⌘-DShow/hide Dock
⌘-NOpen new Finder window
⌘-↑Open folder containing current folder
⌘-↓Open the selected item
⌘-deleteMove selected item to Trash
⌘-spaceInvoke Spotlight
⌘-tabOpen application switcher; keep ⌘ pressed use Tab to get to app you want to use
fn-fnLaunch Dictation, start speaking. Press fn when done.
⌘-`Move between open windows in currently active app.

Document Shortcuts

⌥-DeleteDelete word to left of insertion point
fn-↑Page up; scroll up one page
fn-↓Page down; scroll down one page
fn-←Home: scroll to beginning of document
fn-→End: scroll to end of document
⌘-↑Move insertion point beginning of doc
⌘-↓Move insertion point to end of document
⇧⌘-↑Select text between insertion point and beginning of the document
⇧⌘-↓Select text between insertion point and end of document
∧TSwap the character behind insertion point with character after it

Startup Key Combinations

⌥⌘-P-RReset NVRAM or PRAM
Start up in Safe mode
⌘-VStart up in Verbose mode, you can enter UNIX commands, to exit UNIX mode type command reboot


Command (or Cmd)
Option (or Alt)
Control (or Ctrl)
Caps Lock

OS X Annoyances

Change default application

Suppose you want all .xlsx files to open with LibreOffice instead of Numbers. Do the following.

  1. Find a file with the extension (.xlsx), right click, and Get Info.
  2. Under Open with, open the dropdown, find the application you want to open this type of file (LibreOffice), and select it.
  3. Click the Change All… button.
  4. Confirm that you want to make the change.

From this point on, all files with the same extension will open with this application.

Reset Printing System

If something goes wrong with printing, for example you can't add a printer that you used to be able to use (e.g., Samsung 2830), reset the printing system. If you reset the printing system, you will

  • lose all print queues and pending print jobs
  • remove all printer preference files
  • removes all printers currently in the Printers & Scanners preference pane.

To Reset Printing System:

  1. Launch System Preferences
  2. Select Printers & Scanners
  3. In the Printers and Scanners preference pane, place your cursor in an empty area of the printer list sidebar (where the printers are listed) and right-click; select Reset Printing System from the popup.
  4. You're asked to confirm. Press Reset.
  5. You may need to enter administrator password or finger.

The printing system will be reset and you will need to add back your printer.

Determine IP address of Samsung M2830DW printer

  1. Turn device on
  2. Press and hold the Cancel (X) button till green light blinks 5 times, then release
  3. Output is printed. On second page you'll find the IP address.
macbook.1556149248.txt.gz · Last modified: 2019.04.24 19:40 by smi