macOS System Commands in bash Syntax for troubleshooting or configuring a macOS System.

bash-macOS.sh

# Stop (and Resart) the macOS User Interface Runtime (Menubar, Dock, etc.)
killall SystemUIServer

# Stop (and Resart) Finder (the macOS File Explorer)
killall Finder

# Set Screenshot/Screencapture Format
#    Options: "png", "bmp", "gif", "jpg", "pdf", "tiff"
#    Apply changes with: `killall SystemUIServer`
defaults write com.apple.screencapture type -string "png"

# Change the Screenshot/Screencapture Directory
#    Options: valid path (can include valid Environment Variables)
#    Apply changes with: `killall SystemUIServer`
defaults write com.apple.screencapture location -string "$HOME/Pictures"


# CHANGE SCREENSHOT (CMD+SHFT+3) SAVE LOCATION (~ IS YOUR CURRENT USER FOLDER)
defaults write com.apple.screencapture location ~/Downloads/_NewScreenShots/;
killall SystemUIServer;


# SHOW HIDDEN FILES
defaults write com.apple.finder AppleShowAllFiles YES;
killall Finder;


# HIDE HIDDEN FILES
defaults write com.apple.finder AppleShowAllFiles NO;
killall Finder;


# TURN ON TEXT SELECTION IN QUICKLOOK (PRESS SPACE ON FILES IN FINDER)
defaults write com.apple.finder QLEnableTextSelection -bool TRUE;
killall Finder;


# TURN OFF TEXT SELECTION IN QUICKLOOK
defaults delete com.apple.finder QLEnableTextSelection;
killall Finder;


# CHANGE SYSTEM (COMPUTER) NAME
sudo -E scutil --set HostName NEW_COMPUTER_NAME;
# (restart terminal afterwards)


# RESTART FINDER (WIHOUT RESTARTING YOUR SYSTEM) IF IT IS FROZEN OR YOU CANNOT DELETE A STUBBORN FILE FROM THE TRASH
killall Finder;


# RESTART THE MENU BAR (WIHOUT RESTARTING YOUR SYSTEM) IF IT IS FROZEN OR DOING SOMETHING WEIRD
killall SystemUIServer;


# RESTART THE DOCK (WIHOUT RESTARTING YOUR SYSTEM) IF IT IS FROZEN OR DOING SOMETHING WEIRD
killall Dock;

# Enable or Disable the automated Drop-Shadow in Window Screenshots/Screencaptures
#    Options: true, false
#    Apply changes with: `killall SystemUIServer`
defaults write com.apple.screencapture disable-shadow -bool true