Disables icon previews and preview column for all users in macOS High Sierra.

Disable Icon Preview High Sierra.sh

#!/bin/bash

# This disables the Column View icon in Finder for all users

# Change file separators so we don't get hung up on spaces
OIFS=$IFS
IFS=$'\n'

# Iterate through all users
for user in $(dscl . list /Users UniqueID | awk '$2 >= 500 {print $1}'); do
    userHome=$(dscl . read /Users/"$user" NFSHomeDirectory | sed 's/NFSHomeDirectory://' | grep "/" | sed 's/^[ \t]*//')

    # Delete the existing column preview setting
    /usr/libexec/PlistBuddy -c "Delete StandardViewOptions:ColumnViewOptions:ShowIconThumbnails" "$userHome/Library/Preferences/com.apple.finder.plist"
    /usr/libexec/PlistBuddy -c "Delete StandardViewOptions:ColumnViewOptions:ColumnShowIcons" "$userHome/Library/Preferences/com.apple.finder.plist"

    # Reset the column preview setting to off
    /usr/libexec/PlistBuddy -c "Add StandardViewOptions:ColumnViewOptions:ShowIconThumbnails bool false" "$userHome/Library/Preferences/com.apple.finder.plist"
    /usr/libexec/PlistBuddy -c "Add StandardViewOptions:ColumnViewOptions:ColumnShowIcons bool false" "$userHome/Library/Preferences/com.apple.finder.plist"
    chown "$user" "$userHome/Library/Preferences/com.apple.finder.plist"
done

# Delete prefs/plist cache
killall cfprefsd

# Restart the Finder
killall Finder

# Reset file separators just in case...
IFS=$OIFS

This is the original that I forked from @MacChuck. Needs way better user iteration and reading of home directories.

Should be good now. Haven't test, but just did some simple copy-pasta with other scripts. All passed on shellcheck.