macOS #

Check if network port is open on macOS #

nc -zv host 1433

how to remove extended attribute files starting with “._” on macOS #

xattr -d com.apple.quarantine filename
OR xattr -dr com.apple.quarantine directoryName

Tar without extended attribute files (starting with “._”) on macOS #

COPYFILE_DISABLE=1 tar -cf filename.overflow *

Clear DNS cache on macOS #

sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder

Show hidden files in finder on macOS #

Command + Shift + .

Build-in antivirus/malware protection on macOS #

Protecting against malware in macOS

View xProtect logs on macOS #

sudo log show --predicate 'subsystem == "com.apple.xprotect"'