Programmatically (from the command line) convert a folder of .po files to .mo files.

po2mo.sh

#!/sh/bin

###
 # PO 2 MO files conversion.
 #
 # @since Monday, March 19, 2018
 ##
function po2mo {

	if ! [ -x "$(command -v msgfmt)" ]; then
		echo "Please run: brew install gettext" && return
	fi

	if ! [ -x "$(command -v dos2unix)" ]; then
		echo "Please run: brew install dos2unix" && return
	fi

	help="Usage: cd into folder; then run po2mo";
	if [ '--help' == "$1" ]; then
		echo "$help" && return
	fi

	# Clean BOM from .po files: https://unix.stackexchange.com/questions/381230/how-can-i-remove-the-bom-from-a-utf-8-file.
	for f in *.po; do
		dos2unix "$f" &>/dev/null
	done

	# Convert .po to .mo...
	find . -name \*.po -execdir sh -c 'msgfmt "$0" -o `basename $0 .po`.mo' '{}' \;

	echo "Done!"
}