@@ -35,7 +35,7 @@ fi

 rootlesskit=""

 for f in docker-rootlesskit rootlesskit; do

-	if which $f > /dev/null 2>&1; then

+	if command -v $f > /dev/null 2>&1; then

 		rootlesskit=$f

 		break

 	fi

@@ -53,7 +53,7 @@ fi

 net=$DOCKERD_ROOTLESS_ROOTLESSKIT_NET

 mtu=$DOCKERD_ROOTLESS_ROOTLESSKIT_MTU

 if [ -z $net ]; then

-	if which slirp4netns > /dev/null 2>&1; then

+	if command -v slirp4netns > /dev/null 2>&1; then

 		# If --netns-type is present in --help, slirp4netns is >= v0.4.0.

 		if slirp4netns --help | grep -qw -- --netns-type; then

 			net=slirp4netns

@@ -65,7 +65,7 @@ if [ -z $net ]; then

 		fi

 	fi

 	if [ -z $net ]; then

-		if which vpnkit > /dev/null 2>&1; then

+		if command -v vpnkit > /dev/null 2>&1; then

 			net=vpnkit

 		else

 			echo "Either slirp4netns (>= v0.4.0) or vpnkit needs to be installed"