use 'command -v' instead of 'which' in bash scripts

hack/release/create.sh

@@ -31,7 +31,7 @@ cd "${REPO_ROOT}"
 
 # darwin is great
 SED="sed"
-if which gsed &>/dev/null; then
+if command -v gsed &>/dev/null; then
   SED="gsed"
 fi
 if ! (${SED} --version 2>&1 | grep -q GNU); then

hack/util/goarch.sh

@@ -16,13 +16,13 @@
 # this script attempts to print GOARCH for the host
 
 # if we have go, just ask go!
-if which go >/dev/null 2>&1; then
+if command -v go >/dev/null 2>&1; then
     go env GOARCH
     exit $?
 fi
 
 # fall back to uname
-if which uname >/dev/null 2>&1; then
+if command -v uname >/dev/null 2>&1; then
   case "$(uname -m)" in
     x86_64)
       echo "amd64"

hack/util/goinstalldir.sh

@@ -16,7 +16,7 @@
 # this utility prints out the golang install dir even if go is not installed
 
 # if we have go, just ask go!
-if which go >/dev/null 2>&1; then
+if command -v go >/dev/null 2>&1; then
   DIR=$(go env GOBIN)
   if [ -n "${DIR}" ]; then
     echo "${DIR}"

hack/util/goos.sh

@@ -16,7 +16,7 @@
 # this script attempts to print GOOS for the host
 
 # if we have go, just ask go!
-if which go >/dev/null 2>&1; then
+if command -v go >/dev/null 2>&1; then
     go env GOOS
     exit $?
 fi
@@ -36,7 +36,7 @@ if [ -n "${OSTYPE:-}" ]; then
 fi
 
 # fall back to uname
-if which uname >/dev/null 2>&1; then
+if command -v uname >/dev/null 2>&1; then
   case "$(uname -s)" in
     Darwin)
       echo "darwin"

images/kindnetd/push-cross.sh

@@ -36,7 +36,7 @@ ARCHES=(
 
 # darwin is great
 SED="sed"
-if which gsed &>/dev/null; then
+if command -v gsed &>/dev/null; then
   SED="gsed"
 fi
 if ! (${SED} --version 2>&1 | grep -q GNU); then