diff --git a/src/net/http/cgi/host_test.go b/src/net/http/cgi/host_test.go
index 860e9b3e8f..707af71dd7 100644
--- a/src/net/http/cgi/host_test.go
+++ b/src/net/http/cgi/host_test.go
@@ -9,6 +9,7 @@ package cgi
 import (
 	"bufio"
 	"fmt"
+	"internal/testenv"
 	"io"
 	"net"
 	"net/http"
@@ -93,7 +94,7 @@ var cgiTested, cgiWorks bool
 func check(t *testing.T) {
 	if !cgiTested {
 		cgiTested = true
-		cgiWorks = exec.Command("./testdata/test.cgi").Run() == nil
+		cgiWorks = testenv.Command(t, "./testdata/test.cgi").Run() == nil
 	}
 	if !cgiWorks {
 		// No Perl on Windows, needed by test.cgi
@@ -462,7 +463,7 @@ func findPerl(t *testing.T) string {
 	}
 	perl, _ = filepath.Abs(perl)
 
-	cmd := exec.Command(perl, "-e", "print 123")
+	cmd := testenv.Command(t, perl, "-e", "print 123")
 	cmd.Env = []string{"PATH=/garbage"}
 	out, err := cmd.Output()
 	if err != nil || string(out) != "123" {
diff --git a/src/net/http/fs_test.go b/src/net/http/fs_test.go
index bb96d2ca68..2e15773652 100644
--- a/src/net/http/fs_test.go
+++ b/src/net/http/fs_test.go
@@ -9,6 +9,7 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	"internal/testenv"
 	"io"
 	"io/fs"
 	"mime"
@@ -1266,7 +1267,7 @@ func TestLinuxSendfile(t *testing.T) {
 	defer ln.Close()
 
 	// Attempt to run strace, and skip on failure - this test requires SYS_PTRACE.
-	if err := exec.Command("strace", "-f", "-q", os.Args[0], "-test.run=^$").Run(); err != nil {
+	if err := testenv.Command(t, "strace", "-f", "-q", os.Args[0], "-test.run=^$").Run(); err != nil {
 		t.Skipf("skipping; failed to run strace: %v", err)
 	}
 
@@ -1279,7 +1280,7 @@ func TestLinuxSendfile(t *testing.T) {
 	defer os.Remove(filepath)
 
 	var buf strings.Builder
-	child := exec.Command("strace", "-f", "-q", os.Args[0], "-test.run=TestLinuxSendfileChild")
+	child := testenv.Command(t, "strace", "-f", "-q", os.Args[0], "-test.run=TestLinuxSendfileChild")
 	child.ExtraFiles = append(child.ExtraFiles, lnf)
 	child.Env = append([]string{"GO_WANT_HELPER_PROCESS=1"}, os.Environ()...)
 	child.Stdout = &buf
diff --git a/src/net/http/http_test.go b/src/net/http/http_test.go
index 91bb1b2620..2e7e024e20 100644
--- a/src/net/http/http_test.go
+++ b/src/net/http/http_test.go
@@ -12,7 +12,6 @@ import (
 	"io/fs"
 	"net/url"
 	"os"
-	"os/exec"
 	"reflect"
 	"regexp"
 	"strings"
@@ -55,7 +54,7 @@ func TestForeachHeaderElement(t *testing.T) {
 func TestCmdGoNoHTTPServer(t *testing.T) {
 	t.Parallel()
 	goBin := testenv.GoToolPath(t)
-	out, err := exec.Command(goBin, "tool", "nm", goBin).CombinedOutput()
+	out, err := testenv.Command(t, goBin, "tool", "nm", goBin).CombinedOutput()
 	if err != nil {
 		t.Fatalf("go tool nm: %v: %s", err, out)
 	}
@@ -89,7 +88,7 @@ func TestOmitHTTP2(t *testing.T) {
 	}
 	t.Parallel()
 	goTool := testenv.GoToolPath(t)
-	out, err := exec.Command(goTool, "test", "-short", "-tags=nethttpomithttp2", "net/http").CombinedOutput()
+	out, err := testenv.Command(t, goTool, "test", "-short", "-tags=nethttpomithttp2", "net/http").CombinedOutput()
 	if err != nil {
 		t.Fatalf("go test -short failed: %v, %s", err, out)
 	}
@@ -101,7 +100,7 @@ func TestOmitHTTP2(t *testing.T) {
 func TestOmitHTTP2Vet(t *testing.T) {
 	t.Parallel()
 	goTool := testenv.GoToolPath(t)
-	out, err := exec.Command(goTool, "vet", "-tags=nethttpomithttp2", "net/http").CombinedOutput()
+	out, err := testenv.Command(t, goTool, "vet", "-tags=nethttpomithttp2", "net/http").CombinedOutput()
 	if err != nil {
 		t.Fatalf("go vet failed: %v, %s", err, out)
 	}
diff --git a/src/net/http/serve_test.go b/src/net/http/serve_test.go
index bb380cf4a5..1f215bd843 100644
--- a/src/net/http/serve_test.go
+++ b/src/net/http/serve_test.go
@@ -30,7 +30,6 @@ import (
 	"net/http/internal/testcert"
 	"net/url"
 	"os"
-	"os/exec"
 	"path/filepath"
 	"reflect"
 	"regexp"
@@ -5005,7 +5004,7 @@ func BenchmarkServer(b *testing.B) {
 	defer ts.Close()
 	b.StartTimer()
 
-	cmd := exec.Command(os.Args[0], "-test.run=XXXX", "-test.bench=BenchmarkServer$")
+	cmd := testenv.Command(b, os.Args[0], "-test.run=XXXX", "-test.bench=BenchmarkServer$")
 	cmd.Env = append([]string{
 		fmt.Sprintf("TEST_BENCH_CLIENT_N=%d", b.N),
 		fmt.Sprintf("TEST_BENCH_SERVER_URL=%s", ts.URL),