diff --git a/Modules/CMakeDetermineSystem.cmake b/Modules/CMakeDetermineSystem.cmake
index dc26258eac..dd8d30e3d9 100644
--- a/Modules/CMakeDetermineSystem.cmake
+++ b/Modules/CMakeDetermineSystem.cmake
@@ -68,7 +68,7 @@
       endif()
       if(_CMAKE_APPLE_SILICON_PROCESSOR)
         if(";${_CMAKE_APPLE_SILICON_PROCESSOR};" MATCHES "^;(arm64|x86_64);$")
-          execute_process(COMMAND sysctl -q hw.optional.arm64
+          execute_process(COMMAND @sysctl@ -q hw.optional.arm64
             OUTPUT_VARIABLE _sysctl_stdout
             ERROR_VARIABLE _sysctl_stderr
             RESULT_VARIABLE _sysctl_result
diff --git a/Modules/Platform/Darwin-Initialize.cmake b/Modules/Platform/Darwin-Initialize.cmake
index 31dd4346b1..7c4f123a1d 100644
--- a/Modules/Platform/Darwin-Initialize.cmake
+++ b/Modules/Platform/Darwin-Initialize.cmake
@@ -28,7 +28,7 @@
 if(NOT CMAKE_CROSSCOMPILING AND
    CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND
    CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "^(arm64|x86_64)$")
-  execute_process(COMMAND sysctl -q hw.optional.arm64
+  execute_process(COMMAND @sysctl@ -q hw.optional.arm64
     OUTPUT_VARIABLE _sysctl_stdout
     ERROR_VARIABLE _sysctl_stderr
     RESULT_VARIABLE _sysctl_result
diff --git a/Modules/ProcessorCount.cmake b/Modules/ProcessorCount.cmake
index 260b6631c0..ffb8fcd8d2 100644
--- a/Modules/ProcessorCount.cmake
+++ b/Modules/ProcessorCount.cmake
@@ -87,8 +87,7 @@
 
   if(NOT count)
     # Mac, FreeBSD, OpenBSD (systems with sysctl):
-    find_program(ProcessorCount_cmd_sysctl sysctl
-      PATHS /usr/sbin /sbin)
+    set(ProcessorCount_cmd_sysctl @sysctl@)
     mark_as_advanced(ProcessorCount_cmd_sysctl)
     if(ProcessorCount_cmd_sysctl)
       execute_process(COMMAND ${ProcessorCount_cmd_sysctl} -n hw.ncpu
diff --git a/Source/kwsys/ProcessUNIX.c b/Source/kwsys/ProcessUNIX.c
index a918b8d9a7..36145707e1 100644
--- a/Source/kwsys/ProcessUNIX.c
+++ b/Source/kwsys/ProcessUNIX.c
@@ -2503,7 +2503,7 @@
    have two integers to store: the pid and then the ppid.  */
 #if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__) ||       \
   defined(__OpenBSD__) || defined(__GLIBC__) || defined(__GNU__)
-#  define KWSYSPE_PS_COMMAND "ps axo pid,ppid"
+#  define KWSYSPE_PS_COMMAND "@ps@ axo pid,ppid"
 #  define KWSYSPE_PS_FORMAT "%d %d\n"
 #elif defined(__sun) && (defined(__SVR4) || defined(__svr4__)) /* Solaris */
 #  define KWSYSPE_PS_COMMAND "ps -e -o pid,ppid"
diff --git a/Source/kwsys/SystemInformation.cxx b/Source/kwsys/SystemInformation.cxx
index 0a7cc380c3..9923dc4ab9 100644
--- a/Source/kwsys/SystemInformation.cxx
+++ b/Source/kwsys/SystemInformation.cxx
@@ -3876,7 +3876,7 @@
   long long memUsed = 0;
   pid_t pid = getpid();
   std::ostringstream oss;
-  oss << "ps -o rss= -p " << pid;
+  oss << "@ps@ -o rss= -p " << pid;
   FILE* file = popen(oss.str().c_str(), "r");
   if (!file) {
     return -1;
diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt
index 33bb304cf7..7dbda40a81 100644
--- a/Tests/CMakeLists.txt
+++ b/Tests/CMakeLists.txt
@@ -216,7 +216,7 @@
   endif()
 
   if(CMAKE_SYSTEM_NAME STREQUAL "Darwin" AND NOT DEFINED CMake_TEST_APPLE_SILICON)
-    execute_process(COMMAND sysctl -q hw.optional.arm64
+    execute_process(COMMAND @sysctl@ -q hw.optional.arm64
       OUTPUT_VARIABLE _sysctl_stdout
       ERROR_VARIABLE  _sysctl_stderr
       RESULT_VARIABLE _sysctl_result