diff --git a/rootproject/dev.py b/rootproject/dev.py
index 58abb3fc7a..ac41e17295 100644
--- a/rootproject/dev.py
+++ b/rootproject/dev.py
@@ -35,17 +35,38 @@ def _create_temp(contents: str, suffix: str) -> str:
         batch_file_path = batch_file.name
         # Write batch commands to the temporary file
         batch_file.write(contents.encode('utf-8'))
+
+    if sys.platform != "win32":
+        os.chmod(batch_file_path, 0o744)
     return batch_file_path
 
 
-def _cmd(batch_commands:str, cwd=None):
-    import subprocess
+def _cmd(batch_commands:str, cwd=None, env=None):
+    use_env = os.environ.copy()
+    if env:
+        use_env.update(env)
 
-    batch_file_path = _create_temp(batch_commands, ".bat")
-    try:
-        subprocess.run(['cmd', '/c', batch_file_path], input=b'\n', check=True, cwd=cwd)
-    finally:
-        os.remove(batch_file_path)
+    print('using JAVA_HOME:', use_env['JAVA_HOME'])
+
+    if sys.platform == "win32":
+        batch_file_path = _create_temp(batch_commands, ".bat")
+        print(batch_commands)
+        try:
+            subprocess.run(
+                ["cmd", "/c", batch_file_path], input=b"\n", check=True, cwd=cwd, env=env
+            )
+        finally:
+            os.remove(batch_file_path)
+    else:
+        batch_file_path = _create_temp(batch_commands, ".sh")
+        print(batch_commands)
+        try:
+            args = ['bash', batch_file_path]
+            subprocess.run(args, input=b"\n", check=True, cwd=cwd, env=env)
+        except:
+            print("Failed running: " + subprocess.list2cmdline(args), file=sys.stderr)
+        finally:
+            os.remove(batch_file_path)
 
 
 def update_pydevd_bins():
@@ -133,15 +154,25 @@ def write_and_exit(msg):
 def build_pydev_in_build_dir(pydevd_binaries='true'):
     pydevd_binaries = 0 if str(pydevd_binaries).lower() in ('0', 'false', 'f') else 1
     if 'SIGN_KEYSTORE' not in os.environ:
-        write_and_exit('SIGN_KEYSTORE not defined in the os.environ.')
-
-    BUILD_DIR = 'X:/pydev_build/build_dir'
-    BASE_LOCAL_PYDEV_GIT = 'X:/liclipsews/liclipsews/Pydev'  # git://github.com/fabioz/Pydev.git could be used to build with the repo.
-    JAVA_HOME = 'D:/bin/jdk-17.0.8.1+1'
-    MAVEN_BIN = 'X:/liclipsews/maven/apache-maven-3.9.5/bin'
+        if sys.platform == 'win32':
+            write_and_exit('SIGN_KEYSTORE not defined in the os.environ.')
+
+    if sys.platform == "win32":
+        JAVA_HOME = "D:/bin/jdk-17.0.8.1+1"
+        MAVEN_BIN = "X:/liclipsews/maven/apache-maven-3.9.5/bin"
+        BUILD_DIR = 'X:/pydev_build/build_dir'
+        BASE_LOCAL_PYDEV_GIT = 'X:/liclipsews/liclipsews/Pydev'  # git://github.com/fabioz/Pydev.git could be used to build with the repo.
+    else:
+        JAVA_HOME = "/Library/Java/JavaVirtualMachines/temurin-17.jdk/Contents/Home"
+        MAVEN_BIN = os.path.expanduser("~/Desktop/dev/liclipsews/maven/apache-maven-3.9.9/bin")
+        BUILD_DIR = os.path.expanduser("~/Desktop/dev/build-pydev")
+        BASE_LOCAL_PYDEV_GIT = os.path.expanduser('~/Desktop/dev/liclipsews/liclipsews/Pydev')  # git://github.com/fabioz/Pydev.git could be used to build with the repo.
 
     build_binaries_instructions = ''
     if pydevd_binaries:
+        if sys.platform != 'win32':
+            raise AssertionError('pydev binaries currently only supported for windows')
+
         build_binaries_instructions = '''
 set PYTHONPATH=%BUILD_DIR%/Pydev/plugins/org.python.pydev.core/pysrc
 set FORCE_PYDEVD_VC_VARS=C:/Program Files (x86)/Microsoft Visual Studio/2017/BuildTools/VC/Auxiliary/Build/vcvars64.bat
@@ -150,20 +181,19 @@ def build_pydev_in_build_dir(pydevd_binaries='true'):
 '''
 
     os.makedirs(BUILD_DIR, exist_ok=True)
-    _cmd(rf'''
-@echo off
-set BRANCH=master
-
-set JAVA_HOME={JAVA_HOME}
-set MAVEN_BIN={MAVEN_BIN}
-set BUILD_DIR={BUILD_DIR}
-SET MAVEN_OPTS=-Xmx1024m
 
-set PATH=%MAVEN_BIN%;%PATH%
-set PATH=%JAVA_HOME%/bin;%PATH%
-set PATH="C:/Program Files/Git/bin/";%PATH%
+    env = {
+        'BRANCH': 'master',
+        'JAVA_HOME': JAVA_HOME,
+        'MAVEN_BIN': MAVEN_BIN,
+        'BUILD_DIR': BUILD_DIR,
+        'MAVEN_OPTS':'-Xmx1024m',
+        'PATH': os.environ['PATH'] + os.path.pathsep + MAVEN_BIN + os.path.pathsep + JAVA_HOME
+    }
 
-cd %BUILD_DIR%
+    if sys.platform == 'win32':
+        contents = rf'''
+@echo off
 git clone {BASE_LOCAL_PYDEV_GIT}
 cd Pydev
 git reset --hard
@@ -181,7 +211,29 @@ def build_pydev_in_build_dir(pydevd_binaries='true'):
 {build_binaries_instructions}
 
 mvn install -Dsign-release=true
-''', cwd=BUILD_DIR)
+'''
+    else:
+        contents = rf'''
+git clone {BASE_LOCAL_PYDEV_GIT}
+cd Pydev
+git reset --hard
+git clean -f -d -x
+git checkout -f
+git remote update
+git fetch
+git checkout $BRANCH
+git fetch origin $BRANCH
+git reset --hard origin/$BRANCH
+git submodule foreach --recursive git reset --hard
+git submodule foreach --recursive git clean -f -d -x
+git submodule update --init --recursive
+
+{build_binaries_instructions}
+
+mvn install -Dmaven.test.skip
+
+'''
+    _cmd(contents, cwd=BUILD_DIR, env=env)
 
 
 def copy_and_zips():
@@ -262,7 +314,6 @@ def add_to_github():
     import webbrowser
     webbrowser.open(rf'''https://github.com/fabioz/Pydev/releases/new?tag=pydev_{_VERSION.replace('.', '_')}''')
 
-
 # /*[[[cog
 #  # Note: run
 #  # python -m dev codegen
@@ -300,6 +351,7 @@ def codegen():
             sys.stderr.write('Error with cog!')
             sys.exit(retcode)
 
+
 def _gen_fire_args() -> dict[str, Callable]:
     """Generate a dict of arguments to be called by fire.Fire()"""
     globals_ = globals()