diff --git a/libc/kernel/tools/clean_header.py b/libc/kernel/tools/clean_header.py
index f86d36e..cfd301a 100755
--- a/libc/kernel/tools/clean_header.py
+++ b/libc/kernel/tools/clean_header.py
@@ -127,7 +127,7 @@
 if __name__ == "__main__":
 
     def usage():
-        print """\
+        print("""\
     usage:  %s [options] <header_path>
 
         options:
@@ -142,7 +142,7 @@
             -d<path>  specify path of cleaned kernel headers
 
         <header_path> must be in a subdirectory of 'original'
-    """ % os.path.basename(sys.argv[0])
+    """ % os.path.basename(sys.argv[0]))
         sys.exit(1)
 
     try:
@@ -211,9 +211,8 @@
         else:
             r = "added"
 
-        print "cleaning: %-*s -> %-*s (%s)" % (35, path, 35, path, r)
+        print("cleaning: %-*s -> %-*s (%s)" % (35, path, 35, path, r))
 
-
-    b.updateGitFiles()
+    b.updateFiles()
 
     sys.exit(0)
diff --git a/libc/kernel/tools/cpp.py b/libc/kernel/tools/cpp.py
index 9f53453..bfa1797 100755
--- a/libc/kernel/tools/cpp.py
+++ b/libc/kernel/tools/cpp.py
@@ -394,10 +394,10 @@
         self._index = 0
 
         if debugCppExpr:
-            print "CppExpr: trying to parse %s" % repr(tokens)
+            print("CppExpr: trying to parse %s" % repr(tokens))
         self.expr = self.parseExpression(0)
         if debugCppExpr:
-            print "CppExpr: got " + repr(self.expr)
+            print("CppExpr: got " + repr(self.expr))
         if self._index != self._num_tokens:
             self.throw(BadExpectedToken, "crap at end of input (%d != %d): %s"
                        % (self._index, self._num_tokens, repr(tokens)))
@@ -405,9 +405,9 @@
     def throw(self, exception, msg):
         if self._index < self._num_tokens:
             tok = self.tokens[self._index]
-            print "%d:%d: %s" % (tok.location.line, tok.location.column, msg)
+            print("%d:%d: %s" % (tok.location.line, tok.location.column, msg))
         else:
-            print "EOF: %s" % msg
+            print("EOF: %s" % msg)
         raise exception(msg)
 
     def expectId(self, id):
@@ -1179,11 +1179,11 @@
 
     def dump(self):
         """Dump all the blocks in current BlockList."""
-        print '##### BEGIN #####'
+        print('##### BEGIN #####')
         for i, b in enumerate(self.blocks):
-            print '### BLOCK %d ###' % i
-            print b
-        print '##### END #####'
+            print('### BLOCK %d ###' % i)
+            print(b)
+        print('##### END #####')
 
     def optimizeIf01(self):
         """Remove the code between #if 0 .. #endif in a BlockList."""
@@ -1510,7 +1510,7 @@
             while i < len(tokens) and tokens[i].location in extent:
                 t = tokens[i]
                 if debugBlockParser:
-                    print ' ' * 2, t.id, t.kind, t.cursor.kind
+                    print(' ' * 2, t.id, t.kind, t.cursor.kind)
                 if (detect_change and t.cursor.extent != extent and
                     t.cursor.kind == CursorKind.PREPROCESSING_DIRECTIVE):
                     break
diff --git a/libc/kernel/tools/kernel.py b/libc/kernel/tools/kernel.py
index b6418a8..6046911 100644
--- a/libc/kernel/tools/kernel.py
+++ b/libc/kernel/tools/kernel.py
@@ -4,7 +4,7 @@
 # list here the macros that you know are always defined/undefined when including
 # the kernel headers
 #
-import sys, cpp, re, os.path, string, time
+import sys, cpp, re, os.path, time
 from defaults import *
 
 verboseSearch = 0
@@ -56,7 +56,7 @@
     #    <mtd/*>
     #
     re_combined_str=\
-       r"^.*<((%s)/[\d\w_\+\.\-/]*)>.*$" % string.join(kernel_dirs,"|")
+       r"^.*<((%s)/[\d\w_\+\.\-/]*)>.*$" % "|".join(kernel_dirs)
 
     re_combined = re.compile(re_combined_str)
 
@@ -100,7 +100,7 @@
 
         if from_file:
             if verboseFind:
-                print "=== %s uses %s" % (from_file, header)
+                print("=== %s uses %s" % (from_file, header))
             self.headers[header].add(from_file)
 
     def parseFile(self, path, arch=None, kernel_root=None):
@@ -114,7 +114,7 @@
         try:
             f = open(path, "rt")
         except:
-            print "!!! can't read '%s'" % path
+            print("!!! can't read '%s'" % path)
             return
 
         hasIncludes = False
@@ -125,10 +125,10 @@
                 break
 
         if not hasIncludes:
-            if verboseSearch: print "::: " + path
+            if verboseSearch: print("::: " + path)
             return
 
-        if verboseSearch: print "*** " + path
+        if verboseSearch: print("*** " + path)
 
         list = cpp.BlockParser().parseFile(path)
         if list:
@@ -205,7 +205,6 @@
 
         if len(kernel_root) > 0 and kernel_root[-1] != "/":
             kernel_root += "/"
-        #print "using kernel_root %s" % kernel_root
         self.archs         = archs
         self.searched      = set(headers)
         self.kernel_root   = kernel_root
@@ -301,7 +300,7 @@
         self.duplicates = False
 
     def parseLine(self,line):
-        line = string.strip(line)
+        line = line.strip(line)
 
         # skip empty and comment lines
         if len(line) == 0 or line[0] == "#":
diff --git a/libc/kernel/tools/update_all.py b/libc/kernel/tools/update_all.py
index d878ec6..6206248 100755
--- a/libc/kernel/tools/update_all.py
+++ b/libc/kernel/tools/update_all.py
@@ -1,11 +1,11 @@
 #!/usr/bin/env python3
 #
-import sys, cpp, kernel, glob, os, re, getopt, clean_header, subprocess, shutil
+import sys, cpp, kernel, glob, os, re, getopt, clean_header, shutil
 from defaults import *
 from utils import *
 
 def Usage():
-    print """\
+    print("""\
   usage: %(progname)s [kernel-original-path] [kernel-modified-path]
 
     this program is used to update all the auto-generated clean headers
@@ -21,14 +21,14 @@
 
       - the clean headers will be placed in 'bionic/libc/kernel/arch-<arch>/asm',
         'bionic/libc/kernel/android', etc..
-""" % { "progname" : os.path.basename(sys.argv[0]) }
+""" % { "progname" : os.path.basename(sys.argv[0]) })
     sys.exit(0)
 
 def ProcessFiles(updater, original_dir, modified_dir, src_rel_dir, update_rel_dir):
     # Delete the old headers before updating to the new headers.
     update_dir = os.path.join(get_kernel_dir(), update_rel_dir)
     shutil.rmtree(update_dir)
-    os.mkdir(update_dir, 0755)
+    os.mkdir(update_dir, 0o755)
 
     src_dir = os.path.normpath(os.path.join(original_dir, src_rel_dir))
     src_dir_len = len(src_dir) + 1
@@ -62,7 +62,7 @@
             else:
                 state = "added"
             update_path = os.path.join(update_rel_dir, rel_path)
-            print "cleaning %s -> %s (%s)" % (src_str, update_path, state)
+            print("cleaning %s -> %s (%s)" % (src_str, update_path, state))
 
 
 # This lets us support regular system calls like __NR_write and also weird
@@ -149,9 +149,10 @@
 # Now process the special files.
 ProcessFiles(updater, original_dir, modified_dir, "scsi", os.path.join("android", "scsi", "scsi"))
 
-updater.updateGitFiles()
+# Copy all of the files.
+updater.updateFiles()
 
 # Now re-generate the <bits/glibc-syscalls.h> from the new uapi headers.
 updater = BatchFileUpdater()
 GenerateGlibcSyscallsHeader(updater)
-updater.updateGitFiles()
+updater.updateFiles()
diff --git a/libc/kernel/tools/utils.py b/libc/kernel/tools/utils.py
index 1b06b1b..3b4828b 100644
--- a/libc/kernel/tools/utils.py
+++ b/libc/kernel/tools/utils.py
@@ -1,6 +1,5 @@
 # common python utility routines for the Bionic tool scripts
 
-import commands
 import logging
 import os
 import string
@@ -146,19 +145,3 @@
 
         for dst in sorted(deletes):
             os.remove(dst)
-
-    def updateGitFiles(self):
-        adds, deletes, edits = self.getChanges()
-
-        if adds:
-            for dst in sorted(adds):
-                self._writeFile(dst)
-            commands.getoutput("git add " + " ".join(adds))
-
-        if deletes:
-            commands.getoutput("git rm " + " ".join(deletes))
-
-        if edits:
-            for dst in sorted(edits):
-                self._writeFile(dst)
-            commands.getoutput("git add " + " ".join(edits))