Hi! I fixed some calls to "sys" for you!

benchmarks/benchmark.js

@@ -1,6 +1,6 @@
 
 var Repo = require('git/repo').Repo,
-  sys = require('sys'),
+  util = require('util'),
   fs = require('fs'),
   exec  = require('child_process').exec;
 
@@ -14,7 +14,7 @@ var create_tmp_directory = function(clone_path, callback) {
   // Copy the old directory to the new one
   var child = exec('cp -R ' + clone_path + ' ' + tmp_path, function (error, stdout, stderr) {
       if (error !== null) {
-        sys.puts('exec error: ' + error);
+        util.puts('exec error: ' + error);
         return callback(error, null);
       }
       return callback(null, tmp_path);
@@ -25,7 +25,7 @@ var destroy_directory = function(directory, callback) {
   // Copy the old directory to the new one
   var child = exec('rm -rf ' + directory, function (error, stdout, stderr) {
       if (error !== null) {
-        sys.puts('exec error: ' + error);
+        util.puts('exec error: ' + error);
         return callback(error, null);
       }
       return callback(null, null);    
@@ -125,7 +125,7 @@ var execute_process = function(type) {
 
         var end_time = new Date();
         var total_miliseconds = end_time.getTime() - start_time.getTime();
-        sys.puts("[" + type + "]::executed in: " + (total_miliseconds/1000) + " seconds");        
+        util.puts("[" + type + "]::executed in: " + (total_miliseconds/1000) + " seconds");        
         // Delete the directory
         destroy_directory(target_path, function(err, result) {});
       });      
@@ -144,7 +144,7 @@ if(process.argv.length > 2 && process.argv[2].match(/packobj|commits1|commits2|b
     execute_process(process.argv[2]);
   }  
 } else {
-  sys.puts("Please provide the benchmark you wish to run in the form <node benchmarks [packobj|commits1|commits2|big_revlist|log|diff|commit_diff|heads|all]>")
+  util.puts("Please provide the benchmark you wish to run in the form <node benchmarks [packobj|commits1|commits2|big_revlist|log|diff|commit_diff|heads|all]>")
 }
 
 

lib/diff/diff.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   SequenceCallbacks = require('./callbacks').SequenceCallbacks,
   ContextChange = require('./change').ContextChange,
   Change = require('./change').Change,
@@ -762,7 +762,7 @@ Difference.LCS.__normalize_patchset = function(patchset) {
         });
       }      
     } else {
-      throw "Cannot normalize the hunk: " + sys.inspect(hunk);
+      throw "Cannot normalize the hunk: " + util.inspect(hunk);
     }    
   }));
 }

lib/git/actor.js

@@ -1,4 +1,4 @@
-var sys = require('sys');
+var util = require('util');
 
 Actor = exports.Actor = function(name, email) {
   var _name = name, _email = email;  

lib/git/binary_parser.js

@@ -222,25 +222,25 @@ p.encode_utf8 = function(s) {
 };
 
 p.pprint = function(s) {
-  var sys = require('sys');
+  var util = require('util');
 
   for (var i=0; i<s.length; i++) {
-    if (s.charCodeAt(i)<32) {sys.puts(s.charCodeAt(i)+' : ');}
-    else {sys.puts(s.charCodeAt(i)+' : '+ s.charAt(i));}
+    if (s.charCodeAt(i)<32) {util.puts(s.charCodeAt(i)+' : ');}
+    else {util.puts(s.charCodeAt(i)+' : '+ s.charAt(i));}
   }
 };
 
 p.hprint = function(s) {
-  var sys = require('sys');
+  var util = require('util');
 
   for (var i=0; i<s.length; i++) {
-    if (s.charCodeAt(i)<32) {sys.puts(s.charCodeAt(i)+' : ');}
-    else {sys.puts(s.charCodeAt(i).toString(16)+' : '+ s.charAt(i));}
+    if (s.charCodeAt(i)<32) {util.puts(s.charCodeAt(i)+' : ');}
+    else {util.puts(s.charCodeAt(i).toString(16)+' : '+ s.charAt(i));}
   }
 };
 
 p.hex = function(s) {
-  var sys = require('sys');
+  var util = require('util');
   var string = ''
 
   for (var i=0; i<s.length; i++) {

lib/git/commit.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   Actor = require('./actor').Actor,
   Diff = require('./diff').Diff;
   Tree = require('./tree').Tree;

lib/git/file_index.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   fs = require('fs');
 
 var FileIndex = exports.FileIndex = function(repo_path, callback) {

lib/git/file_window.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   fs = require('fs'),
   Buffer = require('buffer').Buffer;
 
@@ -32,7 +32,7 @@ FileWindow.prototype.index = function(idx) {
     offset = idx[0];
     len = idx[1]
   } else {
-    throw "invalid index param: " + sys.inspect(idx);
+    throw "invalid index param: " + util.inspect(idx);
   }
 
   // Seek position equivalent using a position in the read

lib/git/git.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
     fs = require('fs'),
     GitFileOperations = require('./git_file_operations').GitFileOperations,
     exec = require('child_process').exec,

lib/git/git_file_operations.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   fs = require('fs'),
   exec  = require('child_process').exec;
 
@@ -117,7 +117,7 @@ GitFileOperations.fs_rmdir_r = function(dir, callback) {
   // Copy the old directory to the new one
   var child = exec('rm -rf ' + dir, function (error, stdout, stderr) {
       if (error !== null) {
-        sys.puts('exec error: ' + error);
+        util.puts('exec error: ' + error);
         return callback(error, null);
       }
       return callback(null, null);    

lib/git/git_index.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   Tree = require('./tree').Tree,
   Config = require('./config').Config;
 

lib/git/head.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   Commit = require('./commit').Commit;
 
 var Head = exports.Head = function(name, commit) {

lib/git/internal/git_blob.js

@@ -1,4 +1,4 @@
-var sys = require('sys');
+var util = require('util');
 
 var GitBlob = exports.GitBlob = function(content, repository) {
   var _content = content, _repository = repository;

lib/git/internal/git_commit.js

@@ -1,4 +1,4 @@
-var sys = require('sys'), 
+var util = require('util'), 
   UserInfo = require('../user_info').UserInfo;
 
 var GitCommit = exports.GitCommit = function(tree, parent, author, committer, message, headers, repository) {
@@ -51,7 +51,7 @@ GitCommit.from_raw = function(raw_object, repository) {
       committer = new UserInfo(value);
     } else {
       // Unknow header
-      sys.puts("unknow header '" + key + "' in commit " + raw_object.sha_hex())
+      util.puts("unknow header '" + key + "' in commit " + raw_object.sha_hex())
     }
   })
 

lib/git/internal/git_tag.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   UserInfo = require('../user_info').UserInfo;
 
 var GitTag = exports.GitTag = function(object, type, tag, tagger, message, repository) {
@@ -48,7 +48,7 @@ GitTag.from_raw = function(raw_object, repository) {
     } else if(key == 'tagger') {
       tagger = new UserInfo(value);
     } else {
-      sys.puts("unknown header '" + key);
+      util.puts("unknown header '" + key);
     }
   });
 

lib/git/internal/git_tree.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   BinaryParser = require('../binary_parser').BinaryParser,
   DirectoryEntry = require('../internal/directory_entry').DirectoryEntry;
 

lib/git/loose_storage.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   fs = require('fs'),
   BinaryParser = require('./binary_parser').BinaryParser,
   Zlib = require('../zlib/zlib').Zlib,

lib/git/mime/mime_types.js

@@ -1,4 +1,4 @@
-var sys = require('sys');
+var util = require('util');
 
 // All the mime types
 var mime_definition = "  # application/*\n\

lib/git/pack_storage.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   fs = require('fs'),
   Buffer = require('buffer').Buffer,
   BinaryParser = require('./binary_parser').BinaryParser,

lib/git/raw_object.js

@@ -1,5 +1,5 @@
 var crypto = require('crypto'),
-  sys = require('sys'),
+  util = require('util'),
   Buffer = require('buffer').Buffer,
   BinaryParser = require('./binary_parser').BinaryParser;
 

lib/git/repo.js

@@ -2,7 +2,7 @@ var Head = require('./head').Head,
   Git = require('./git').Git,
   Commit = require('./commit').Commit,
   fs = require('fs'),
-  sys = require('sys'),
+  util = require('util'),
   Tree = require('./tree').Tree,
   Blob = require('./blob').Blob,
   Head = require('./head').Head,

lib/git/repository.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   GitObject = require('./git_object').GitObject,
   fs = require('fs'),
   LooseStorage = require('./loose_storage').LooseStorage,

lib/git/status.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   GitFileOperations = require('./git_file_operations').GitFileOperations,
   StatusFile = require('./status_file').StatusFile;
 

lib/git/status_file.js

@@ -1,4 +1,4 @@
-var sys = require('sys');
+var util = require('util');
 
 var StatusFile = exports.StatusFile = function(repo , hash) {
   var _repo = repo;

lib/git/sub_module.js

@@ -1,4 +1,4 @@
-var sys = require('sys');
+var util = require('util');
 
 var Submodule = exports.Submodule = function(repo, id, mode, name) {
   var _repo = repo, _id = id, _mode = mode, _name = name;

lib/git/tree.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   Submodule = require('./sub_module').Submodule,
   Blob = require('./blob').Blob;
 

lib/git/user_info.js

@@ -1,4 +1,4 @@
-var sys = require('sys'),
+var util = require('util'),
   StringUtil = require('../sprintf/sprintf').StringUtil;
 
 var UserInfo = exports.UserInfo = function(string) {