Merged revisions 86794,86798,86801 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

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  r86794 | georg.brandl | 2010-11-26 12:50:13 +0100 (Fr, 26 Nov 2010) | 1 line

  #10526: fix typo.
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  r86798 | georg.brandl | 2010-11-26 13:05:48 +0100 (Fr, 26 Nov 2010) | 1 line

  #10420: fix docs of bdb.effective().
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  r86801 | georg.brandl | 2010-11-26 13:12:14 +0100 (Fr, 26 Nov 2010) | 1 line

  Better example for os.system(): do not change the system time.
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diff --git a/Doc/tutorial/stdlib.rst b/Doc/tutorial/stdlib.rst
index 955ce73..844f8bc 100644
--- a/Doc/tutorial/stdlib.rst
+++ b/Doc/tutorial/stdlib.rst
@@ -14,11 +14,11 @@
 operating system::
 
    >>> import os
-   >>> os.system('time 0:02')
-   0
    >>> os.getcwd()      # Return the current working directory
    'C:\\Python26'
-   >>> os.chdir('/server/accesslogs')
+   >>> os.chdir('/server/accesslogs')   # Change current working directory
+   >>> os.system('mkdir today')   # Run the command mkdir in the system shell
+   0
 
 Be sure to use the ``import os`` style instead of ``from os import *``.  This
 will keep :func:`os.open` from shadowing the built-in :func:`open` function which