Beefy Boxes and Bandwidth Generously Provided by pair Networks
Clear questions and runnable code
get the best and fastest answer

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
First off why does this only occur with %SystemRoo­t%

Other environment variables can be put in path components and CleanPath will handle them just fine. What it does special with %SystemRoot% is that if you put a directory in your $ENV{PATH} that is a subdirectory of %SystemRoot% without saying "%SystemRoot%", then CleanPath changes it to use %SystemRoot%. So "CleanPath C:\Windows\system32\trojans" will actually put "%SystemRoot%\trojans" into your path.

This feature was mostly added because the big motivation for writing this script was that a coworker had written a script to flush $ENV{PATH} changes into the registry and done a bad job of it, not realizing that $ENV{PATH} doesn't match what gets put in the registry for several reasons (notably user-specific path components and expansion of %SystemRoot%) so I wanted to clean this mess up easily (quite a few system had been corrupted by this before anyone noticed). If you use %SystemRoot%, then those entries in your $ENV{PATH} continue to work even if the drive letter for that partition changes on your when you reboot (and I was working in situations where this wasn't that uncommon of a situation); that's why those entries are done that way.

I wasn't too worried about the bug you pointed out because just running CleanPath twice takes care of it. I didn't include your fix at first because I needed to look over how I was using %GoodPath to convince myself that there were no problems with that fix. I just now incorporated your fix (slightly differently) as I was making some other minor updates. Thanks!

- tye        

In reply to Re^2: CleanPath (updated) by tye
in thread CleanPath by tye

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?

What's my password?
Create A New User
Domain Nodelet?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others taking refuge in the Monastery: (4)
As of 2021-09-23 12:09 GMT
Find Nodes?
    Voting Booth?

    No recent polls found