Re: PATH and SystemRoot oddity
On 1 Dec, Igor Pechtchanski wrote: The interpolation of the %...% variables into REG_MULTI_SZ values happens on the Windows level, before Cygwin ever sees them. Windows treats these variables case-insensitively. HTH, It does - thanks again, Igor. luke -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: PATH and SystemRoot oddity
On 26 Nov, Igor Pechtchanski wrote: On Fri, 26 Nov 2004, Luke Kendall wrote: I see that by default PATH includes some entries like %SystemRoot%/System32 I also note that $SystemRoot is undefined, yet $SYSTEMROOT contains the expected C:\WINDOWS value. This of course causes problems. Would a backslash-style path work correctly if it were properly interpolated into the PATH? Is the % notation special magic for Cygwin to handle DOS-isms? The case variance may be of interest, in that case. The case variance is a red herring. Could you explain some more? I was thinking that if SystemRoot but SYSTEMROOT was, it might be relevant. Also, Cygwin doesn't understand the %...% notation. Sure, of course. OTOH, you're not supposed to be seeing these entries in the actual value of your PATH, either in Windows or in Cygwin. Such entries are usually caused by the wrong type assigned to the PATH value in the registry (REG_SZ instead of REG_EXPAND_SZ). Some buggy installers change the type of the PATH registry entry. Ah! So at some point in the machine's history, some buggy installer altered this, and it has knock-on effects like this. You need to change it back, so that strings like %SystemRoot% will be automatically expanded by Windows before Cygwin ever sees them. HTH, Igor I couldn't find an entry for PATH that seemed to be the normal environment variable - only things buried inside other items like CLSID that seemed to be used for other things. In the Control Panel I found that the system environment variable for PATH was defined to use %SystemRoot%, so I suspect that's where it's coming from. And you're right, it's set badly for Windows and Cygwin, and interfering with all shells: C:\echo %PATH% %SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem C:net use 'net' is not recognized as an internal or external command, operable program or batch file. Thanks, Igor luke -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: PATH and SystemRoot oddity
Igor Pechtchanski wrote:
First off, you could have actually removed the offending entries from the
PATH using something like
OFFENDING_ENTRY=/cygdrive/c/ClearCase/bin
PATH=`echo $PATH | sed s#:$OFFENDING_ENTRY##`
Alternatively, if you want to translate any Win32 path to a Cygwin
(POSIX) path, use the cygpath utility, like this:
PATH=${PATH}:`cygpath -u $SYSTEMROOT/system32`
Glad it helped. Out of curiousity, which one of the two solutions above
did you mean?
Originally, I was looking for something like 'cygpath' in it, but I was
pleasantly surprised by the other solution:
OFFENDING_ENTRY=/cygdrive/c/ClearCase/bin
PATH=`echo $PATH | sed s#:$OFFENDING_ENTRY##`
I'm now modifying it to remove paths with 'Rational' in it. I'd rather
not modify the original 'profile' if I can help it. Makes it easier to
destroy cygwin and reinstall from scratch.
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Re: PATH and SystemRoot oddity
On Sat, 27 Nov 2004, Jason Curl wrote:
Igor Pechtchanski wrote:
First off, you could have actually removed the offending entries
from the PATH using something like
OFFENDING_ENTRY=/cygdrive/c/ClearCase/bin
PATH=`echo $PATH | sed s#:$OFFENDING_ENTRY##`
Alternatively, if you want to translate any Win32 path to a Cygwin
(POSIX) path, use the cygpath utility, like this:
PATH=${PATH}:`cygpath -u $SYSTEMROOT/system32`
Glad it helped. Out of curiosity, which one of the two solutions above
did you mean?
Originally, I was looking for something like 'cygpath' in it, but I was
pleasantly surprised by the other solution:
OFFENDING_ENTRY=/cygdrive/c/ClearCase/bin
PATH=`echo $PATH | sed s#:$OFFENDING_ENTRY##`
I'm now modifying it to remove paths with 'Rational' in it.
FWIW, the above 'sed' solution will only work for removing one path (with
no special characters, like '\'). For removing any path with Rational
in it, the regular expression will have to be more elaborate, e.g.,
OFFENDING_KEYWORD=Rational
PATH=`echo $PATH | sed s#:[^:]*$OFFENDING_KEYWORD[^:]*##`
Note that this still won't work properly if OFFENDING_KEYWORD contains
'\'s or '*'s. If you want proper quoting, you should probably use the
perl regular expressions, in which case it might be easier to simply break
up the PATH at ':'s and reconstruct it after removing all entries with the
offending keyword, e.g.,
OFFENDING_KEYWORD=Rational
PATH=`echo $PATH | perl -pe
'$_=join(:,grep(!/\Q'$OFFENDING_KEYWORD'\E/,split(/:/)))'`
I'd rather not modify the original 'profile' if I can help it. Makes it
easier to destroy cygwin and reinstall from scratch.
Well, if you're worried about modifying the default /etc/profile, you
might consider putting the above into a /etc/profile.d script, e.g.,
/etc/profile.d/no_rational.sh, which will be executed by the default
/etc/profile. If you use [t]csh, you might also want to consider cooking
up an equivalent /etc/profile.d/no_rational.csh script.
HTH,
Igor
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Re: PATH and SystemRoot oddity
Brian Dessent wrote: Luke Kendall wrote: I see that by default PATH includes some entries like %SystemRoot%/System32 I also note that $SystemRoot is undefined, yet $SYSTEMROOT contains the expected C:\WINDOWS value. This of course causes problems. Would a backslash-style path work correctly if it were properly interpolated into the PATH? Is the % notation special magic for Cygwin to handle DOS-isms? The case variance may be of interest, in that case. I think you're falsely attributing your errors to this. The cygwin DLL takes care of all the win32 - posix translation of the path, and it knows about %SystemRoot%. If this were really the case don't you think tons of things would break? Try echo $PATH at your shell prompt and you'll see that the systemroot is correctly substituted. FWIW, I think environment variables are case-insensitive at the win32 API level. They preserve case but are not sensitive to it, just like ntfs. Brian I have a similar question: I had to modify 'profile' to change $PATH=:$PATH to $PATH= How can I simply add $SYSTEMROOT:$SYSTEMROOT/system32 to this? It doesn't work as-is because $SYSTEMROOT = C:\Windows (and this is therefore not interpreted by the path). Rephrasing, what do I use to translate C:\WINDOWS to /cygdrive/c/windows? I had to do this because some nasty things in my path were causing problems (e.g. ClearQuest/ClearCase) TIA, Jason. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: PATH and SystemRoot oddity
At 03:14 PM 11/26/2004, you wrote: Brian Dessent wrote: Luke Kendall wrote: I see that by default PATH includes some entries like %SystemRoot%/System32 I also note that $SystemRoot is undefined, yet $SYSTEMROOT contains the expected C:\WINDOWS value. This of course causes problems. Would a backslash-style path work correctly if it were properly interpolated into the PATH? Is the % notation special magic for Cygwin to handle DOS-isms? The case variance may be of interest, in that case. I think you're falsely attributing your errors to this. The cygwin DLL takes care of all the win32 - posix translation of the path, and it knows about %SystemRoot%. If this were really the case don't you think tons of things would break? Try echo $PATH at your shell prompt and you'll see that the systemroot is correctly substituted. FWIW, I think environment variables are case-insensitive at the win32 API level. They preserve case but are not sensitive to it, just like ntfs. Brian I have a similar question: I had to modify 'profile' to change $PATH=:$PATH to $PATH= How can I simply add $SYSTEMROOT:$SYSTEMROOT/system32 to this? It doesn't work as-is because $SYSTEMROOT = C:\Windows (and this is therefore not interpreted by the path). Rephrasing, what do I use to translate C:\WINDOWS to /cygdrive/c/windows? I had to do this because some nasty things in my path were causing problems (e.g. ClearQuest/ClearCase) I'll state one obvious option - just add /cygdrive/c/windows, etc. in your 'profile'. If you want Cygwin to do the translation for you, change the path in 'cygwin.bat' (or whatever your startup link is) instead. -- Larry Hall http://www.rfk.com RFK Partners, Inc. (508) 893-9779 - RFK Office 838 Washington Street (508) 893-9889 - FAX Holliston, MA 01746 -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: PATH and SystemRoot oddity
On Fri, 26 Nov 2004, Jason Curl wrote:
I have a similar question: I had to modify 'profile' to change
$PATH=:$PATH
to
$PATH=
How can I simply add $SYSTEMROOT:$SYSTEMROOT/system32 to this? It
doesn't work as-is because $SYSTEMROOT = C:\Windows (and this is
therefore not interpreted by the path). Rephrasing, what do I use to
translate C:\WINDOWS to /cygdrive/c/windows?
I had to do this because some nasty things in my path were causing
problems (e.g. ClearQuest/ClearCase)
First off, you could have actually removed the offending entries from the
PATH using something like
OFFENDING_ENTRY=/cygdrive/c/ClearCase/bin
PATH=`echo $PATH | sed s#:$OFFENDING_ENTRY##`
Alternatively, if you want to translate any Win32 path to a Cygwin (POSIX)
path, use the cygpath utility, like this:
PATH=${PATH}:`cygpath -u $SYSTEMROOT/system32`
HTH,
Igor
P.S. FWIW, the question is not that similar, and you should probably have
started a new thread with it.
--
http://cs.nyu.edu/~pechtcha/
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'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
The Sun will pass between the Earth and the Moon tonight for a total
Lunar eclipse... -- WCBS Radio Newsbrief, Oct 27 2004, 12:01 pm EDT
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Re: PATH and SystemRoot oddity
On Fri, 26 Nov 2004, Luke Kendall wrote: I see that by default PATH includes some entries like %SystemRoot%/System32 I also note that $SystemRoot is undefined, yet $SYSTEMROOT contains the expected C:\WINDOWS value. This of course causes problems. Would a backslash-style path work correctly if it were properly interpolated into the PATH? Is the % notation special magic for Cygwin to handle DOS-isms? The case variance may be of interest, in that case. The case variance is a red herring. Also, Cygwin doesn't understand the %...% notation. OTOH, you're not supposed to be seeing these entries in the actual value of your PATH, either in Windows or in Cygwin. Such entries are usually caused by the wrong type assigned to the PATH value in the registry (REG_SZ instead of REG_EXPAND_SZ). Some buggy installers change the type of the PATH registry entry. You need to change it back, so that strings like %SystemRoot% will be automatically expanded by Windows before Cygwin ever sees them. HTH, Igor -- http://cs.nyu.edu/~pechtcha/ |\ _,,,---,,_[EMAIL PROTECTED] ZZZzz /,`.-'`'-. ;-;;,_[EMAIL PROTECTED] |,4- ) )-,_. ,\ ( `'-' Igor Pechtchanski, Ph.D. '---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow! The Sun will pass between the Earth and the Moon tonight for a total Lunar eclipse... -- WCBS Radio Newsbrief, Oct 27 2004, 12:01 pm EDT -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: PATH and SystemRoot oddity
Igor Pechtchanski wrote:
On Fri, 26 Nov 2004, Jason Curl wrote:
I have a similar question: I had to modify 'profile' to change
$PATH=:$PATH
to
$PATH=
How can I simply add $SYSTEMROOT:$SYSTEMROOT/system32 to this? It
doesn't work as-is because $SYSTEMROOT = C:\Windows (and this is
therefore not interpreted by the path). Rephrasing, what do I use to
translate C:\WINDOWS to /cygdrive/c/windows?
I had to do this because some nasty things in my path were causing
First off, you could have actually removed the offending entries from the
PATH using something like
OFFENDING_ENTRY=/cygdrive/c/ClearCase/bin
PATH=`echo $PATH | sed s#:$OFFENDING_ENTRY##`
Alternatively, if you want to translate any Win32 path to a Cygwin (POSIX)
path, use the cygpath utility, like this:
PATH=${PATH}:`cygpath -u $SYSTEMROOT/system32`
HTH,
Igor
P.S. FWIW, the question is not that similar, and you should probably have
started a new thread with it.
Sorry - next time it will be a new thread. OTOH, this is exactly the
solution I didn't know how to implement. Spasibo Bolshoi!
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Re: PATH and SystemRoot oddity
On Fri, 26 Nov 2004, Jason Curl wrote:
Igor Pechtchanski wrote:
On Fri, 26 Nov 2004, Jason Curl wrote:
I have a similar question: I had to modify 'profile' to change
$PATH=:$PATH
to
$PATH=
How can I simply add $SYSTEMROOT:$SYSTEMROOT/system32 to this? It
doesn't work as-is because $SYSTEMROOT = C:\Windows (and this is
therefore not interpreted by the path). Rephrasing, what do I use to
translate C:\WINDOWS to /cygdrive/c/windows?
I had to do this because some nasty things in my path were causing
First off, you could have actually removed the offending entries from the
PATH using something like
OFFENDING_ENTRY=/cygdrive/c/ClearCase/bin
PATH=`echo $PATH | sed s#:$OFFENDING_ENTRY##`
Alternatively, if you want to translate any Win32 path to a Cygwin
(POSIX) path, use the cygpath utility, like this:
PATH=${PATH}:`cygpath -u $SYSTEMROOT/system32`
HTH,
Igor
P.S. FWIW, the question is not that similar, and you should probably have
started a new thread with it.
Sorry - next time it will be a new thread. OTOH, this is exactly the
solution I didn't know how to implement.
Glad it helped. Out of curiousity, which one of the two solutions above
did you mean?
Spasibo Bolshoi!
Na zdorovie.
Igor
--
http://cs.nyu.edu/~pechtcha/
|\ _,,,---,,_[EMAIL PROTECTED]
ZZZzz /,`.-'`'-. ;-;;,_[EMAIL PROTECTED]
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'---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow!
The Sun will pass between the Earth and the Moon tonight for a total
Lunar eclipse... -- WCBS Radio Newsbrief, Oct 27 2004, 12:01 pm EDT
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PATH and SystemRoot oddity
I see that by default PATH includes some entries like %SystemRoot%/System32 I also note that $SystemRoot is undefined, yet $SYSTEMROOT contains the expected C:\WINDOWS value. This of course causes problems. Would a backslash-style path work correctly if it were properly interpolated into the PATH? Is the % notation special magic for Cygwin to handle DOS-isms? The case variance may be of interest, in that case. luke -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: PATH and SystemRoot oddity
Luke Kendall wrote: I see that by default PATH includes some entries like %SystemRoot%/System32 I also note that $SystemRoot is undefined, yet $SYSTEMROOT contains the expected C:\WINDOWS value. This of course causes problems. Would a backslash-style path work correctly if it were properly interpolated into the PATH? Is the % notation special magic for Cygwin to handle DOS-isms? The case variance may be of interest, in that case. I think you're falsely attributing your errors to this. The cygwin DLL takes care of all the win32 - posix translation of the path, and it knows about %SystemRoot%. If this were really the case don't you think tons of things would break? Try echo $PATH at your shell prompt and you'll see that the systemroot is correctly substituted. FWIW, I think environment variables are case-insensitive at the win32 API level. They preserve case but are not sensitive to it, just like ntfs. Brian -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
