Thread: setting classpaths in cygwin to use with java
hello all. in my cygwin.bat file, i set my PATH and CLASSPATH variables using the forward slash "/" since cygwin needs the "/" for interpreting the executables in the PATH variable. however, i'd like to set my CLASSPATH using back slashes "\" for java to be able to interpret correctly. i saw an old post about using "cygpath.exe -p -w $CLASSPATH" to return the $CLASSPATH using "\". however, how do i do this within my cygwin.bat file after setting my $CLASSPATH? i want to try to do something like: set CLASSPATH= $(cygwin.exe -p -w $CLASSPATH) * this obviously doesn't work, but i'm trying to find out what the correct equivalent is. thanks... -------------- TERRORIST ATTACK ON AMERICA (tues, sept 11, 2001) Information and Disaster Relief Resources http://www.konrad.ws/special/20010911_terroristAttackOnAmerica/infoAndDisasterReliefResources.htm
Konrad, On Sun, Oct 07, 2001 at 12:52:36AM +0900, Konrad Hernblad wrote: > i want to try to do something like: > > set CLASSPATH= $(cygwin.exe -p -w $CLASSPATH) > * this obviously doesn't work, but i'm trying to find out what the correct > equivalent is. IMO, the proper way to set personal environment variables (e.g., CLASSPATH), is to set them in your .bash_profile (or .bashrc). If you choose to following this suggestion, then remember to start bash with the "--login" option. Jason
Konrad,
In the future, please keep your replies on-list to prevent dangling
threads.
On Mon, Oct 08, 2001 at 11:28:21PM +0900, Konrad Hernblad wrote:
> although it didn't exactly solve my problem, it did prompt me to dig around
> a little more. the problem was that i had mounted my c:\ as "/0" in my
> cygwin/etc/profile file using the following command:
>
> mount -s -b c:/ /0
The above is a very strange mount command. Do you know how it got into
your /etc/profile?
> (etc/profile)
I don't recommend adding personal environment setup to the system-wide
/etc/profile -- use your .bash_profile instead.
> CLASSPATH=/0/java/dev/myPrj
Assuming that you are using Sun's Java (or some other Win32 JVM), then
you must use Win32 and *not* Posix path:
CLASSPATH=$(cygpath -w /0/java/dev/myPrj)
> i tried changing my CLASSPATH env (in either file) to:
>
> CLASSPATH=\\java/dev/myPrj
>
> and when i tried running my program "Test" again (as above), it worked.
I have no idea why the above works.
> however, i still do not understand why a prefix of "/0" does not work if i
> have mounted that prefix to point to "c:\"?
The above should work if you use cygpath as described above.
BTW, cygwin@cygwin.com is probably a more appropriate mailing list for
these types of issues.
Jason
export CLASSPATH=... > -----Original Message----- > From: pgsql-cygwin-owner@postgresql.org > [mailto:pgsql-cygwin-owner@postgresql.org]On Behalf Of Jason Tishler > Sent: Monday, October 08, 2001 9:07 PM > To: Konrad Hernblad > Cc: pgsql-cygwin@postgresql.org > Subject: Re: [CYGWIN] setting classpaths in cygwin to use with java > > > Konrad, > > On Sun, Oct 07, 2001 at 12:52:36AM +0900, Konrad Hernblad wrote: > > i want to try to do something like: > > > > set CLASSPATH= $(cygwin.exe -p -w $CLASSPATH) > > * this obviously doesn't work, but i'm trying to find out what > the correct > > equivalent is. > > IMO, the proper way to set personal environment variables (e.g., > CLASSPATH), is to set them in your .bash_profile (or .bashrc). If you > choose to following this suggestion, then remember to start bash with the > "--login" option. > > Jason > > ---------------------------(end of broadcast)--------------------------- > TIP 4: Don't 'kill -9' the postmaster >
At 07:02 01/10/09 -0400, Jason Tishler wrote: >Konrad, > >In the future, please keep your replies on-list to prevent dangling >threads. will do. sorry. >On Mon, Oct 08, 2001 at 11:28:21PM +0900, Konrad Hernblad wrote: > > although it didn't exactly solve my problem, it did prompt me to dig around > > a little more. the problem was that i had mounted my c:\ as "/0" in my > > cygwin/etc/profile file using the following command: > > > > mount -s -b c:/ /0 > >The above is a very strange mount command. Do you know how it got into >your /etc/profile? i put it there. probably should have gone in .bashprofile instead? i looked at the cygwin docs and it listed a similar command for mounting the c:\ to the posix prefix of your choice. http://sources.redhat.com/ml/cygwin/2001-09/msg00014.html > > (etc/profile) > >I don't recommend adding personal environment setup to the system-wide >/etc/profile -- use your .bash_profile instead. ok, thx. > > CLASSPATH=/0/java/dev/myPrj > >Assuming that you are using Sun's Java (or some other Win32 JVM), then >you must use Win32 and *not* Posix path: > > CLASSPATH=$(cygpath -w /0/java/dev/myPrj) this works (if i add the -p option also) at the cygwin prompt. for example, java -cp $(cygpath -p -w $CLASSPATH) JavaClass * where JavaClass is the name of a .class file. * also /0/java/dev/myPrj is defined in $CLASSPATH this works, but it is very inconvenient to type this long command at the prompt everytime one wants to run a java program. >BTW, cygwin@cygwin.com is probably a more appropriate mailing list for >these types of issues. how can one subscribe to this mailing list? thank you.
Konrad,
On Tue, Oct 09, 2001 at 05:57:48PM +0900, Konrad Hernblad wrote:
> At 07:02 01/10/09 -0400, Jason Tishler wrote:
> > > mount -s -b c:/ /0
> >
> >The above is a very strange mount command. Do you know how it got into
> >your /etc/profile?
>
> i put it there. probably should have gone in .bashprofile instead?
No. The mount command only needs to be executed once since it is
persisted in the Windows registry.
> >Assuming that you are using Sun's Java (or some other Win32 JVM), then
> >you must use Win32 and *not* Posix path:
> >
> > CLASSPATH=$(cygpath -w /0/java/dev/myPrj)
>
> this works (if i add the -p option also) at the cygwin prompt. for example,
Oops, I forgot the "-p" option.
> java -cp $(cygpath -p -w $CLASSPATH) JavaClass
>
> * where JavaClass is the name of a .class file.
> * also /0/java/dev/myPrj is defined in $CLASSPATH
>
> this works, but it is very inconvenient to type this long command at the
> prompt everytime one wants to run a java program.
There is no need. Just define (and export) CLASSPATH appropriately (i.e.,
using Win32 style paths) in your .bash_profile and you will be all set.
> >BTW, cygwin@cygwin.com is probably a more appropriate mailing list for
> >these types of issues.
>
> how can one subscribe to this mailing list?
http://www.cygwin.com/lists.html
Jason