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how t o read env variable in cygwin

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	how t o read env variable in cygwin by cyg_win_user :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message i m trying to read environment variable in perl using $OSTY = $ENV{OSTYPE}; this will return os type as "linux" or "solaris". but when i try for cygwin it returns empty string. is the some other syntax of way of finding value of env variable in cygwin
	Re: how t o read env variable in cygwin by Eric Blake :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to cyg_win_user on 3/27/2006 3:12 AM: > i m trying to read environment variable in perl using > > $OSTY = $ENV{OSTYPE}; > this will return os type as "linux" or "solaris". but when i try for cygwin > it returns empty string. is the some other syntax of way of finding value of > env variable in cygwin What shell are you using? OSTYPE is auto-set to "cygwin" by bash, but not by other shells (including if you are starting perl directly from cmd.com). Rather than reading an environment variable that is not standardized and might not be set, you could always use 'uname -s' instead. - -- Life is short - so eat dessert first! Eric Blake ebb9@... -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.1 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFEJ/J884KuGfSFAYARAgt4AJ9Qlatz4Tmf+Xd+p2UmmGXMvHgU9QCgqGSi SQOmKSDgd8mWnEuGwIuvzXQ= =62NW -----END PGP SIGNATURE----- -- 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: how t o read env variable in cygwin by Dave Korn :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On 27 March 2006 15:11, Eric Blake wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > According to cyg_win_user on 3/27/2006 3:12 AM: >> i m trying to read environment variable in perl using >> >> $OSTY = $ENV{OSTYPE}; >> this will return os type as "linux" or "solaris". but when i try for cygwin >> it returns empty string. is the some other syntax of way of finding value >> of env variable in cygwin > > What shell are you using? OSTYPE is auto-set to "cygwin" by bash, but not > by other shells (including if you are starting perl directly from > cmd.com). Rather than reading an environment variable that is not > standardized and might not be set, you could always use 'uname -s' instead. I'm no perl guru, but it really looks to me like OSTYPE isn't getting imported to perl's %ENV because it's only a Bash shell variable, not a system environment variable. dk@rainbow /artimi/software/firmware/build2> set \| grep OSTYPE OSTYPE=cygwin dk@rainbow /artimi/software/firmware/build2> env \| grep OSTYPE dk@rainbow /artimi/software/firmware/build2> perl -e 'foreach $key (sort keys(%ENV)) { print "$key = $ENV{$key}\n" ; } ' \| grep OSTYPE dk@rainbow /artimi/software/firmware/build2> I also find this is the case on RH8, so I don't know why the OP reckons it works on Linux; could be some local modification to his startup profile or anything really. Exporting it does the trick, as you might expect: dk@rainbow /artimi/software/firmware/build2> export OSTYPE dk@rainbow /artimi/software/firmware/build2> env \| grep OSTYPE OSTYPE=cygwin dk@rainbow /artimi/software/firmware/build2> perl -e 'foreach $key (sort keys(%ENV)) { print "$key = $ENV{$key}\n" ; } ' \| grep OSTYPE OSTYPE = cygwin dk@rainbow /artimi/software/firmware/build2> cheers, DaveK -- Can't think of a witty .sigline today.... -- 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: how t o read env variable in cygwin by Igor Peshansky :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On Mon, 27 Mar 2006, Eric Blake wrote: > According to cyg_win_user on 3/27/2006 3:12 AM: > > i m trying to read environment variable in perl using > > > > $OSTY = $ENV{OSTYPE}; > > this will return os type as "linux" or "solaris". but when i try for > > cygwin it returns empty string. is the some other syntax of way of > > finding value of env variable in cygwin > > What shell are you using? OSTYPE is auto-set to "cygwin" by bash, but > not by other shells (including if you are starting perl directly from > cmd.com). Rather than reading an environment variable that is not > standardized and might not be set, you could always use 'uname -s' > instead. Or use Perl's builtin $^O variable, which should be auto-set to "cygwin" (all lowercase). "man perlvar" for more info. Igor -- http://cs.nyu.edu/~pechtcha/ \|\ _,,,---,,_ pechtcha@... \| igor@... ZZZzz /,`.-'`' -. ;-;;,_ Igor Peshansky, Ph.D. (name changed!) \|,4- ) )-,_. ,\ ( `'-' old name: Igor Pechtchanski '---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow! "Las! je suis sot... -Mais non, tu ne l'es pas, puisque tu t'en rends compte." "But no -- you are no fool; you call yourself a fool, there's proof enough in that!" -- Rostand, "Cyrano de Bergerac" -- 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: how t o read env variable in cygwin by Yitzchak Scott-Thoennes :: Rate this Message: Reply to Author \| View Threaded \| Show Only this Message On Mon, Mar 27, 2006 at 10:12:01AM -0500, Igor Peshansky wrote: > On Mon, 27 Mar 2006, Eric Blake wrote: > > > According to cyg_win_user on 3/27/2006 3:12 AM: > > > i m trying to read environment variable in perl using > > > > > > $OSTY = $ENV{OSTYPE}; > > > this will return os type as "linux" or "solaris". but when i try for > > > cygwin it returns empty string. is the some other syntax of way of > > > finding value of env variable in cygwin > > > > What shell are you using? OSTYPE is auto-set to "cygwin" by bash, but > > not by other shells (including if you are starting perl directly from > > cmd.com). Rather than reading an environment variable that is not > > standardized and might not be set, you could always use 'uname -s' > > instead. > > Or use Perl's builtin $^O variable, which should be auto-set to "cygwin" > (all lowercase). "man perlvar" for more info. All the possible values of $^O are listed in man perlport. -- 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/