Hi again! I've been looking around...
And one thing I don't get. You tell me that > SOMEVAR will be available to you in your program and any programs you spawn( with 'system' or backtics). But after your perl script ends, SOMEVAR is lost) and this seems to be correct when I test my program, but I get confused when I read about it on the net... http://www.devdaily.com/perl/edu/articles/pl020002/pl020002.shtml http://www.linux.com/howtos/Path-3.shtml If I like to set an environmentvariable permanently from my program? Isn't that possible in Perl? /G http://www.varupiraten.se/ > Hi gustav - > > At 2005-10-13, 23:42:22 you wrote: >>Hi! >> >>Just a quick question. Can I set or unset an enviromentvariable through >>this Hash? I just need a yes ... :-) >>If No, please give explanation... > > Not really. > > If you do something like: > > $ENV{SOMEVAR} = 'somevalue'; > > SOMEVAR will be available to you in your program and any programs you > spawn > ( with 'system' or backtics). But after your perl script ends, SOMEVAR is > lost. This is > because the system provides you with a new shell - with the envirnoment > inherited > from the caller - for the duration of the script; the evironment and its > modifications are > lost when the script ends. > > On 'nix, you can play with the 'source' operator: '.', which instructs the > shell to run the > command following the '.' operator in the same shell (I'm talking bash - > not sure about > other shells). >> >>/G >>http://www.varupiraten.se/ >> >> >> >>> Hi! >>> >>> Thanx a LOT!!! >>> >>> /G >>> http://www.varupiraten.se/ >>> >>> >>>> Hi Gustav - >>>> >>>> At 2005-10-13, 23:13:33 you wrote: >>>>>Hi there! >>>>> >>>>>I'd like to get a list of enviromentvariables from the *NIX-system. >>>>> >>>>>I'd like it in the format... >>>>>ENV1=x1 >>>>>ENv2=x2 >>>>>ENV3=x3 >>>>> >>>>>and so on... >>>>> >>>>>I think I have to use ENV-command. (http://perldoc.perl.org/Env.html) >>>>> Is >>>>>that right? I don't understand how I get this kind of listing. Please >>>>> put >>>>>me in right direction.. >>>>> >>>>> >>>>>I tried to use print ENV% but I get this kind of output: >>>>>HOSTfriggAUDIODEV/tmp/SUNWut/dev/utaudio/8dtstart_sessionlogfile/dev/nullDTSCREENSAVERLISTStartDtscreenBlankXMBINDDIR/usr/dt/lib/bindingsUTAUDIODEV/tmp/SUNWut/dev/utaudio/8AB_CARDCATALOG/usr/dt/share/answerbooks/C/ab_cardcatalogLC_ALLCDTLOGINDISPLAYCLASSSunRayOSTY >>>>> >>>>>I envy you how can solve this... :-) >>>>> >>>> >>>> You're almost there. %ENV is a hash, do you can do something like >>>> this: >>>> >>>> print "$_=$ENV{$_}\n" for sort keys %ENV; >>>> >>>> Or, with more keystrokes: >>>> >>>> for my $var( sort keys %ENV ) { >>>> print "$var=$ENV{$var}\n"; >>>> } >>>> >>>> Read up on hashes && good luck. >>>>>/G >>>> >>>> Aloha => Beau; >>>> [EMAIL PROTECTED] >>>> 2005-10-13 >>>> >>>> >>>> >>>> -- >>>> To unsubscribe, e-mail: [EMAIL PROTECTED] >>>> For additional commands, e-mail: [EMAIL PROTECTED] >>>> <http://learn.perl.org/> <http://learn.perl.org/first-response> >>>> >>>> >>>> >>> >>> >>> >> >> >> >>-- >>To unsubscribe, e-mail: [EMAIL PROTECTED] >>For additional commands, e-mail: [EMAIL PROTECTED] >><http://learn.perl.org/> <http://learn.perl.org/first-response> >> >> >> >> >>-- >>No virus found in this incoming message. >>Checked by AVG Anti-Virus. >>Version: 7.0.344 / Virus Database: 267.12.0/132 - Release Date: >> 10/13/2005 >> > > > > Aloha => Beau; > [EMAIL PROTECTED] > 2005-10-13 > > > -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
