-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 According to Richard Neill on 7/22/2008 8:04 PM: | This prints "Match-1", but does not print "Match-2". | | The only way to get data out of the read-subshell is by something like | "exit 2", and looking at $?
You can also use files. The position within a seekable file is preserved from child to parent, but once you are using files, you might as well go with the file contents. | It's already possible to export a variable into the environment, and for | subshells to inherit variables from the main script. Do we need a new | keyword to achieve the reverse? Is there any way to make sure that | variables defined at [a] can be made to still exist at [b] ? A new keyword is insufficient. This is something that is fundamentally not provided by Unix systems - short of using the file system, there really isn't a way to pass arbitrary information from a child process back to the parent. But maybe the 'source' builtin is what you are looking for, to execute a script in the same context rather than forking off a child. - -- Don't work too hard, make some time for fun as well! Eric Blake [EMAIL PROTECTED] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Cygwin) Comment: Public key at home.comcast.net/~ericblake/eblake.gpg Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkiGmkYACgkQ84KuGfSFAYAFpQCeMsQjKYSjL6iQuzbwBO0muYDY QVYAoIxIozi5kQvkOSC0oBSUrJYRQcZJ =sZ1V -----END PGP SIGNATURE-----
