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Top Forums Shell Programming and Scripting Dynamically changing environment variable Post 302960094 by cjcox on Tuesday 10th of November 2015 02:47:31 PM
Old 11-10-2015
Linux, like most *ix doesn't pass the symlink data through something that can evaluate a variable expression.

I think OSX might support this though and I know that Apollo OS's did (and likely HP-UX still has some support for this). As a former Apollo user you could create a symlink with a variable as part of the link name. In fact, you could could point your entire /usr space to run off somebody else's machine by merely changing and environment variable. It was also how they allowed you to easily switch shell flavors.


It's not that Oracle didn't go totally brain dead on how they did things, it's just that they don't want to change to become more modern. Oracle "stuff" like this has been around since before most people on this forum were probably born.

Good question, but the problem isn't lack of features in the shell or OS, the problem is Oracle....
 

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Apache::Session::Store::Oracle(3pm)			User Contributed Perl Documentation		       Apache::Session::Store::Oracle(3pm)

NAME
Apache::Session::Store::Oracle - Store persistent data in a Oracle database SYNOPSIS
use Apache::Session::Store::Oracle; my $store = new Apache::Session::Store::Oracle; $store->insert($ref); $store->update($ref); $store->materialize($ref); $store->remove($ref); DESCRIPTION
Apache::Session::Store::Oracle fulfills the storage interface of Apache::Session. Session data is stored in a Oracle database. SCHEMA
To use this module, you will need at least these columns in a table called 'sessions': id varchar2(32) # or however long your session IDs are. a_session long To create this schema, you can execute this command using the sqlplus program: CREATE TABLE sessions ( id varchar2(32) not null primary key, a_session long ); If you use some other command, ensure that there is a unique index on the table's id column. CONFIGURATION
The module must know what datasource, username, and password to use when connecting to the database. These values can be set using the options hash (see Apache::Session documentation). The options are DataSource, UserName, and Password. Example: tie %hash, 'Apache::Session::Oracle', $id, { DataSource => 'dbi:Oracle:database', UserName => 'database_user', Password => 'K00l' }; Instead, you may pass in an already-opened DBI handle to your database. tie %hash, 'Apache::Session::Oracle', $id, { Handle => $dbh }; The last option is LongReadLen, which specifies the maximum size of the session object. If not supplied, the default maximum size is 8 KB. AUTHOR
This modules was written by Jeffrey William Baker <jwbaker@acm.org> A fix for the commit policy was contributed by Michael Schout <mschout@gkg.net> SEE ALSO
Apache::Session, Apache::Session::Store::DBI perl v5.10.1 2010-10-18 Apache::Session::Store::Oracle(3pm)
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