topic Re: how should i remove/delete environments in Operating System - HP-UX

how should i remove/delete environments

rustam_2 — Fri, 12 Feb 2010 04:15:45 GMT

Hi all,
I have environments which were set through CLI
$export .....

I havent configured .bash_profile file, my environments just for this session for now.
Now i need to remove/delete one of the environments. there is not man for export, i couldnt find in other manuals syntax of export.

Would you explain, how can i remove/delete environments with CLI.

Regards,
rustam

Re: how should i remove/delete environments

Patrick Wallek — Fri, 12 Feb 2010 04:25:05 GMT

Use the command 'unset'.

For example:

$ export ME=you
$ echo $ME
you
$ unset ME
$ echo $ME

$

Re: how should i remove/delete environments

rustam_2 — Fri, 12 Feb 2010 04:32:42 GMT

Thanks, Patrick
i could delete. and now i know this useful command. by the way, i have these environments:
ORACLE_HOME="/u01/app/oracle/product/10.2.0/db_1"
ORACLE_SID="test"

when i typed
$echo ORACLE_HOME
i got
ORACLE_HOME
but not value of ORACLE_HOME

the same with ORACLE_SID
$echo ORACLE_SID
ORACLE_SID

is it wrong?

Re: how should i remove/delete environments

Kapil Jha — Fri, 12 Feb 2010 04:35:12 GMT

are you checking these from oracle user, these variables set for oracle user to startup oracle.

BR,
Kapil+

Re: how should i remove/delete environments

Patrick Wallek — Fri, 12 Feb 2010 04:39:05 GMT

When you echo an environment variable you must preface it with the $ symbol. Notice my examples above.

echo $ME

or

echo ${ME}

The export and unset command do NOT require the $ though.

The bash man page contains information on the export and unset commands (or more accurately shell built-ins).

Re: how should i remove/delete environments

Steven Schweda — Fri, 12 Feb 2010 04:39:57 GMT

> [...] there is not man for export, [...]

man

Look for "parameter" and/or "variable".

> when i typed
> $echo ORACLE_HOME
> i got
> ORACLE_HOME
> but not value of ORACLE_HOME

man

Look for "parameter" and/or "variable".

In the mean time, ...

echo $ORACLE_HOME

Re: how should i remove/delete environments

Johnson Punniyalingam — Fri, 12 Feb 2010 04:46:56 GMT

you have missed " $ " $$-> my 2 cents

# export TERM=vt100
# echo $TERM

http://www.injunea.demon.co.uk/pages/page207.htm

Re: how should i remove/delete environments

rustam_2 — Wed, 17 Feb 2010 10:36:50 GMT

Thanks for all.
I could and read a lot about environments. Later i will come back this thread to discussing about .profile for static environments.

Regards,
Rustam

Re: how should i remove/delete environments

Steven Schweda — Wed, 17 Feb 2010 14:38:54 GMT

> [...] Later i will come back this thread
> to discussing about .profile for static
> environments.

If you have a different topic, why not start
a different thread? The cost is low.

Re: how should i remove/delete environments

Steven E. Protter — Wed, 17 Feb 2010 16:39:29 GMT

Shalom rustam,

There are a lot of scripts to help manage environments, posted to various ITRC threads.

There are helpful tools that can assist the learning process and possibly resolve your issue.

Example thread with good stuff:
http://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=178514

SEP

Re: how should i remove/delete environments

rustam_2 — Fri, 19 Feb 2010 05:42:02 GMT

Hi Steven and SEP.
1. Thanks, Steven. Yeah, i will open new thread soon and will disscuss about it.
2. Thanks, SEP. Great thread, hope to find many useful scripts for myself.

Regards,
Rustam