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  3. July 2016

Re: [IBMiOSS] How to tell the system which version of Node to use

First run this command:

% which node | xargs ls -al
lrwxrwxrwx 1 qsys 0 74 Jun 3 16:04 /usr/bin/node ->
/QOpenSys/QIBM/ProdData/Node/bin/node

The "which" command gives us the path to the node binary, then I pipe that
result to the "ls" command so I can see where the symbolic link points to.
This is the key, that the symbolic link exists in the default PATH. You
could change the symbolic link by running a command like this:

ln -sf /QOpenSys/QIBM/ProdData/OPS/Node4/bin/node /usr/bin/node

The 'f' option is to force because one already exists.


With that said, IBM included a shell script named nodever.sh that does some
of this for you. You can check it out here:
http://bit.ly/developerWorks-node-v4

Does that clear it up a little?


Aaron Bartell
litmis.com - Services for open source on IBM i


On Wed, Jul 6, 2016 at 4:54 PM, Bradley Stone <bvstone@xxxxxxxxx> wrote:

Aaron, (or anyone else)

Can you (or anyone else) tell me then how my system is already set to use
the old version vs. the new version? It must be something in the current
path.

Somewhere the system has to be being told "use this version". I want to
tell it to use the new version. This should be something simple to do I
would hope without making a shell script.

I see in /usr/bin the node command (v0.12.13) as well as many others (ls,
curl, jar, etc) Can I replace any files in there to make it use the new
version instead of writing a script?

Sorry to be a pest, but this will be asked MANY times in the future, I'm
sure of it. :)

When I use

echo $PATH
I get:
/QOpenSys/usr/bin:/usr/ccs/bin:/QOpenSys/usr/bin/X11:/usr/sbin:.:/usr/bin

When I use

export PATH=/QOpenSys/QIBM/ProdData/OPS/Node4/bin:$PATH

And then node -v, it does claim to be using the new version. But... I want
to set it to use it system wide, not just for my particular session.

Am I asking the wrong question? :) I apologize if I am... but I would
hope this would be something simple, something documented by IBM (or the
OSS group).

IBM released Node4, I would hope there were some documentation on how to
set your system to use it besides needed to create a shell script. When
they release the next version, the path would be the same to use the new
version, or to be able to go back to the old version.

Brad

On Wed, Jul 6, 2016 at 4:28 PM, Aaron Bartell <aaronbartell@xxxxxxxxx>
wrote:

I use shell scripts to set the environment before starting my app. For
example:

---start.sh---
export PATH=/QOpenSys/QIBM/ProdData/OPS/Node4/bin:$PATH
PORT=80 node app.js

And then put it in a SBMJOB..

SBMJOB JOB(QSH CMD('/path/to/start.sh'))


Aaron Bartell
litmis.com - Services for open source on IBM i


On Wed, Jul 6, 2016 at 4:23 PM, Bradley Stone <bvstone@xxxxxxxxx> wrote:

Yep, it shows v0.12.13. I know node4 is installed. I also know how to
check the version.

So, again I ask, how do I tell my applications (or my system if that's
the
right terminology) to use the new version?

On Wed, Jul 6, 2016 at 3:43 PM, Aaron Bartell <aaronbartell@xxxxxxxxx>
wrote:

Before you start your app you can run:

node -v

From within your app you could try this:
http://bit.ly/determine-nodejs-version

Aaron Bartell
litmis.com - Services for open source on IBM i


On Wed, Jul 6, 2016 at 3:38 PM, Bradley Stone <bvstone@xxxxxxxxx>
wrote:

Any other changes to source needed besides that? How do I know if
I'm
using the new or old Node version with my application? (not just
the
DB2
adapter).

On Wed, Jul 6, 2016 at 3:31 PM, Aaron Bartell <
aaronbartell@xxxxxxxxx>
wrote:

That depends what you mean by "convert". Node4 uses ES6 which
has
a
number
of new features. With that said, the primary thing you need to
be
aware
of
is the changed path of the DB2 adapter. Going off of memory...

Node v0.12.x
var db =
require('/QOpenSys/QIBM/ProdData/Node/os400/db2i/lib/db2')

Node v4.x
var db =
require('/QOpenSys/QIBM/ProdData/OPS/Node4/os400/db2i/lib/db2')

Aaron Bartell
litmis.com - Services for open source on IBM i


On Wed, Jul 6, 2016 at 3:24 PM, Bradley Stone <bvstone@xxxxxxxxx

wrote:

Just looking through my system I see I have Node4 installed.

Is there a "simple" way to convert my apps done with the old
version
to
use
the new version?
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