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

Now, I don't see a .profile file under /home/<userid>. I assume I can
create one.

Yes. If the file doesn't exist, it is not used.

I also don't see /QOpenSys/etc/profile either. Is that just a file

without

an extension one could create? Or should it be /QOpenSys/etc/.profile

that

we would create?

The files are /QOpenSys/etc/profile and ~/.profile. You could try creating
/QOpenSys/etc/.profile, but it wouldn't do you much good. The dot prefix
on the file is a convention on UNIX that indicates the file is "hidden".

eg.

kadler@kadler:~/t$ touch a b .c
kadler@kadler:~/t$ mv c .c
kadler@kadler:~/t$ ls -l
total 0
-rw-r--r-- 1 kadler kadler 0 Jul 6 17:34 a
-rw-r--r-- 1 kadler kadler 0 Jul 6 17:34 b
kadler@kadler:~/t$ ls -al
total 16
drwxr-xr-x 2 kadler kadler 4096 Jul 6 17:34 .
drwxr-xr-x 86 kadler kadler 12288 Jul 6 17:34 ..
-rw-r--r-- 1 kadler kadler 0 Jul 6 17:34 a
-rw-r--r-- 1 kadler kadler 0 Jul 6 17:34 b
-rw-r--r-- 1 kadler kadler 0 Jul 6 17:34 .c

Most people don't want to "pollute" their home directory with
configuration files/directories all the time, so they are prefixed with a
dot to hide them. The /etc (/QOpenSys/etc in PASE) directory is a
completely separate directory used to store configuration files so they
are not hidden there. Interestingly enough, the convention on Linux is
changing to put configuration files/directories under a ~/.config
directory so as to not pollute their home directories with tons of
"dotfiles." (It also makes it easy to backup 1 directory instead of tons
of configuration files and directories for each application).


Back to the main topic, each of these files is just a plain text file
(make sure it's in ASCII for the PASE shell to read) that can contain any
SHELL commands. Be aware that these scripts are read by the login shell
which be default is /QOpenSys/usr/bin/bsh and doesn't support some of the
newer features like being able to export on the same line as the
declaration. The /QOpenSys/etc/profile is read by all users and each user
can customize their own environment with their ~/.profile.

Other shells have their own configuration files/scripts as well eg. BASH
uses .bashrc. You can put shell-specific setup in these files.

On Wed, Jul 6, 2016 at 5:15 PM, Kevin Adler <kadler@xxxxxxxxxx> wrote:

PATH is kind of like your library list. By default, PASE uses

/QOpenSys/usr/bin:/usr/ccs/bin:/QOpenSys/usr/bin/X11:/usr/sbin:.:/usr/bin

as you noted.

Due to how the OPS stuff is shipped, we can't switch over Node 0.12 to
Node v4. Instead, we ship them under different subdirectories in

ProdData.

I *believe* that the node developers also created a /QOpenSys/usr/bin/
node4 symlink you can use instead of node if you want to ensure that

you

use Node v4.


If you want to set your PATH to be persistent. Just add a line to your
~/.profile:

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

and every time you start a PASE shell, your PATH will be set.

If you want to do it "system wide" you need to add the line to
/QOpenSys/etc/profile instead.


"OpenSource" <opensource-bounces@xxxxxxxxxxxx> wrote on 07/06/2016
04:54:40 PM:

From: Bradley Stone <bvstone@xxxxxxxxx>
To: IBMi Open Source Roundtable <opensource@xxxxxxxxxxxx>
Date: 07/06/2016 04:55 PM
Subject: Re: [IBMiOSS] How to tell the system which version of Node

to

use

Sent by: "OpenSource" <opensource-bounces@xxxxxxxxxxxx>

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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