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  3. July 2016

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

I just tried that and no go. *shrug*

Tried it with and without the = sign like this as well:
ibmpaseforishell /QOpenSys/QIBM/ProdData/OPS/tools/bin/bash

As shown here:
http://www-01.ibm.com/support/docview.wss?uid=nas8N1011555

Searched IBM docs and it appears it should work... but no go. not sure
v7r3 makes a difference.

On Thu, Jul 7, 2016 at 8:07 AM, Aaron Bartell <aaronbartell@xxxxxxxxx>
wrote:

Note you can default to bash at the system level and I believe that should
get rid of the "is not an identifier" error. Add the following line to the
end of stream file /QOpenSys/QIBM/ProdData/SC1/OpenSSH/etc/sshd_config

ibmpaseforishell=/QOpenSys/QIBM/ProdData/OPS/tools/bin/bash

Then stop/start *SSHD server.

At this point either bash or zsh are your best bets for a shell. I use zsh
because the bash I obtained from perzl.org had issues with Node.js REPL
sessions going into some form of a race condition (consumed mass CPU in a
loop). I just tested the bash delivered by 5733OPS and it does NOT have
that issue (yahoo!).

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


On Thu, Jul 7, 2016 at 7:57 AM, Bradley Stone <bvstone@xxxxxxxxx> wrote:

Here's what I ended up with (and I'm using bitvise SSH client) for my
/QOpenSys/etc/profile file:

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

Also making sure just LFs, not CRLFs after each line.

I tried a few different things, like starting bash first, but then it
seems
like it didn't change the path.

The syntax used above I believe is because of the different BASH version?
Two steps instead of one.

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

I got the error:

-bsh:


PATH=/QOpenSys/QIBM/ProdData/OPS/Node4/bin:/QOpenSys/usr/bin:/usr/ccs/bin:/QOpenSys/usr/bin/X11:/usr/sbin:.:/usr/bin:
is not an identifier

At least it's to the point where I want it. I'll have to read up more on
bash, bsh, sh and all the different versions later.. right now it's not
on
my priority list. :)

Brad


On Wed, Jul 6, 2016 at 6:26 PM, Bradley Stone <bvstone@xxxxxxxxx> wrote:

Excellent information, Kevin. Thanks!

On Wed, Jul 6, 2016 at 5:47 PM, Kevin Adler <kadler@xxxxxxxxxx> wrote:

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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