topic Re: PATH in X command Linux in Administration and Deployment

PATH in X command Linux

bheinsius — Thu, 01 Feb 2018 17:03:34 GMT

Hi,

When I login to Linux i see this PATH:

[EUROPE\bart.heinsius-b@zew-v-0a2f0b04 ~]$ echo $PATH

/apps/sas/thirdparty/pm/9.1/bin:/apps/sas/thirdparty/pm/9.1/linux2.6-glibc2.3-x86_64/bin:/apps/sas/thirdparty/lsf/9.1/linux2.6-glibc2.3-x86_64/etc:/apps/sas/thirdparty/lsf/9.1/linux2.6-glibc2.3-x86_64/bin:/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/bin:/usr/bin:/home/bart.heinsius-b/bin

[EUROPE\bart.heinsius-b@zew-v-0a2f0b04 ~]$

When I submit x 'echo $PATH > /tmp/path.txt' from a SAS session running as me I see this PATH:

[EUROPE\bart.heinsius-b@zew-v-0a2f0b04 ~]$ cat /tmp/path.txt

/oracle/oracle-client/11.2.0.3/client/bin:/oracle/oracle-client/11.2.0.3/client/bin:/usr/bin:/bin

[EUROPE\bart.heinsius-b@zew-v-0a2f0b04 ~]$

Why are they different?

Regards,

Bart

Re: PATH in X command Linux

alexal — Thu, 01 Feb 2018 17:09:19 GMT

@bheinsius,

It appears that you have you changed PATH in /<SASHome>/SASFoundation/9.4/bin/sasenv_local

Re: PATH in X command Linux

Kurt_Bremser — Thu, 01 Feb 2018 17:09:25 GMT

A SAS session started by the spawner (ie all workspace servers used by EG or SAS Studio) inherits its environment from the spawner; this is usually that of the SAS install user.

Re: PATH in X command Linux

nhvdwalt — Fri, 02 Feb 2018 06:00:54 GMT

Do you modify $PATH in any way in <<SASHOME>>/SASFoundation/9.4/binsasenv_local ?

Re: PATH in X command Linux

bheinsius — Fri, 02 Feb 2018 14:11:49 GMT

My Object Spawner runs as sasinst.

This is sasinst's path:

[sasinst@zew-v-0a2f0b04 bin]$ echo $PATH

[sasinst@zew-v-0a2f0b04 bin]$

setenv_local contains these lines:

PATH=$ORACLE_HOME/bin:$PATH

export PATH

I don't see any other files in <SASHome>/SASFoundation/9.4/bin that modify the PATH:

[sasinst@zew-v-0a2f0b04 bin]$ grep PATH /apps/sas/SASHome/SASFoundation/9.4/bin/* | grep -v LIBRARY_PATH | grep -v SASCFGPATH

/apps/sas/SASHome/SASFoundation/9.4/bin/sasenv_local:PATH=$ORACLE_HOME/bin:$PATH

/apps/sas/SASHome/SASFoundation/9.4/bin/sasenv_local:export PATH

/apps/sas/SASHome/SASFoundation/9.4/bin/sasenv_local.backup.20160216:PATH=$ORACLE_HOME/bin:$PATH

/apps/sas/SASHome/SASFoundation/9.4/bin/sasenv_local.backup.20160216:export PATH

[sasinst@zew-v-0a2f0b04 bin]$

Re: PATH in X command Linux

alexal — Fri, 02 Feb 2018 14:19:40 GMT

@bheinsius,

This is sasinst's path:
[sasinst@zew-v-0a2f0b04 bin]$ echo $PATH

Where were those variables defined? Profile or bashrc? Personal or global? How exactly you start the object spawner? From interactive or non-interactive shell?

For me, it seems like you have defined those variables in your personal profile but starting the object spawner in a non-interactive shell.

Re: PATH in X command Linux

Kurt_Bremser — Fri, 02 Feb 2018 14:28:01 GMT

In my case (SAS 9.4 TS1M2 on AIX 7), the PATH retrieved by

filename oscmd pipe "echo $PATH";
data _null_;
infile oscmd;
input;
put _infile_;
run;

in a workspace server session from EG is exactly the same as in the SAS install user's .profile and the same that I get when I do a su - to the SAS install user.

Re: PATH in X command Linux

bheinsius — Wed, 07 Feb 2018 09:42:24 GMT

Thanks for your answers and suggestions.

I solved it but i don't know why.

I added /usr/local/bin to the PATH setting in /home/sasinst/.bash_profile and restarted the spawner, to see if this would be picked up in the X command shell.

To my surprise I saw that not only /usr/local/bin was added to the path, but the complete path was now available in the X command shell, identical to the path I get in a regular bash shell.

I then removed /usr/local/bin from the PATH setting again and the correct path - now without /usr/local/bin - was still there.

It seems not to be caused by restarting the spawner because we do that every morning. Maybe an incorrect CRLF somewhere that got removed after my editing?

Like we say in Dutch: vraag niet hoe het kan maar profiteer ervan! (Don't ask why just take advantage of it).

Re: PATH in X command Linux

bheinsius — Fri, 16 Feb 2018 09:44:09 GMT

I found the actual reason for this problem.

The SAS environment on this machine is restarted every morning using a cron scheduled task using something like this:

/apps/sas/SASConfig/Lev5/sas.servers stop && /apps/sas/SASConfig/Lev5/sas.servers start

At https://unix.stackexchange.com/questions/27289/how-can-i-run-a-cron-command-with-existing-environmental-variables I read this:

Cron knows nothing about your shell; it is started by the system, so it has a minimal environment.

Changing the cron command to (something like) this fixed the problem:

/bin/bash -l -c '/apps/sas/SASConfig/Lev5/sas.servers stop && /apps/sas/SASConfig/Lev5/sas.servers start'

the -l (lowercase L) makes bash act as if it had been invoked as a login shell and results in the Object Spawner being started with the full sasinst path.