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source irafuser.csh leads to undefined variable Unbuntu

 
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surfcast23
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Joined: 23 Jun 2011
Posts: 24
PostPosted: Thu Jun 23, 2011 8:01 pm    Post subject: source irafuser.csh leads to undefined variable Unbuntu Reply with quote
Hi all. I am new to unix as well as IRAF so please bear with me. I was following the directions for Unbuntu install found here

http://geco.phys.columbia.edu/~rubab/iraf/iraf_step_by_step_installation

everything was going fine until I got this step.

Code:
cd /iraf/iraf/unix/hlib

source irafuser.csh


I changed directories and typed

Code:
source irafuser.csh


which gave this error message

Code:
iraf: Undefined variable.


I tried typing the full path name after source and got the same message. I then tried
Code:
sudo /home/iraf/unix/hlib/irafuser.csh


and got a : command not found error. Can someone explain to me where I am going wrong.
thank you
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fitz
Site Admin


Joined: 30 Sep 2005
Posts: 3256
Location: Tucson
PostPosted: Thu Jun 23, 2011 8:08 pm    Post subject: Reply with quote
Try doing a

Code:
setenv iraf /iraf/iraf/


(trailing '/' is required) before the source command. To simply use iraf you don't need to do either of these steps, they are mostly needed for development or e.g. to build external packages. I think your 'sudo' command is failing because you used the /home/iraf path instead of /iraf/iraf
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surfcast23
Active IRAF User


Joined: 23 Jun 2011
Posts: 24
PostPosted: Thu Jun 23, 2011 8:24 pm    Post subject: Reply with quote
Fitz

I tried
Code:
 /source irafuser.csh
as well as

Code:
 ./source irafuser.csh


as well as what you suggested. When I did the setenv nothing happened at all, and I got the error messages when I retried source.

I am using /home/iraf/ because earlier in the install when I tried

Code:
sudo chown -R iraf:iraf /iraf


I got

Code:
chown: cannot access `/iraf': No such file or directory


but
Code:
 sudo chown -R iraf:iraf /home/iraf


worked
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surfcast23
Active IRAF User


Joined: 23 Jun 2011
Posts: 24
PostPosted: Thu Jun 23, 2011 8:27 pm    Post subject: Reply with quote
I just looked at the setting under users and groups, and it looks like I set /home/iraf as the iraf home directory.
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fitz
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Joined: 30 Sep 2005
Posts: 3256
Location: Tucson
PostPosted: Thu Jun 23, 2011 8:29 pm    Post subject: Reply with quote
If /home/iraf is where you actually unpacked the files then that is what you should use. 'source' is a C-shell command and is used to load the definitions in the irafuser.csh file, however this presumes that you are using a C-shell at the time and not a Bash shell. If this is the problem, type 'csh' before running the source/setenv commands.
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surfcast23
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Joined: 23 Jun 2011
Posts: 24
PostPosted: Thu Jun 23, 2011 8:35 pm    Post subject: Reply with quote
I will give it a try. How can one tell if it is a C-shell or Bash shell? Thanks
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fitz
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Joined: 30 Sep 2005
Posts: 3256
Location: Tucson
PostPosted: Thu Jun 23, 2011 8:39 pm    Post subject: Reply with quote
Try "echo $SHELL" Or, if you get lots of errors or a 'command not found' message from doing the 'source' then you're probably in a Bash shell.
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surfcast23
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Joined: 23 Jun 2011
Posts: 24
PostPosted: Thu Jun 23, 2011 8:45 pm    Post subject: Reply with quote
nothing seems to be happening. this is what I typed

Code:

ubuntu:~/unix/hlib> csh
ubuntu:~/unix/hlib> source irafuser.csh
ubuntu:~/unix/hlib>


then tried
Code:

ubuntu:~/unix/hlib> source /home/iraf/unix/hlib/irafuser.csh
ubuntu:~/unix/hlib>
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fitz
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Joined: 30 Sep 2005
Posts: 3256
Location: Tucson
PostPosted: Thu Jun 23, 2011 8:47 pm    Post subject: Reply with quote
That's all normal -- there is no output, all it does is define some environment variables. Like I said, its not needed for simply using the system by most users.
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surfcast23
Active IRAF User


Joined: 23 Jun 2011
Posts: 24
PostPosted: Thu Jun 23, 2011 8:49 pm    Post subject: Reply with quote
fitz wrote:
Try "echo $SHELL" Or, if you get lots of errors or a 'command not found' message from doing the 'source' then you're probably in a Bash shell.


I got

/bin/tcsh

which I now remember is what the instructions I am following said to set it as
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surfcast23
Active IRAF User


Joined: 23 Jun 2011
Posts: 24
PostPosted: Thu Jun 23, 2011 8:54 pm    Post subject: Reply with quote
fitz wrote:
That's all normal -- there is no output, all it does is define some environment variables. Like I said, its not needed for simply using the system by most users.


okay thank you.
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surfcast23
Active IRAF User


Joined: 23 Jun 2011
Posts: 24
PostPosted: Thu Jun 23, 2011 8:56 pm    Post subject: Reply with quote
It says that the script must be run as root for changes to take effect. To do that I just type

Code:
root ./install


correct?
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surfcast23
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Joined: 23 Jun 2011
Posts: 24
PostPosted: Thu Jun 23, 2011 9:00 pm    Post subject: Reply with quote
never mind remembered what to do
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