Setup < Main

Main Web>Computing>Setup (2013-04-25, WilliamSeligman) (raw view)
---+!! Nevis Local Software

These are commands developed or enhanced at Nevis for our own use. (Other sites, such as [[http://www.fnal.gov][Fermilab]], have defined their own versions of these commands, but apart from the name they have little in common.)

%TOC% 

---++ Initialization

In order to use these utilities, your UNIX environment must be set 
up properly. Normally, this is done for you when you login to the Nevis cluster for the first time.

If you suspect that there's something wrong with the initialization, you can check that the following line appears in
the file .profile file which resides in your home directory:
<pre>
source /usr/nevis/adm/nevis-init.sh
</pre>
If you use tcsh, then you should check that the following line
appears in your .cshrc file in your home directory:
<pre>
source /usr/nevis/adm/nevis-init.csh
</pre>
A simple way to look for this line is to type =less ~/.profile=
(if you use a Bourne-type shell, the default at Nevis) or =less ~/.cshrc= (if you use a C-type shell). If the
line is missing, then edit the file to include it. (I've set up a
separate [[shell][page on shells]] if you'd like to learn about about shells and start-up scripts.)

---++ =setup=

The =setup= command was written at Nevis. It's generally used to
modify the user's environment for software packages that are not part
of a standard Linux installation, and to allow the user some software
version control.

Here's an example. [[http://root.cern.ch/][ROOT]] is a
software package that is used by many physicists at Nevis.  To use the
"default" version of ROOT, you would type
<pre>
setup root
</pre>
If ROOT version 9.05/06 becomes available, you might type (perhaps)
<pre>
setup root9
</pre>
to use the newly-installed version.

To see a list of what software =setup= can control, and learn what the
"default" versions are, just type =setup=.  To keep track of
when new software programs or versions are available, check the  [[http://listserv.nevis.columbia.edu/pipermail/nevis-linux/][Nevis-linux]]
mailing list.

If you want to set up several programs at once, you can list them all in one command:
=setup root3 geant4 java=.

If you're having trouble with the =setup= command, especially if you're trying to use it in a batch job, check the [[LinuxFAQ][FAQ]]. 


---++ =unsetup=

The =unsetup= command is the inverse of the setup command. If you
are testing the new version of a program, and you decide that you
don't like it, you can remove it using =unsetup=. For example, if you're
testing ROOT 9.05/06 and you decide that it causes problems,
you would type 
<pre>
unsetup root
</pre>
to remove all references to ROOT from your system environment (or you
could type =setup root= to revert back to the default version).
Topic revision: r5 - 2013-04-25 - WilliamSeligman
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