Introduction

PSDM uses Subversion (SVN) for the code management and versioning task. Currently, official LCLS code such as PSANA, PYANA, etc. is located in the Software Repository which is enabled to LCLS software development team only. For those users who would like to develop their own code, contribute to the LCLS project, and share their code with other user groups, there is a users' software repository,

https://pswww.slac.stanford.edu/svn/userrepo   (this IS NOT a web reference, it is to be used with various "svn" commands)

In the psana environment, this address is assigned to environment variable SIT_SVN_USER.

Creating Your Own User Repository

Use the following command to create your own package:

psvn -u newpkg <my-new-package-name>

The package name should not include the "<>" above.  Once you have created your package you can check it out of the repository with:

 svn co https://pswww.slac.stanford.edu/svn/userrepo/<my-new-package-name>/trunk <my-new-package-name>

The above would work on machines around the world if you have a SLAC "kerberos ticket".  You can see your tickets with the command "klist". You can get at ticket on systems with a "kinit" command like this:

kinit mySlacAccountName@SLAC.STANFORD.EDU  (the CAPS are required for SLAC.STANFORD.EDU!)

If you don't have a kerberos ticket, you can get readonly access to the repository (anywhere in the world!) like this:

svn co https://pswww.slac.stanford.edu/svn-readonly/userrepo/<my-new-package-name>/trunk <my-new-package-name>

If you are working in a psana "test release" instead of the above, you can checkout your code with:

addpkg -u <my-new-package-name>

svn commit -m "my message describing changes"