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A.1.1.1 Using more than one Linux version of CASA

Up to CASA 3.3.0, CASA .rpm files prohibited installing more than one CASA release at a time. Starting with CASA 3.4.0, CASA .rpm files allow previously installed CASA releases to remain installed.

To start a specific CASA version, type

casapy --release <VERSION>

or

casapy -r <VERSION>

where ¡VERSION¿ is a placeholder for the CASA version to be invoked, e.g. 3.3.0.

Also, starting with CASA 3.4.0, the programs asdm2MS, casabrowser, casalogger, casaplotms, casapy, casapyinfo, and casaviewer all take the two new command line options: -r and --release. These options allow users to select a CASA program to run from the installed CASA releases.

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