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A.1.1 Installation

You do not have to have root or sudo permission, you can easily install CASA, delete it, move it, and it works for many versions of Linux. The one caveat is that CASA on Linux currently will not run if the Security-Enhanced Linux option of the linux operating system is set to enforcing. For the non-root install to work. SElinux must be set to disabled or permissive (in /etc/selinux/config) or you must run (as root):

setsebool -P allow_execheap=1

Otherwise, you will encounter errors like:

casapy: error while loading shared libraries: /opt/casa/casapy-20.0.5653-001/lib/liblapack.so.3.1.1: cannot restore segment prot after reloc: Permission denied

The non-root installation is thought to work on a wide variety of linux platforms, see Sect. 1.2 for the latest supported OSs.

   A.1.1.1 Using more than one Linux version of CASA

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