How do i obtain the version of azure shell using the az command?

[shoebill]

$ az --version
azure-cli                         2.0.77

command-modules-nspkg              2.0.3
core                              2.0.77
nspkg                              3.0.4
telemetry                          1.0.4

Python location '/opt/az/bin/python3'
Extensions directory '/home/training/.azure/cliextensions'

Python (Linux) 3.6.5 (default, Nov 22 2019, 05:32:22)
[GCC 5.4.0 20160609]

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