INST: put back the shell statement because it didn't work before
INST: put back the shell statement because it didn't work before

Former-commit-id: 49a4e884f55506d269e039f091a1c7402fbf7348 [formerly 2a276fceaecde2c9944b8e50d52586a87dbe6f0c]
Former-commit-id: 487c8d6e4c8bd974d20c0dcc1438d0b98465e8d6
Former-commit-id: 106446b51c1c59a7078c187acca9b92ca3e95090
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox