Fixed argument-incompatibility of ps on MacOS
Fixed argument-incompatibility of ps on MacOS

Bounti/avatar-python,eurecom-s3/avatar-python,jmatthed/avatar-python,eurecom-s3/avatar-python,Bounti/avatar-python,eurecom-s3/avatar-python,Bounti/avatar-python,jmatthed/avatar-python,jmatthed/avatar-python