/bin/sh? If that's the case, it should continue to do the job in contemporary Ubuntu as long as you make use of a #!/bin/bash shebang, and stay clear of starting off scripts with sh scriptname (which ignores the shebang and forces use of sh as opposed to bash). There are https://marcokrugu.mpeblog.com/35848974/how-hbr-case-study-can-save-you-time-stress-and-money