FYI on IBM mainframes, MVS has included an integrated Unix environment since 1993 [0]. This continues to be developed and supplied with the latest versions of z

FYI on IBM mainframes, MVS has included an integrated Unix environment since 1993 [0]. This continues to be developed and supplied with the latest versions of z/OS :) Here's someone asking about doing just that: https://serverfault.com/questions/356574/can-i-run-grep-against-a-zos-dataset-via-unix-system-services https://serverfault.com/questions/356574/can-i-run-grep-agai... [0] https://en.wikipedia.org/wiki/MVS#MVS/XA https://en.wikipedia.org/wiki/MVS#MVS/XA (Edited to go back even further than OS/390)