Why “process substitution” is a late feature in Unix shells
Great read, but worth noting from the end of the article that "late feature" here means it was added in the early '90s. The late addition to Unix that surprises me is ssh. It was only invented in the late '90s. Before that everyone used unencrypted remote shells like telnet.Encryption in general was in a pretty bad state in the '90s: original http was unencrypted and early mobile phone standards that are still in use have very weak encryption.