19 Apr
2017
19 Apr
'17
2:48 a.m.
I was trying to configure C news on 2.9BSD today and I found that its
Bourne shell doesn't grok # comments. The Bourne shell in 2.11BSD does.
So I thought: when did the Bourne (and other) shells first grok # as
indicating a comment? Was this in response to #! being added to the
kernel, or was it the other way around? And was the choice of #!
arbitrary, or was it borrowed from somewhere else?
Datum point: 2.9BSD's kernel can recognise #!, but the sh can't recognise #.
Cheers, Warren