1
How far back does Linux's backwards compatibility extend?
1
How far back does Linux's backwards compatibility extend?
1
According to this, dc
is older than the C programming language.
This article indicates that roff
, which evolved into troff
dates back to about 1970 -- but it says it was added to Unix, implying that other programs already existed. It mentions the text editor, probably ed
.
One could argue that /bin/true
is a reimplementation of IEFBR
from IBM's OS/360.
Are you asking about source (API) compatibility or binary (ABI) compatibility?
– bwDraco – 2011-10-21T19:47:58.4071Hello World. -- – Hello71 – 2011-10-21T21:16:33.880