On 02/18/2018 08:42 AM, Robert P. J. Day wrote:
currently perusing some linux courseware i'll be delivering later
this month, and i'm fascinated by the early claim that the "more" and
"less" commands can be used interchangeably.
This does not apply.
"more" is the traditional UCB/Berkeley "more" command. It is covered by
POSIX and supposed to be portable across POSIX-compatible and *NIXish OS.
i don't recall that
*ever* being the case, given that more is part of util-linux, and less
is a separate package, and less has always had more functionality than
more.
"less" is a "feature-enhanced" "more". It supports the "more"-CLI
syntax, but has additional features added, which are not supported by
the traditional "more". Unlike "more", which likely is present on all
*NIX/POSIX-compliant OSes (even 20 years old ones), "less" is "optional"
or might not be present.
Ralf
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