different about MacOS less and more

[gMan1990]

• uname -a
  Darwin *deMBP 17.2.0 Darwin Kernel Version 17.2.0: Fri Sep 29 18:27:05 PDT 2017; root:xnu-4570.20.62~3/RELEASE_X86_64 x86_64

• gsha1sum /usr/bin/more /usr/bin/less
  6f6ec068da5870eb28b04d0cc50abc5ec5e4b85e /usr/bin/more
  6f6ec068da5870eb28b04d0cc50abc5ec5e4b85e /usr/bin/less

• more --version
  less 487 (POSIX regular expressions)
  Copyright (C) 1984-2016 Mark Nudelman

  less comes with NO WARRANTY, to the extent permitted by law.
  For information about the terms of redistribution,
  see the file named README in the less distribution.
  Homepage: http://www.greenwoodsoftware.com/less

• Q: /usr/bin/more /usr/bin/less same file looks? but have different output:

  • more -n 3 long.txt
    look like linux more or linux pg
  • less -n 3 long.txt
    less file 3 and long.txt

[gwsw]

Less attempts to behave in a manner compatible with the POSIX "more" spec when it is invoked with the name "more". See the man page section "COMPATIBILITY WITH MORE" for details.