[Cin] OT: cp -r vs cp -R recursive copy as backup

[Terje J. Hanssen]

 From my past Unix & alike experience with Cromix/SVR5/BSD and 
SunOS/Solaris, I seem to remember faintly that there was a difference 
between "cp -r" and "cp -R".
Both copied recursively directories and files, while -R (possibly) also 
followed symlinks and copied their targets.

On SUSE Linux (which first version 1993 is told to orginate from the 
most Unix like Slackware), the man pages for cp just say

    -R, -r, --recursive
                   copy directories recursively

A previous thread on Stack Exchange, "Difference between cp -r and cp -R 
(copy command)", mentions additionally POSIX defined and implementation 
dependency.
https://unix.stackexchange.com/questions/18712/difference-between-cp-r-and-cp-r-copy-command

So I am used with "cp -R" for complete directory backup purpose; else I 
use more effective "rsync" incremental backups to portable (USB) disks.
  .
What do you use and think here about this?


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