I have Windows XP build scripts that look for R in a variety
of folders and if multiple ones are found, takes the last
one. For example, I currently have the following
in \Program Files\R :
rw1060
rw1062
rw1071
rw1071beta
rw1081
rw1090
rw1090dev
rw1091
rw1091pat
rw2000
rw2001beta
Note that it currently correctly gets rw2001beta but if I
add rw2001 then it will not pick it up since rw2001beta
would continue to sort after it.
I tried using dates in my scripts to pick out the right one
but realized that it was somewhat error prone and decided to
move back to ordering by the names.
I wonder if a naming convention could be adopted that ensured
that the names sort in order. For example,
rw2010a - alpha, i.e. development version (previously rw2010dev)
rw2010b - beta version (previously rw2001beta)
rw2010f - final version (previously rw2010)
rw2010p - patched version (previously rw2010pat)
Other possibilities might include an ascending numeric or date suffix.
I also thought about executing
bin\R --version
or
bin\Rcmd --version
in each rw folder but am not sure if this works in all versions and
if it does whether the output is always provides a comparable
format.
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