[R & Unix ..] system("test",...) gives funny results...
Martin Maechler
Martin Maechler <maechler@stat.math.ethz.ch>
Thu, 10 Dec 1998 16:35:32 +0100
Peter Dalgaard provided the solution:
1) system(.) always uses /bin/sh -- not regarding $SHELL or anything
2) On Solaris 2.5.1, the /bin/sh builtin 'test' doesn't work as expected
as expected with "test -e file" :
sophie{maechler}654> uname -a
SunOS sophie 5.5.1 Generic_103640-08 sun4u sparc SUNW,Ultra-1
sophie{maechler}655> /bin/sh
$ test -e /tmp
test: argument expected
$ touch /tmp/q
$ test -e /tmp/q
test: argument expected
$ test -d /tmp; echo $?
0
$ test -d /Tmp; echo $?
1
[still interested to hear about the potential of an R builtin 'test',
relying on GNU sh-utils].
--
Martin
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