Sys.which {base} | R Documentation |
This is an interface to the system command which
.
Sys.which(names)
names |
Character vector of names of possible executables. |
The system command which
reports on the full names of an
executable (including an executable script) found on the current path.
An ‘executable’ has extension ".exe"
, ".com"
,
".cmd"
or ".bat"
. Such files need not actually be
executable, but this is what system
tries.
A character vector of the same length as names
, named by
names
. The elements are either the full path to the
executable/script or ""
if no executable of that name was
found.
The paths will be short paths (8+3 components, no spaces) with
\
as the path delimiter.
## the first two are likely to exist everywhere ## texi2dvi exists on most Unix-alikes and under MiKTeX Sys.which(c("ftp", "ping", "texi2dvi", "this-does-not-exist"))