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galaxy/tools/stats/r_wrapper.sh
T

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#!/bin/sh
### Run R providing the R script in $1 as standard input and passing
### the remaining arguments on the command line
# Function that writes a message to stderr and exits
fail()
{
echo "$@" >&2
exit 1
}
# Ensure R executable is found
which R > /dev/null || fail "'R' is required by this tool but was not found on path"
# Extract first argument
infile=$1; shift
# Ensure the file exists
test -f $infile || fail "R input file '$infile' does not exist"
# Invoke R passing file named by first argument to stdin
R --vanilla --slave $* < $infile