Run a system command and capture the output.

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Description

This function automatically quotes both the command and each argument so they are properly protected from shell expansion.

Usage

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system_output(cmd, args = character(), env = character(), quiet = FALSE,
  echo = FALSE, ...)

Arguments

cmd

the command to run.

args

a vector of command arguments.

env

a named character vector of environment variables. Will be quoted

quiet

if TRUE, the command output will be echoed.

echo

if TRUE, the command to run will be echoed.

...

additional arguments passed to system

Value

command output if the command succeeds, an error will be thrown if the command fails.