covr: system_output – R documentation

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system_output

Run a system command and capture the output.

Description

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

Usage

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 `base::system()`

Value

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

covr

Test Coverage for Packages

v3.5.1

GPL-3

Authors

Jim Hester [aut, cre], Willem Ligtenberg [ctb], Kirill Müller [ctb], Henrik Bengtsson [ctb], Steve Peak [ctb], Kirill Sevastyanenko [ctb], Jon Clayden [ctb], Robert Flight [ctb], Eric Brown [ctb], Brodie Gaslam [ctb], Will Beasley [ctb], Robert Krzyzanowski [ctb], Markus Wamser [ctb], Karl Forner [ctb], Gergely Daróczi [ctb], Jouni Helske [ctb], Kun Ren [ctb], Jeroen Ooms [ctb], Ken Williams [ctb], Chris Campbell [ctb], David Hugh-Jones [ctb], Qin Wang [ctb], Ivan Sagalaev [ctb, cph] (highlight.js library), Mark Otto [ctb] (Bootstrap library), Jacob Thornton [ctb] (Bootstrap library), Bootstrap contributors [ctb] (Bootstrap library), Twitter, Inc [cph] (Bootstrap library)

Initial release