R: Execute command with additional environments

run_command

R Documentation

Execute command with additional environments

Description

Enables 'conda' environment

Usage

cmd_create(command, shell, use_glue = TRUE)

cmd_set_env(command, key, value, quote = TRUE, quote_type = "cmd")

cmd_set_workdir(command, workdir)

cmd_set_conda(command, conda_path, env_path)

cmd_build(command, .env = parent.frame(), ...)

detect_shell(suggest = NULL)

run_command(
  command,
  shell = detect_shell(),
  use_glue = FALSE,
  enable_conda = TRUE,
  stdout = "",
  stderr = "",
  stdin = "",
  input = NULL,
  env_list = list(),
  wait = TRUE,
  timeout = 0,
  ...,
  workdir = getwd(),
  dry_run = FALSE,
  print_cmd = dry_run,
  glue_env = parent.frame()
)

Arguments

`command`	system command
`shell`	shell type
`use_glue`	whether to `glue` the command; default is false
`key, value`	environment variable key and value
`quote, quote_type`	whether to quote the environment variables and what quote type should use; see `shQuote`
`workdir`	the working directory
`conda_path`	'conda' path; default is `conda_path`
`env_path`	'conda' environment path; default is `env_path`
`suggest`	suggested shell type; default is `'cmd'` on windows, or `'bash'` on others
`enable_conda`	whether to activate 'conda'
`stdout, stderr, stdin, input, wait, timeout, ...`	passed to `system2`
`env_list`	a key-value pairs of environment variables
`dry_run`	whether to dry-run the command (do not execute, simply returns the command), useful to debug
`print_cmd`	whether to print the command out
`glue_env, .env`	the environment to evaluate variables when `use_glue` is true

Value

All the functions return a list with class rpymat_system_command except for run_command, which returns the exit code by system2.

Examples


run_command("conda install -y numpy", dry_run = TRUE)


a <- "This is a message"
run_command('echo "{a}"', dry_run = TRUE,
            enable_conda = FALSE, use_glue = TRUE)


## Not run: 

# Use `jupyter_launch()` instead. This is just a demonstration
run_command('"{jupyter_bin()}" server list', use_glue = TRUE)


## End(Not run)