Safe wrapper for running external programs, reading stdout, and
sanitizing error messages.
- Parameters
- cmd
str or list or tuple Command to execute. Shell usage is disabled if a sequence is given.
Shell is used if a single command string is given.
- fatal
bool, optional Control whether command failure is fatal or not.
- msg
str Message to report on command failure.
- Returns
- output
str Entire program output is returned, not just a single line.
- Raises
- RuntimeError
If the command fails and fatal is True.