shell_command/1

Availability::- use_module(library(shell)).(can be autoloaded)

shell_command(-Shell:atom)

True when Shell is the preferred executable for running an interactive shell. Used by shell/0. The following options are tried to find a suitable shell command:

The Prolog flag shell
The environment variable %comspec% (Windows only)
The environment variable $SHELL
The Prolog flag posix_shell

Errors: existence_error(config, shell) if no suitable shell can be found.

History

Introduced in 10.1.14 (👉cc7e301) shell_command/1: find the preferred interactive shell executable.