When the ! character appears as the first character in a line, it is treated as an escape to host operator.

This allows the execution of host system commands from within a Maple session. All characters on the line following the escape character are treated as a command to the host system.

The result is the return status of the command performed, which is operating system dependent, but usually 0 indicates success and any other value indicates failure.

Important: There may be implementation restrictions on some host operating systems.

!pwd;