File: system.doc

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\DOC system

\TYPE {system : (string -> int)}

\SYNOPSIS
Executes a shell command.

\DESCRIBE
Escapes from {HOL} temporarily to execute a named shell command. The integer
value returned is an error code: zero indicates successful completion of the
shell command.

\EXAMPLE
{
#system `zap`;;
zap: Command not found.
1 : int

system `ls`;;
file_a              file_b             file_c
0:int
}
\ENDDOC