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Ulm's Modula-2 Library:
CallShell

NAME

CallShell - issue a shell command

SYNOPSIS

PROCEDURE Shell(string: ARRAY OF CHAR; VAR status: CARDINAL) : BOOLEAN;

DESCRIPTION

Shell causes the string to be given to sh(1) as input as if the string had been typed as a command at a terminal. The current process waits until the shell has completed, the status (see wait(2)) of the shell will be stored in status.

DIAGNOSTICS

Shell returns FALSE if sh(1) cannot be started.

FILES

/bin/sh

pathname of sh(1)

BUGS

The SHELL environment variable is not honored.

Because the environment variables are passed unchanged to sh(1) this interface is inherently insecure if the process runs with s-bit.

Edited by: borchert, last change: 1997/02/25, revision: 1.2, converted to HTML: 1997/04/28