Path: utzoo!attcan!uunet!sco!rosso
From: rosso@sco.COM (Ross Oliver)
Newsgroups: comp.unix.xenix
Subject: Re: "#!" scripts, kernel patches, and Xenix
Message-ID: <858@viscous>
Date: 12 Sep 88 08:23:06 GMT
References: <161@tessera.UUCP>
Organization: SCO Technical Support
Lines: 15

In article <161@tessera.UUCP> jtc@tessera.UUCP (J.T. Conklin) writes:
>Has anyone patched the kernel exec routine to execute interpreter
>files ("#!" scripts)?

The exec() function executes binaries only.  If exec() fails (which
it does on a shell script), then it is up to your shell to decide
what to do.  The Bourne shell then executes "sh <file>"  The C shell
will look at the first line, and if it starts with "#!", csh executes
the script as "csh <file>", otherwise, it uses "sh <file>"  The
Bourne shell, of course, assumes everything that is not a binary is
a Bourne shell script.

Ross Oliver
SCO Technical Support
uunet!sco!rosso