Add password to batch command? Post: 302254990

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Special Forums Windows & DOS: Issues & Discussions Add password to batch command? Post 302254990 by bakunin on Wednesday 5th of November 2008 04:41:19 PM

11-05-2008

Registered User

Well, the following is not really a "password" facility in the normal sense - but as far as i know the best you can get in pure DOS without resorting to Cygwin or the like:

1. switch off screen echo so nobody sees what is going on
2. load a commando processor with an input redirection to the keyboard
3. switch back on normal output.

Note that step 3 would only occur after leaving the loaded commando shell, so the "password" is fixed - to "exit[<enter>]". The following should work in real DOS-versions but probably not in WinXP DOS-boxes or the like:

Code:

@ctty nul
command.com < con:
@ctty con:
@echo off
echo here we are again

It has been a long time since i last used DOS and i am not sure if it is "con" or "con:", so you have to find that out. IIRC the colon was the sign of a character oriented device, so "con:" should be correct but it might well be the other way round and devices with colons are block-oriented.

I hope this helps.

bakunin

bakunin

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iob_new

iob_new(3)						     Library Functions Manual							iob_new(3)

NAME

       iob_new - create new I/O batch

SYNTAX

       #include <iob.h>

       io_batch* iob_new(int hint_entries);

DESCRIPTION

       iob_new	creates  a  new  I/O  batch with enough space allocated for hint_entries entries (buffers or files).  This is purely a performance
       hint, if you are unsure just pass 1.

       You can add buffers, strings and files to an I/O batch and then send it all at once using iob_send.

       The benefit of the I/O batch API is that it exploits platform specific APIs like FreeBSD's sendfile.  The file contents will always be sent
       in  a way that allows the operating systems to perform zero copy TCP, and the buffers will always be sent using as few syscalls as possible
       and avoiding unnecessary copying (using writev).

RETURN VALUE

       iob_new returns a pointer to an I/O batch data structure.  If there was a memory allocation error, it returns NULL instead.

SEE ALSO

       iob_reset(3), iob_send(3), iob_addbuf(3), iob_adds_free(3), iob_addfile(3)

																	iob_new(3)

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