Followup to: <01b701c6818d$4bcd37b0$1800a8c0@dcccs>
By author: =?iso-8859-2?Q?Haar_J=E1nos?= <[email protected]>
In newsgroup: linux.dev.kernel
>
> Hello, list,
>
> I wish to know, how to send a "BREAK" to trigger the sysreq functions on the
> serial line, using echo.
>
> I mean like this:
>
> #!/bin/bash
> echo "?BREAK?" >/dev/ttyS0
> sleep 2
> echo "m" >/dev/ttyS0
>
You can't use it using echo, however, you can do it using Perl:
perl -e 'use POSIX; tcsendbreak(1,0);' > /dev/ttyS0
-hpa
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