<div>
bira:<br />
<br />
I don't have a system handy at the moment to see if cu has any standard output. &nbsp;If so, maybe:<br />
<br />
test=`cu -l /dev/tty1 &gt;&nbsp;/dev/null 2&gt;&amp;1`<br />
<br />
If not, ignore my comment.<br />

</div>


bira:

I don't have a system handy at the moment to see if cu has any standard output.  If so, maybe:

test=`cu -l /dev/tty1 > /dev/null 2>&1`

If not, ignore my comment.


<div>
No comment has been added lately, so it's time to clean up this Topic Area.<br />
I will leave a recommendation for this question in the Cleanup topic area as follows:<br />
<br />
- Answered by bira<br />
<br />
Please leave any comments here within the next 7 days<br />
<br />
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !<br />
<br />
tfewster<br />
Cleanup Volunteer
</div>


No comment has been added lately, so it's time to clean up this Topic Area.
I will leave a recommendation for this question in the Cleanup topic area as follows:

- Answered by bira

Please leave any comments here within the next 7 days

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

tfewster
Cleanup Volunteer

<div>
per recommendation<br />
<br />
SpideyMod<br />
Community Support Moderator @Experts Exchange
</div>


per recommendation

SpideyMod
Community Support Moderator @Experts Exchange

<div>
<div class="content wysiwyg-content">
Hi,<br />
I need to test inside a shell script (UX10.20) is a modem is on/off. If it is off, I have to do some actions (Send an email...).<br />
That script will b excuted via cron, every minute. <br />
1. What is the command to check the modem on/off? (Is it cu -l /dev/... ? )<br />
&nbsp; &nbsp; How do I do it inside a script??<br />
2. If u can, provide me the full script. It has to do a very simple action:<br />
&nbsp; &nbsp;Check if the modem is active (On electricity...), if not send an email to some people.<br />
&nbsp; &nbsp;<br />
Many thanks, leee
</div>
</div>


Hi,
I need to test inside a shell script (UX10.20) is a modem is on/off. If it is off, I have to do some actions (Send an email...).
That script will b excuted via cron, every minute. 
1. What is the command to check the modem on/off? (Is it cu -l /dev/... ? )
    How do I do it inside a script??
2. If u can, provide me the full script. It has to do a very simple action:
   Check if the modem is active (On electricity...), if not send an email to some people.
   
Many thanks, leee

How to test if a modem is on/off inside a script?

Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.