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echo: cbm
to: 6502EN...@GMAIL.COM
from: DROPNINE
date: 2017-06-26 11:45:00
subject: Re: Using tcpser on a Pi

On Monday, June 26, 2017 at 9:32:58 AM UTC-6, 6502en...@gmail.com wrote:
> Thanks for your help!
> 
> Well, I did all 4 steps, but so far I get always the 0 and not the 1 when I
type: ps x |grep -v grep |grep -c "tcpser" ... Especially I made sure that I
set the startSerial file to execute with chmod +x ...
> 
> I would like to delete  the file in script with:
> ***************
> #!/bin/sh 
> 
> RESULT=`ps x |grep -v grep |grep -c "tcpser"` 
> 
> if [ $RESULT = 0 ]; then 
>     tcpser -s 2400 -d /dev/ttyUSB0 & 
> ***************
> because I have an empty first row above that - maybe here is the mistake? 
> 
> With what order can I delete the script?
> 
> ----------------


Hi. I would think that your CRON is not running or there is something up with
the timing job that was entered (That's just a guess).  *Make sure that your pi
is updated with sudo apt-get update and then sudo apt-get upgrade.

There's a couple of ways to get a picture of what's going on, the first thing
is to turn on the cron logging and then look at it's log with the command: less
/var/logs/cron.log and see what it is reporting.  And then go to correct the
spelling or 
whatever the cause is. Check the doc under "debugging the cron timer" to see
how to turn it on.

Another approach is to see if the script,itself, is working.  Manually issue
the script command with ./startSerial (if that's the name you called your
script).  Perhaps you never made the text file executable.

Finally, if the script is working, bypass it and manually type: tcpser -s 2400
-d /dev/ttyUSB0 &

at the bash and then issue a "ps -A" the tcpser should be in the list near the
bottom.  If it is, then issue the ps -x | grep -v grep |grep -c "tcpser"
command manually to see the result.  That should tell you if the tcpser command
is working, itself.

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