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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

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TCL programs via cronjob ?

Posted by xramm (xramm), 12 May 2008
I have a tcl program and want to run via cronjob , is is run by a Unix shell wrapper, it is like:
30 * * * * /aydin/check_sicaklik  2>& /tmp/ayd

inside the shell;
#!/bin/sh
rm -f /aydin/temp.log
/usr/bin/cat /aydin/cbm |while read site office
do
/aydin/check_temp $site $office
done

# cat /tmp/ayd
stty: impossible in this context
are you disconnected or in a batch, at, or cron script?stty: ioctl(user): Bad file number



Posted by admin (Graham Ellis), 13 May 2008
It looks like there is someting in your Tcl which is using ioctl calls for device control - but as you're not using a device in crontab, it's having problems.  The place to look is the Tcl code and not the bash script code you have supplied, so I can't give you any greater pointer with the information to hand.

Posted by xramm (xramm), 13 May 2008
Even though i tried to use stty (inside my tcl script) in full path;
/usr/bin/stty -echo it gave errors ; invalid command name "/usr/bin/stty" ??
So I decided to try your recommendation as I put  stty -echo line away and it worked now.

Thanks




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