stty:Tcgetattr:Not a typewriter

[hy_4]

Os is Digital Unix 4.0D.There are lots of mails whose contents is "stty:Tcgetattr:Not a typewriter".What does it mean?Thank you.

[Johan Brusche · Accepted solution]

These messages are sent by the cron daemon and are the result of commands in the executed scripts that send output to or manipulate a terminal.

Since the cron environment has NO terminal defined, you get this error.
These are commands like stty, tset .....

The commands are not necessarily present in the script itself, but can also be present in the .login or .profile of the user that submitted the job to cron.
Also the presence of such commands in /etc/profile or /etc/csh.login will result in this error message.

Johan
~_~

[hy_4]

Thank you.I will check these files.