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Full Discussion: stty tcgetattr errors
Top Forums UNIX for Dummies Questions & Answers stty tcgetattr errors Post 52731 by Perderabo on Thursday 24th of June 2004 11:17:19 AM
Old 06-24-2004
What usually causes a situation like this is a .profile file. People will load commands like:
stty intr ^c
or something into their .profile. And then Oracle people also put in stuff like
ORACLE_VARIABLE=something
export ORACLE_VARIABLE

Then they write a script that needs that oracle variable. So to make the script self-sufficient, they will run .profile with the dot command.

Then they run that script via cron and now there is no controlling terminal. The script runs .profile and .profile tries to run stty. Bingo.... you get that error message.

So check for that...
 

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STTY(3) 						   BSD Library Functions Manual 						   STTY(3)

NAME
stty, gtty -- set and get terminal state (defunct) LIBRARY
Compatibility Library (libcompat, -lcompat) SYNOPSIS
#include <sgtty.h> stty(int fd, struct sgttyb *buf); gtty(int fd, struct sgttyb *buf); DESCRIPTION
These interfaces are obsoleted by ioctl(2). They are available from the compatibility library, libcompat. The stty() function sets the state of the terminal associated with fd. The gtty() function retrieves the state of the terminal associated with fd. To set the state of a terminal the call must have write permission. The stty() call is actually 'ioctl(fd, TIOCSETP, buf)', while the gtty() call is 'ioctl(fd, TIOCGETP, buf)'. See ioctl(2) and tty(4) for an explanation. DIAGNOSTICS
If the call is successful 0 is returned, otherwise -1 is returned and the global variable errno contains the reason for the failure. SEE ALSO
ioctl(2), tty(4) HISTORY
The stty() and gtty() functions appeared in 4.2BSD. BSD
June 4, 1993 BSD
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