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Operating Systems SCO Problem finding what is using a serial port Post 302728367 by jgt on Wednesday 7th of November 2012 05:27:38 PM
Old 11-07-2012
Try
Code:
/etc/fuser /dev/tty1a

The output is the pid of any processes using it.

Lock files would be in /usr/spool/uucp, but only if the program using the file is cu, uucp or login/getty
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Temporary(4)						     Kernel Interfaces Manual						      Temporary(4)

NAME
Temporary - Stores data files during transfers to remote systems SYNOPSIS
/usr/spool/uucp/SystemName/TM.xxPID.000 DESCRIPTION
The uucp Temporary (TM.*) files store data files during transfers to remote systems. After a Data (D.*) file is transferred to a remote system by the uucico daemon, the uucp program places it in a subdirectory of the uucp spooling directory named /usr/spool/uucp/SystemName, where the SystemName directory is named for the computer that is transmitting the file. The uucp program creates a temporary data file to hold the original data file. The full pathname of the temporary data file is in the following format: /usr/spool/uucp/SystemName/TM.xxPID.000 where the SystemName directory is named for the computer that is sending the file, and TM.xxPID.000 is the name of the file; for example, TM.00451.000. The PID variable is the process ID of the job. FILES
Describes accessible remote systems Contains uucp command, data, and execute files Contain data to be transferred. Contain files that uucp has transferred RELATED INFORMATION
Daemons: uucico(8) Commands: uucp(1), uudemon.cleanu(4), uupick(1), uuto(1), uux(1) delim off Temporary(4)
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