Filename in sftp log file is getting truncated while running through AutoSys

Products

• CA Workload Automation AE - Business Agents (AutoSys)
• CA Workload Automation AE - System Agent (AutoSys)
• CA Workload Automation AE - Scheduler (AutoSys)
• CA Workload Automation Agent
• CA Workload Automation AE

Issue/Introduction

When executing a job thru Autosys that performs a sftp command, we noticed that the sftp submission log file name is getting truncated while running outside of Autosys it isn't.

Environment

Release : 11.4

Component : CA Workload Automation System Agent

Resolution

The terminal setting (like stty) will apply to the processes that are running with terminal inputs.
So, when the script is run from console, settings are acting and hence the output length is more and the file name hasn't truncated.

But when we run the script from the scheduler, it runs it via demon process of agent which is not connected to any terminal as it is expected to be non interactive. So the terminal settings are not applying and sftp is using the default length (80+1 - 36), which is falling short for the mentioned file and file name getting truncated.

I ran the sample script using a crontab and can see the same behavior.

In the sample script provided, I could see that we can apply a work around as below, which is helping in resolving the problem:

Instead of
    spawn sftp -oUserKnownHostsFile=/dev/null -ostricthostkeychecking=no [email protected]

we can run a script as below:
    spawn launchsftp.sh


launchsftp.sh file content:
    stty columns 186
    sftp -oUserKnownHostsFile=/dev/null -ostricthostkeychecking=no [email protected]