Not sure this is what you are looking for but in re-reading your original email you mention

checking for pipes. The script I attached  in the earlier email was checking fd 0, so I also

tried checking fd 1.  The results are as follows looking at my /proc. 

zstat +link /proc/<pid>/fd/0 2>/dev/null
25189 12199 17227 pts/40  man
25198 25189 17227 pipe    man
25199 25189 17227 pipe    less
zstat +link /proc/<pid>/fd/1 2>/dev/null
25189 12199 17227 pts/40  man
25198 25189 17227 pipe    man
25199 25189 17227 pts/40  less

Not sure if it will return what you are looking for in your case. The script is also

collecting other info to output the above results.

Regards,

Jim