A client of mine is getting something we don't understand from the "sin fd" command.
It's the line next to the bottom [@0]

Does anyone remember what that means?

# sin fd
//11/home/ebox/rr 4440
0 -//11/dev/con4
1 -//11/dev/con4
2 -//11/dev/con4
3 -//11 (23)
4 -//11 (23)
5 -//11 (23)
6 -//11 (23)
7 -//11/dev/ser1
8 -//11/dev/ser2
9 -//11/dev/ser3
10 -//11/dev/ser4
11 -//11 T 0.0.0.0.8000 0.0.0.0.0 LISTEN
12 -//11/home/ebox/IOSService.bat
13 -//11 (23)
14 -//11 (23)
15 -//11 (23)
16 -//11 (23)
17 -//11 [@0]
18 -//11 T 10.10.60.101.3921 10.10.60.24.2490 ESTABLISHED