ps bracket

Hi

/root>ps aux
cool 14788 0.0 0.0 4116 124 ? S 00:10 0:00
/bin/bash ./start
cool 14794 0.0 0.4 12128 1092 ? S 00:10 0:00 [hk1]
<---------------------- why this process has a bracket?
root 25076 92.9 0.7 12700 1832 pts/1 R< 11:04 0:33 ./Coo

thanks
from Peter (cmk128@xxxxxxxxxxx)

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