# ps -aux | grep tail
root   19775  0.1  0.2  968  656 pts/3    S 17:07:27  0:00 grep tail
root    3030  0.0  0.2 1008  696 pts/4    S 10:23:21  0:00 tail -f /var/adm/dd

# ps -aux | grep 't\ail'
root    3030  0.0  0.2 1008  696 pts/4    S 10:23:21  0:00 tail -f /var/adm/dd