you can use watch command directly like this
watch –interval=1 “ps aux|grep xinetd”
to watch xinetd at a 1 second interval.
or you can define a script like this,
vi /bin/wh
press i to enter insert mode. And write

watch –interval=1 $1

then write :wq to save file
change executable attribute with chmod 755 /bin/wh
use it like this

wh “ps uax|grep xinetd”

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