[Sunhelp] patch level...

[Jang Bong-Seo]

hi

i wonder my os's patch level

my sunos says
#uname -a
SunOS smdl03 4.1.3_U1 1 sun4m

and at boot time 
SunOS Release 4.1.3_U1-KLE1.1.3_U1 (GENERIC_KOR)

how can i grep my os's patch level
i want to patch my os..

thank you..