list of active currently running services 
svcs

list of all services
svcs -a

to restart a service
svcadm restart /network/ssh

#processes
equivalent of ps axf on solaris
ps -fade

#to see listening services
netstat -a

#to reboot system in 30 seconds
shutdown -i 6 -g 30

#to ping something
ping -vs media.ootboot.com

#to creat svcs manifest
svccfg export /network/httpd

then edit as you wish
svccfg import mymanifest.xml

#see failed services in admin mode
svcs -vx

#see description of a service
svcs -l /network/apache22

#see processes of a service
svc -p /network/apache22

#create new user - paths are specific to the environment
useradd -m -d /home/les -g webusers -G staff -s /usr/bin/bash les

#see memory
vmstat
kthr      memory            page            disk          faults      cpu
r b w   swap  free  re  mf pi po fr de sr s0 s1 s2 s3   in   sy   cs us sy id
3 0 0 41699024 1102068 119 2523 55 0 0 0 0 -0 -0 28 36 2650 431769 8742 40 17 43

I'm not actually sure how to read the output of vmstat

The other command is prstat
prstat -Z 1 1
   PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS/NLWP
 26285 webservd   23M   19M sleep   47    0   0:00:02 0.0% httpd/1
 27641 root     4116K 2684K cpu0    59    0   0:00:00 0.0% prstat/1
 10959 postgres   45M   38M sleep   59    0   0:41:02 0.0% postgres/1
 15121 root     4008K 1464K sleep   59    0   0:00:00 0.0% sshd/1
 26584 webservd   19M   16M sleep   59    0   0:00:00 0.0% httpd/1
 25804 root     8432K 4492K sleep   59    0   0:00:00 0.0% sshd/1
  3393 root        0K    0K sleep   60    -   0:00:00 0.0% zsched/1
 25881 admin    2940K 2224K sleep   59    0   0:00:00 0.0% bash/1
  3510 root     3664K 1776K sleep   59    0   0:00:07 0.0% syslogd/12
 26290 webservd   19M   16M sleep   52    0   0:00:00 0.0% httpd/1
 26287 webservd   19M   16M sleep    1    0   0:00:00 0.0% httpd/1
  3507 root     1940K 1196K sleep   59    0   0:00:03 0.0% sac/1
 26582 webservd   19M   16M sleep   57    0   0:00:00 0.0% httpd/1
  3505 root     2688K 1208K sleep   59    0   0:00:55 0.0% cron/1
 26286 webservd   23M   19M sleep   59    0   0:00:01 0.0% httpd/1
ZONEID    NPROC  SWAP   RSS MEMORY      TIME  CPU ZONE
    66       38  238M  223M   1.4%   1:28:56 0.0% z13851AA
Total: 38 processes, 109 lwps, load averages: 8.22, 6.44, 6.41