# lsof /var
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
syslogd 350 root 5w VREG 222,5 0 440818 /var/adm/messages
syslogd 350 root 6w VREG 222,5 339098 6248 /var/log/syslog
cron 353 root cwd VDIR 222,5 512 254550 /var -- atjobs
# lsof -i -n -P | grep sendmail
sendmail 31649 root 4u IPv4 521738 TCP *:25 (LISTEN)