ways to do pstree

Linux

ps auxf

or, if you have grc [2] installed, see it in full color: grc --colour=on ps auxf | less -rF

pstree -alp

pstree -lpu (-u shows usernames, in parentheses, only on UID transitions; however, the command-line args aren't shown, unfortunately username and the command-line can't both be shown at the same time)

ps -ejH

Solaris

HPUX

pstree — for only one user

Linux

ps ufU $USER

pstree -alp $USER

Solaris

ptree -a $USER | perl -nae 'printf "%-8s %s", (getpwuid((stat "/proc/$F[0]")[4]))[0], $_'

AIX

ps -fT1 | perl -nle 'BEGIN{$user=shift} s/(?=.{'$COLUMNS'}).*//; $cur = /^ *$user/; print if $cur; print "\n" if $last && !$cur; $last=$cur' $USER