> compile
Linux ubuntu 3.13.0-29-generic #53-Ubuntu SMP Wed Jun 4 21:00:20 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
 16:28:24 up  4:26,  3 users,  load average: 0.13, 0.16, 0.26
init-+-ModemManager---2*[{ModemManager}]
     |-NetworkManager---3*[{NetworkManager}]
     |-acpid
     |-avahi-daemon---avahi-daemon
     |-bluetoothd
     |-colord---2*[{colord}]
     |-cron
     |-cups-browsed
     |-cupsd
     |-2*[dbus-daemon]
     |-dbus-launch
     |-dhclient
     |-6*[getty]
     |-gnome-keyring-d---4*[{gnome-keyring-d}]
     |-hpfax
     |-kerneloops
     |-lightdm-+-Xorg
     |         |-lightdm-+-init-+-at-spi-bus-laun-+-dbus-daemon
     |         |         |      |                 `-3*[{at-spi-bus-laun}]
     |         |         |      |-at-spi2-registr---{at-spi2-registr}
     |         |         |      |-bamfdaemon---3*[{bamfdaemon}]
     |         |         |      |-bonobo-activati---2*[{bonobo-activati}]
     |         |         |      |-2*[dbus-daemon]
     |         |         |      |-dconf-service---2*[{dconf-service}]
     |         |         |      |-evolution-calen---4*[{evolution-calen}]
     |         |         |      |-evolution-sourc---2*[{evolution-sourc}]
     |         |         |      |-fcitx---{fcitx}
     |         |         |      |-fcitx-dbus-watc
     |         |         |      |-gconfd-2
     |         |         |      |-geoclue-master---2*[{geoclue-master}]
     |         |         |      |-gnome-session-+-compiz---4*[{compiz}]
     |         |         |      |               |-deja-dup-monito---2*[{deja-dup-monito}]
     |         |         |      |               |-nautilus---3*[{nautilus}]
     |         |         |      |               |-nm-applet---2*[{nm-applet}]
     |         |         |      |               |-polkit-gnome-au---3*[{polkit-gnome-au}]
     |         |         |      |               |-telepathy-indic---2*[{telepathy-indic}]
     |         |         |      |               |-unity-fallback----2*[{unity-fallback-}]
     |         |         |      |               |-update-notifier---3*[{update-notifier}]
     |         |         |      |               |-zeitgeist-datah---3*[{zeitgeist-datah}]
     |         |         |      |               `-3*[{gnome-session}]
     |         |         |      |-gnome-terminal-+-bash---make---sh-+-git
     |         |         |      |                |                  `-pstree
     |         |         |      |                |-bash---vim
     |         |         |      |                |-gnome-pty-helpe
     |         |         |      |                `-3*[{gnome-terminal}]
     |         |         |      |-gvfs-afc-volume---2*[{gvfs-afc-volume}]
     |         |         |      |-gvfs-gphoto2-vo---{gvfs-gphoto2-vo}
     |         |         |      |-gvfs-mtp-volume---{gvfs-mtp-volume}
     |         |         |      |-gvfs-udisks2-vo---2*[{gvfs-udisks2-vo}]
     |         |         |      |-gvfsd---{gvfsd}
     |         |         |      |-gvfsd-burn---2*[{gvfsd-burn}]
     |         |         |      |-gvfsd-fuse---4*[{gvfsd-fuse}]
     |         |         |      |-gvfsd-http---3*[{gvfsd-http}]
     |         |         |      |-gvfsd-metadata---{gvfsd-metadata}
     |         |         |      |-gvfsd-trash---6*[{gvfsd-trash}]
     |         |         |      |-hud-service---3*[{hud-service}]
     |         |         |      |-indicator-appli---{indicator-appli}
     |         |         |      |-indicator-bluet---2*[{indicator-bluet}]
     |         |         |      |-indicator-datet---5*[{indicator-datet}]
     |         |         |      |-indicator-keybo---3*[{indicator-keybo}]
     |         |         |      |-indicator-messa---3*[{indicator-messa}]
     |         |         |      |-indicator-power---2*[{indicator-power}]
     |         |         |      |-indicator-print---2*[{indicator-print}]
     |         |         |      |-indicator-sessi---2*[{indicator-sessi}]
     |         |         |      |-indicator-sound---3*[{indicator-sound}]
     |         |         |      |-mission-control---2*[{mission-control}]
     |         |         |      |-notify-osd---2*[{notify-osd}]
     |         |         |      |-pulseaudio---2*[{pulseaudio}]
     |         |         |      |-sogou-qimpanel---7*[{sogou-qimpanel}]
     |         |         |      |-ssh-agent
     |         |         |      |-ubuntu-geoip-pr---2*[{ubuntu-geoip-pr}]
     |         |         |      |-unity-panel-ser---2*[{unity-panel-ser}]
     |         |         |      |-unity-settings----4*[{unity-settings-}]
     |         |         |      |-unity-webapps-s---2*[{unity-webapps-s}]
     |         |         |      |-2*[upstart-dbus-br]
     |         |         |      |-upstart-event-b
     |         |         |      |-upstart-file-br
     |         |         |      |-2*[vim]
     |         |         |      |-vmtoolsd---{vmtoolsd}
     |         |         |      |-window-stack-br
     |         |         |      |-zeitgeist-daemo---{zeitgeist-daemo}
     |         |         |      `-zeitgeist-fts-+-cat
     |         |         |                      `-2*[{zeitgeist-fts}]
     |         |         `-{lightdm}
     |         `-2*[{lightdm}]
     |-miredo---miredo-+-miredo-privproc
     |                 `-5*[{miredo}]
     |-polkitd---2*[{polkitd}]
     |-rsyslogd---3*[{rsyslogd}]
     |-rtkit-daemon---2*[{rtkit-daemon}]
     |-systemd-logind
     |-systemd-udevd
     |-tpvmlp
     |-udisksd---4*[{udisksd}]
     |-upowerd---2*[{upowerd}]
     |-upstart-file-br
     |-upstart-socket-
     |-upstart-udev-br
     |-vmtoolsd---{vmtoolsd}
     |-vmware-vmblock----2*[{vmware-vmblock-}]
     |-whoopsie---2*[{whoopsie}]
     `-wpa_supplicant
Fix about parenthese in achiving expression