I am used a command as service --status-all  oot@frank-Jai:~#  service --status-all   [ ? ]  acpi-support  [ ? ]  acpid  [ ? ]  alsa-restore  [ ? ]  alsa-store  [ ? ]  anacron  [ + ]  apache2  [ + ]  apparmor  [ ? ]  apport  [ ? ]  avahi-cups-reload  [ ? ]  avahi-daemon  [ ? ]  binfmt-support  [ ? ]  bluetooth  [ - ]  bootlogd  [ - ]  brltty  [ ? ]  console-font  [ ? ]  console-setup  [ ? ]  cron  [ ? ]  cups  [ ? ]  cups-browsed  [ ? ]  dbus  [ ? ]  dmesg  [ ? ]  dns-clean  [ - ]  dnsmasq  [ ? ]  failsafe-x  [ ? ]  friendly-recovery  [ - ]  grub-common  [ - ]  hostapd  [ ? ]  hostname  [ ? ]  hwclock  [ ? ]  hwclock-save  [ ? ]  irqbalance  [ ? ]  kdm  [ - ]  kerneloops  [ ? ]  killprocs  [ ? ]  kmod  [ ? ]  lightdm  [ ? ]  modemmanager  [ ? ]  mysql  [ ? ]  network-interface  [ ? ]  network-interface-container  [ ? ]  network-interface-security  [ ? ]  network-manager  [ ? ]  networking  [ ? ]  networking.dpkg-new  [ ? ]  ondemand  [ ? ]  plymouth  [ ? ]  plymouth-log  [ ? ]  plymouth-ready  [ ? ]  plymouth-splash  [ ? ]  plymouth-stop  [ ? ]  plymouth-upstart-bridge  [ ? ]  powernap  [ ? ]  pppd-dns  [ ? ]  procps  [ ? ]  pulseaudio  [ ? ]  rc.local  [ ? ]  resolvconf  [ ? ]  rfkill-restore  [ ? ]  rfkill-store  [ - ]  rsync  [ ? ]  rsyslog  [ + ]  saned  [ ? ]  sendsigs  [ ? ]  setvtrgb  [ ? ]  speech-dispatcher  [ - ]  stop-bootlogd  [ - ]  stop-bootlogd-single  [ - ]  sudo  [ ? ]  udev  [ ? ]  udev-fallback-graphics  [ ? ]  udev-finish  [ ? ]  udevmonitor  [ ? ]  udevtrigger  [ ? ]  ufw  [ ? ]  umountfs  [ ? ]  umountnfs.sh  [ ? ]  umountroot  [ - ]  unattended-upgrades  [ - ]  urandom  [ ? ]  vboxautostart-service  [ ? ]  vboxballoonctrl-service  [ ? ]  vboxdrv  [ ? ]  vboxweb-service  [ + ]  vmware  [ ? ]  vmware-USBArbitrator  [ + ]  vmware-workstation-server  [ ? ]  whoopsie  [ - ]  x11-common root@frank-Jai:~#    what's they are exactly trying to convey from those ?,+,- ?
I really miss the graphical "Services" tool from older versions of Ubuntu, but I understand why it had to go. I always have terminals open anyway, so I use (because I have to now, I guess) service --status-all to see what services are running. This would be ok except that the command produces output like the following:   [ + ]  winbind  [ ? ]  wpa-ifupdown  [ - ]  x11-common   I'm guessing that those symbols mean something like listening, blocked, or stopped, but which is which? More importantly, why doesn't the man page say?
Suppose the mean noon-time temperature for September days in San Diego is 24∘ and the standard deviation is 4.9. (Temperature in this problem is measured in degrees celsius)  On September 26, 1963, the all-time record of noon-time temperature in San Diego of 44∘ was hit. Assume the temperature distribution is symmetric around the mean, what is the Chebyshev bound for the probability of breaking (or tieing) this record?  I am having a hard time understanding this. Could someone explain to me how to do this? Given that$(3x-1)^7=a_7x^7+a_6x^6+a_5x^5+...+a_1x+a_0$, find $a_7+a_6+a_5+a_4+...+a_1+a_0$ Given that$$(3x-1)^7=a_7x^7+a_6x^6+a_5x^5+...+a_1x+a_0$$find $$a_7+a_6+a_5+a_4+...+a_1+a_0$$  Is there anyway to do the question without using binomial theorem and expanding the expression on the LHS?? Trig sum: $\tan ^21^\circ+\tan ^22^\circ+\cdots+\tan^2 89^\circ = \text{?}$ As the title suggests, I'm trying to find the sum $$\tan^21^\circ+\tan^2 2^\circ+\cdots+\tan^2 89^\circ$$ I'm looking for a solution that doesn't involve complex numbers, or any other advanced branch in maths. The solution can involve techniques such as induction, telecoping, etc, but preferably only ideas from precalculus, e.g. trig identities, polynomials, etc.  EDIT: I know that the sum is a rational number. Hosting options for people that have Imgur blocked by their ISP When do the differences between APS-C and full frame sensors matter, and why? MBP 13' (mid-2010; 7,1) 2.4 Core 2 Duo P8600 supporting 16 GB RAM under Win7? I’ve got a MBP 13′ (mid-2010) 2.4 Core 2 Duo (full specs below) that I’m now operating solely under Win7 64Bit. It formerly run as well under OS X 10.6.8, relatively to which the firmware seems up to date (MBP71.0039.B0B).  Would my system recognize 16 GB RAM if operated under Win7 64 Bit? Or would it require the latest firmware (MBP71.0039.B0E) of OS-X 10.7.5 (which was never installed on my MBP) anyway?   As far as I have read elsewhere, using 16 GB RAM under OS X seems to definitely require this later version of OS X (including the respective firmware update); so I'd like to know whether this is an issue of OS X or (as I suspect) the firmware.    Modellname: MacBook Pro Modell-Identifizierung: MacBookPro7,1 Prozessortyp: Intel Core 2 Duo Prozessorgeschwindigkeit: 2,4 GHz Anzahl der Prozessoren: 1 Gesamtzahl der Kerne: 2 L2-Cache: 3 MB Speicher: 4 GB Busgeschwindigkeit: 1,07 GHz Boot-ROM-Version: MBP71.0039.B0B SMC-Version (System): 1.62f6 If Chrome is already open, it opens new sites (e.g. from Windows shortcuts, application shortcuts, or from the Run dialog) in new tabs of the existing instance.   I'd prefer to open new sites in a separate window (a new instance of Chrome).   I don't see that in the options - is it possible? I tried turn on in compizconfig but I does not work. Any solution or it is possible? I am sure there is something wrong i am doing but i just want someone to point it to me.  Why can't we say that $e^{\frac {\pi i}{3}} = \left(e^{\pi i}\right)^{\frac {1}{3}} = (-1)^{\frac {1}{3}} = -1$ Why do we have to calculate it by the formula as it is (which produces different value)  Another question is why can't we say that $ (-1)^{\frac {1}{2}} = \left(\left (-1\right)^{2}\right)^{\frac {1}{4}} = 1^{\frac {1}{4}} = 1$  Again i have to say that i know this is all wrong i just want to know why it is wrong Are the review queues planned for the iOS app? Why should edits be at least six non-space characters? Earlier today I got this message:  Oops! Your edit couldn't be submitted because:   Edits must be at least 6 non-space characters; is there something else to improve in this post?   However, the purpose of my edit was to change the formatting for a message to show code.  There may have been other grammatical mistakes that could have been, but in general it is possible that there would not be.  What's the correct protocol to handle a situation like this? Do I need to play previous Witchers before Witcher3 I'm thinking about buying The Witcher 3 and I know it's heavily based on a story/narrative.   For the story/narrative to make sense, do I need to play the previous 2 Witcher games - or are the stories for each title independent of one another? How many constructor arguments is too many? Let's say you have a class called Customer, which contains the following fields:   UserName Email First Name Last Name   Let's also say that according to your business logic, all Customer objects must have these four properties defined.  Now, we can do this pretty easily by forcing the constructor to specify each of these properties.  But it's pretty easy to see how this can spiral out of control when you are forced to add more required fields to the Customer object.    I've seen classes that take in 20+ arguments into their constructor and it's just a pain to use them.  But, alternatively, if you don't require these fields you run into the risk of having undefined information, or worse, object referencing errors if you rely on the calling code to specify these properties.  Are there any alternatives to this or do you you just have to decide whether X amount of constructor arguments is too many for you to live with? At some point in (I think) the 90s, I saw an episode of something like Outer Limits or Twilight Zone where nobody was allowed to have more than average intelligence. Smarter children had to wear headsets which inhibited them from being too intelligent, administering minor electric shocks if intellectual thought was detected.  I can remember a final (or near final) scene of somebody watching his suicide and being upset but not remembering why because of the headset.  Can anybody identify the show and episode? If Cooper wanted to stay, why did he send the NASA Coordinates? In Interstellar, after Cooper arrives in the Tesseract, Cooper tries to send the message STAY to his daughter in the past so she won't let him go on the mission. If that was his intention then why did he send the coordinates of NASA afterwards? If he didn't send the coordinates, he wouldn't have found NASA or go into space, he would have stayed. I am a US citizen and have recently visted the UK  with simply a passport which allowed me to vist for 6months I have heard rumors that I am obligated to stay in the US for a Equal amount of time that I have visited the UK before I am able to return, but I am struggling tour no any proof of this obligation .. Am I missing somthing or is it simply not true What color are Nissa, Worldwaker's lands? dual boot missing files on ntfs I have 3 partitions: one for Windows 7 (ntfs), one for Ubuntu (ext4) and one just for data (ntfs so both operating systems can see them).  My problem is that I had stored some files on the data partition using Ubuntu and when I booted Windows 7 all that data was gone! After that I couldn't find the files even when using Ubuntu.  My files were simply GONE :(  Is there something I can do in Ubuntu or is it just windows problem? Two Circles and Tangents from Their Centers Problem Let $\Gamma_1$ and $\Gamma_2$ be two non overlapping circles with centers $O_1$ and $O_2$ respectively. From $O_1$, draw the two tangents to $\Gamma_2$ and let them intersect $\Gamma_1$ at points $A$ and $B$. Similarly, from $O_2$, draw the two tangents to $\Gamma_1$ and let them intersect $\Gamma_2$ at points $C$ and $D$.  Prove that $AB=CD$.  I've done some extensive angle chasing on this but have been unable to make any real progress. Can't decide whether $ABCD$ is supposed to be rectangle (as in my diagrams), a parallelogram or even a trapezium. There is a homothety taking one circle to the other but as far as I can see this doesn't help as we don't have a clearly defined center to this.  Any help/hints would be greatly appreciated. What is the correct way to completely remove an application?