How is a program uninstalled in Ubuntu?   By internet search I know to go to System/Administrator/something. Where is this so-called "system" found? What is this "system"? System sounds important.  Is it possible to uninstall Ubuntu One and Ubuntu Music and have their icons removed from the Launcher?
I've searched the net for such information and found different command lines, like these ones:  sudo apt-get remove application sudo apt-get remove application*  sudo apt-get remove --purge application sudo apt-get remove --purge application*  sudo apt-get purge application sudo apt-get purge application*   So, what is the correct way? Is it necessary to use that "*"?  After that, I also found these commands:  sudo updatedb sudo locate application sudo rm -rf (file/folder name)
CSH - How to check if input is NOT number Need to apply it on csh.  to check if the inputted $2 is not number nor the word "all"  if ($#argv == 2 &amp;&amp; ($2 != all &amp;&amp; $2 != **any number**)) then    echo "wrong parameter" Rounding to nearest 100 First number needs to be rounded to nearest second number. There are many ways of doing this, but whats the best and shortest algorithm? Anyone up for a challenge :-)   1244->1200  1254->1300 123->100 178->200 1576->1600 1449->1400 123456->123500 654321->654300 23->00 83->100 Our DM keeps interrupting our long rests In the latest campaign, we're still around the third level, but every single night we've spend in the wild so far, we were interrupted by hard combat encounters (as in DMG-worded "hard"), forcing us to use our resources (like HP, spell slots, Ki, once-per-day stuff) and not restoring any of those lost the previous days. I feel like the , as it lasts four to six rounds, so we usually say that we'd like to resume our rest but the answer is always "you've been interrupted, your rest is over, you can't restart any until dusk". So the only real long rests we could have always were in town.  We've always used watch-turns, and being interrupted in the first night of the campaign, we now always spend one hour to find a safe place to rest and we make that intent very clear to the DM. But yet, kobolds, goblins, ghouls and gnolls always find us in the middle of the night, but never when we travel for ten hours during the day (which is comparable to "fast travel" in his own word). Once on the second day in the wild, we were faced to a deadly encounter (as in DMG-worded "deadly") which we survived only by fleeing. And we're kind of forced to get back to the deadly encounter, which is more than one day away from the nearest town.  We're five players and I'm the only one with PnP RPG experience... from ten years ago. I don't remember being this resourceless. We asked if it was a survival campaign and the answer was that it was only a normal introduction campaign found on the Internet that he spiced up a bit. We've also asked if we did anything wrong and the answer was that we followed the normal story.  The DM is mastering his second campaign (the first one is still ongoing, but with veteran players). The DM also plays a lot of survival campaigns as a player.  Is this situation normal? If yes, why? If not, what should I say to the DM?  Note that I'm fully aware of the "long rest" rule as written on page 186 of the PHB. This is why I encouraged my team to say that we resume our rest. (thanks Bloodcinder) Minimum of $\sqrt{\frac{a}{b+c}}+\sqrt{\frac{b}{c+a}}+\sqrt{\frac{c}{a+b}}$ What is the minimum of $$f(a,b,c):=\sqrt{\dfrac{a}{b+c}}+\sqrt{\dfrac{b}{c+a}}+\sqrt{\dfrac{c}{a+b}}$$ where $a,b,c$ are positive real numbers?  When $a=b=c$, we have $f(a,b,c)=\dfrac{3}{\sqrt{2}}\approx 2.12$  When $a=1,b=c\rightarrow\infty$, we have $f(a,b,c)\rightarrow 2$. So the minimum is at most $2$. Today I upgraded to the Creators Update by running setup from the ISO mounted locally. When I got back to my computer I opened Task Manager and saw my memory usage was a lot higher than it was previously (it's now almost 6GB memory usage at idle after logging in instead of 2-3GB with the previous Windows build) - the processes tab revealed that there were upwards of 60 different instances of svchost.exe running. This 6GB figure is just for process memory - not including memory used for caching or "standby".  I ran tasklist /svc to get a listing of which services were in which processes and it lists almost every svchost.exe instance as only having one running service contained within (with the exception of a handful of instances that are running a few system services).  Here's  my output:  Image Name                     PID Services ========================= ======== ============================================ System Idle Process              0 N/A System                           4 N/A smss.exe                       440 N/A csrss.exe                      612 N/A wininit.exe                    700 N/A csrss.exe                      708 N/A services.exe                   776 N/A lsass.exe                      784 KeyIso, Netlogon, SamSs, VaultSvc svchost.exe                    888 PlugPlay svchost.exe                    908 BrokerInfrastructure, DcomLaunch, Power,                                    SystemEventsBroker fontdrvhost.exe                936 N/A svchost.exe                   1000 RpcEptMapper, RpcSs svchost.exe                    104 LSM winlogon.exe                   544 N/A fontdrvhost.exe                420 N/A svchost.exe                   1072 DeviceInstall dwm.exe                       1136 N/A svchost.exe                   1164 BFE, CoreMessagingRegistrar, MpsSvc svchost.exe                   1424 lmhosts svchost.exe                   1432 W32Time svchost.exe                   1440 nsi svchost.exe                   1448 wudfsvc svchost.exe                   1528 hidserv svchost.exe                   1628 Dhcp svchost.exe                   1716 Dnscache svchost.exe                   1748 EventLog WUDFHost.exe                  1792 N/A svchost.exe                   1908 TimeBrokerSvc svchost.exe                   1952 NlaSvc NVDisplay.Container.exe       1968 NVDisplay.ContainerLocalSystem svchost.exe                   1324 Themes svchost.exe                   1596 ProfSvc svchost.exe                   1944 EventSystem svchost.exe                   1052 netprofm svchost.exe                   2116 StateRepository svchost.exe                   2256 SENS svchost.exe                   2296 AudioEndpointBuilder svchost.exe                   2304 FontCache (etc)...   I know you can configure individual services to run in their own instance of svc with the sc config &lt;serviceName&gt; type= own command, but to my knowledge I've never run this command.  I took a quick look at Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services and it looks like the Type key values for most of these services is missing the flag bit at 0x10 which controls if a service runs in its own svchost.exe instance or not. I wonder what could have effected this change.  Has anyone else observed this behaviour before or after installing Windows 10 Creators Update? If it is a default configuration change, will it have any implications on system performance or stability?  I suspect it will increase system stability because if a service crashes it won't bring down other services - but this comes at a massive cost of RAM - but I've never experienced a service crashing on me - or at least ever noticed it (instead the worst problem I've had is with wuauserv consuming 100% CPU for hours on end - and that's not a problem process isolation will solve).  (I just noticed: they finally added an address bar to the Registry Editor!) Windows 10 ver 1607: File Explorer long paths not working? I updated to the Windows 10 home anniversary edition version 1607 and set LongPathsEnabled to 1 with regedit.exe but the File Explorer doesn't seem to work with long paths still. If you select a long path file and try to rename it, no option will be available. I restarted the computer after making the changes and update.   Is there any way to enable renaming in the File Explorer in the new updated version? Did I miss a step somewhere? The "proper" way to test if a service is running in a script My problem:  I'm writing a bash script and in it I'd like to check if a given service is running.  I know how to do this manually, with $ service [service_name] status.  But (especially since the move to systemd) that prints a whole bunch of text that's a little messy to parse. I assumed there's a command made for scripts with simple output or a return value I can check.  But Googling around only yields a ton of "Oh, just ps aux | grep -v grep | grep [service_name]" results. That can't be the best practice, is it? What if another instance of that command is running, but not one started by the SysV init script?  Or should I just shut up and get my hands dirty with a little pgrep? The Maximum possible order for an element $S_n$ Evaluating the integral $\mathop{\lim}\limits_{n \to \infty} \int_{-1}^{1} f(t)\cos^{2}(nt) \ dt $ Given that $f\colon [-1,1] \to \mathbb{R}$ is a continuous function such that $ \int_{-1}^{1} f(t) \ dt =1$, how do I evaluate the limit of this integral: $$\lim_{n \to \infty} \int_{-1}^{1} f(t) \cos^{2}{nt} \,dt$$   What I did was to write $\cos^{2}{nt} = \frac{1+\cos{2nt}}{2}$ and substitute it in the integral so that I can make use of the given hypothesis of $\int_{-1}^{1} f(t) \ dt =1$. So the integral becomes,   \begin{align*} \int_{-1}^{1} f(t)\cos^{2}{nt} \ dt = \int_{-1}^{1} f(t) \biggl[\frac{1+\cos{2nt}}{2}\biggr] \ dt  &amp;  \\  \hspace{3cm} = \frac{1}{2}\int_{-1}^{1}f(t) \ dt + \int_{-1}^{1} \frac{f(t)\cos{2nt}}{2} \ dt \end{align*}  But I don't really know how I can evaluate the second integral and also I can't realize as to why that integral condition on $f$ has been assumed. Moreover without assuming that condition on $f$ is it possible to evaluate this integral? If yes, then what would the answer be? I had recently entered the UK without a visa to be with my partner, from 21 July 2016 until 16 December 2016. I hope to return on the 9th of January. We don't meet the income requirement for a Spouse visa. I recently applied to university, and got in, and was intending to return to the UK on a student visa, but my university did not tell me about maintenance fees and my loan wasn't large enough to cover it all, so my visa would have been denied.  Now, I am hoping to attend university in the next semester, and therefore return to the US to apply for that visa. Do you think that if I try to return to the UK without a visa, I will be turned away?  I won't be working or studying during this time, however, I'm afraid that they'll consider it living in the UK illegally; I don't have a criminal record or anything like that. Why are my Elytra Wings are not activating? Why do my Elytra Wings only work intermittently?  I do not forget to jump, but when I switch to Survival and then back to Creative, they won't activate whatsoever. Any help is much appreciated. Thanks. Python 3 with QGIS on Mac? I need to start learning Python, and I want to learn with version 3.x. I understand that QGIS--at least some plug-ins--relies on Python and Tcl/Tk, and probably on specific versions. Assuming that QGIS is dependent on Python 2, can anyone tell me how to set up parallel installations of Python 3 and Tcl/Tk such that QGIS will have what it needs and I can use Python 3 for other purposes? Setting NTP on Windows 2008 Domain Why does the connection time out when connecting to a server? AudioSessionSetActive and AudioSessionSetProperty is deprecated in iOS 7 Prove the summation:  $$\sum_{i=1}^n i! \cdot i = (n+1)! - 1$$ using induction.   base case:  $n=1$: \begin{align*} \sum_{i=1}^1 i! \cdot i &amp;= (1+1)! - 1 \\ 1 &amp;= 2 - 1 \\ 1 &amp;= 1 \end{align*}   This is a question from my test review packet, currently have the base case completed and I am a bit lost on where to go from there. Any help/hints are appreciated. What’s the difference between "Array()" and "[]" while declaring a JavaScript array? Why didn't Snape keep or secure his copy of Advanced Potion-Making? Boundary condition with spatial derivative is ignored by NDSolve Let $f:\mathbb{C} \rightarrow \mathbb{C}$ be a entire function. Suppose that there are $M$, $r&gt;0$ and $n\in \mathbb{N}$ such that $\left|f(z)\right|&lt;M\left|z\right|^n$ for all $z \in \mathbb{C}$ with $\left|z\right|\geq r$.  Show that $f$  polynomial of degree at most $n$.  Remark: I tried to follow the proof of Liuville's Theorem but I have complications with the condition  $\left|z\right|\geq r$..