I need to free up some space in the /boot partition.  Looking in another [thread][1] I found I should use sudo dpkg --list 'linux-image*' to locate and sudo apt-get remove linux-image-VERSION to remove unused Kernel Images however no matter which one I choose they all say the last one 51 depends on it; it gives the option to force it but I am not 100 % sure about that the right way to go.  $ uname -r 3.13.0-49-generic  $ sudo dpkg --list 'linux-image*' Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name                     Version           Architecture      Description +++-========================-=================-=================-=====================================================  un  linux-image              &lt;none&gt;            &lt;none&gt;            (no description available) un  linux-image-3.0          &lt;none&gt;            &lt;none&gt;            (no description available)     ii  linux-image-3.13.0-32-ge 3.13.0-32.57      i386              Linux kernel image for version 3.13.0 on 32 bit x86 S     ii  linux-image-3.13.0-40-ge 3.13.0-40.69      i386              Linux kernel image for version 3.13.0 on 32 bit x86 S     ii  linux-image-3.13.0-43-ge 3.13.0-43.72      i386              Linux kernel image for version 3.13.0 on 32 bit x86 S     ii  linux-image-3.13.0-44-ge 3.13.0-44.73      i386              Linux kernel image for version 3.13.0 on 32 bit x86 S     ii  linux-image-3.13.0-45-ge 3.13.0-45.74      i386              Linux kernel image for version 3.13.0 on 32 bit x86 S     ii  linux-image-3.13.0-46-ge 3.13.0-46.79      i386              Linux kernel image for version 3.13.0 on 32 bit x86 S     ii  linux-image-3.13.0-48-ge 3.13.0-48.80      i386              Linux kernel image for version 3.13.0 on 32 bit x86 S     ii  linux-image-3.13.0-49-ge 3.13.0-49.81      i386              Linux kernel image for version 3.13.0 on 32 bit x86 S in  linux-image-3.13.0-51-ge &lt;none&gt;            i386              (no description available)     ii  linux-image-extra-3.13.0 3.13.0-32.57      i386              Linux kernel extra modules for version 3.13.0 on 32 b     ii  linux-image-extra-3.13.0 3.13.0-40.69      i386              Linux kernel extra modules for version 3.13.0 on 32 b ii  linux-image-extra-3.13.0 3.13.0-43.72      i386              Linux kernel extra modules for version 3.13.0 on 32 b ii  linux-image-extra-3.13.0 3.13.0-44.73      i386              Linux kernel extra modules for version 3.13.0 on 32 b ii  linux-image-extra-3.13.0 3.13.0-45.74      i386              Linux kernel extra modules for version 3.13.0 on 32 b     ii  linux-image-extra-3.13.0 3.13.0-46.79      i386              Linux kernel extra modules for version 3.13.0 on 32 b     ii  linux-image-extra-3.13.0 3.13.0-48.80      i386              Linux kernel extra modules for version 3.13.0 on 32 b     iF  linux-image-extra-3.13.0 3.13.0-49.83      i386              Linux kernel extra modules for version 3.13.0 on 32 b     iU  linux-image-extra-3.13.0 3.13.0-51.84      i386              Linux kernel extra modules for version 3.13.0 on 32 b     iU  linux-image-generic      3.13.0.51.58      i386              Generic Linux kernel image
Every time I install a new Linux kernel, it gets left in the grub_config, making the boot menu longer each time.    I know I can manually search through the installed packages and remove them.  Does Ubuntu provide any easier way to clean them up or keep them from showing in the boot list?
Pass extra parameters to WebSQL callback function? Problem: Suppose $f$ is continuous for $x\ge 0$, differentiable for $x&gt;0$, $f(0)=0$, and $f'$ is monotonically increasing.  Define $g(x)=\frac{f(x)}{x}$ for $x&gt;0$. Prove that $g$ is monotonically increasing.  Source: W. Rudin, Principles of Mathematical Analysis, Chapter 5, exercise 6. ContourPlot of implicit function doesn't work when I square the equation Suppose I have a node in the shape of a circle. How can I make its border thicker?   \node[circle, draw=blue!80, inner sep=0pt, minimum size=12pt] (1) at (0,0) {1}; Defining font color inside highlight fails Since I wanted a better readability of highlights of a would be black &amp; white-printed document, I needed to change both the highlighting color (gray) AND the font color (white).  Depending which command you implement inside the other will compile or not: \hl{\textcolor{white}{Fail}} does not work, compiling returns Package xcolor Error: Undefined color '{white}'.  Here's the mwe:  \documentclass{article} \usepackage{xcolor} \usepackage{color} \usepackage{soul} % Enables highlighting \sethlcolor{gray}  \begin{document}      \textcolor{white}{\hl{Success}}     %% Error:     %% Package xcolor Error: Undefined color `{white}'.     \hl{\textcolor{white}{Fail}}  \end{document}   So, in the end, the problem is sorta solved but I thought you might have an answer as to what happens. Let $t\in \mathbb R$. Prove that $\displaystyle{\sum_{n=1}^{\infty}n^{3}\sin\left(\frac{1}{n}\right)-n^{2}+t}$ converges iff $t=\frac{1}{6}$.  While the $(\Rightarrow)$ direction was fairly easy (as $a_n$ should converge to $0$, forcing $t=\frac{1}{6}$), i'm facing some hard time trying to prove the second direction, that is $\displaystyle{\sum_{n=1}^{\infty}(n^{3}\sin\left(\frac{1}{n}\right)-n^{2}+\frac{1}{6})}$ converges. I did notice that $a_n=a_{-n}$ and tried to write this series as a Leibnitz series, but had no luck since the sequence doesn't decrease. I also tried to prove absolute convergence but then again, no luck. Thanks. I'm rather interested in getting my feet wet at the interface of  and . Can anybody give me references to some good books on these topics? I'm looking for very introductory technical books. As far as I know, only a player character's non-temporary ability scores are considered for taking feats, taking prestige classes, etc. Meanwhile, any ability bonus that comes from spells, or magic items that are in effect only while worn, is not counted (except tomes which increase abilities permanently).  So a Fighter with low Int who wants to qualify for Combat Expertise can't use spells or items that gives an Int bonus to raise it high enough to qualify. Is that right?  For example:  Say our fighter has Str 12, so he can not take the Power Attack feat. Suppose he asks for a spell from the wizard to make his Str 16, or to borrow a ring which provides +4 Str from another character. (Or any other method that will provide him a non-permanent bonus). His Str is now 16. Can he take Power Attack with that non-permanent bonus now? Because after the spell duration ends or he takes off the ring, his Str score will be to low again to qualify for Power Attack. Brief Description:  I need my Ethernet card (en0) to see all traffic under 192.168.2.xxx.  However I also need to use WiFi card (en1) for all other traffic.  OS: OS X Lion    I am using a separate network location to deal with this specific use (since this is a for a robotics project that communicates via Ethernet). Ethernet (en0) had to be set up as a static IP (192.168.2.10) per the requirements for the device I am connecting to. All connections on the Ethernet card (en0) should be 192.168.2.xxx as specified above. WiFi (en1) is set up as DHCP to a router since their is no point in assigning it as a static for general purpose traffic. Ethernet (en0) is set up as priority over WiFi (en1).  I would also like to keep this under the network location preferences if at all possible since I do not require this feature to be on all the time.  I would really appreciate your help on this. No one I have talked to knows how to solve this. Is there a way to see the pokestops and gyms on a map? I'm on vacation on a pretty rural area and there is only 3 pokestops and a gym around me. I wonder how many pokestops and gyms are near my house in another city.   Is there a way to see pokestops and gyms in other places in a map (preferably online)?    There seems so be loads of websites linked. While posting your own website is allowed (as long as it answers the question properly) please keep in mind that stating your affiliation is required (Add something like "Disclaimer: I own this website" to the end of your answer) in order to avoid being spam flagged. I want to be able to close an alert box automatically using Javascript after a certain amount of time or on a specific event (i.e. onkeypress).  From my research, it doesn't look like that's possible with the built-in alert() function.  Is there a way to override it and have control over the dialog box that it opens?  Also, I don't want an override that shows a hidden div as the alert.  I need an actual dialog box. Most statements regarding Riemann integrals (at least the ones that I have encountered) begin with the statement "for $f(x)$ bounded on $[a,b]$." I am wondering if Riemann integrability implies boundedness. I think that this has to be the case, but I am not sure. If Riemann integrability does imply boundedness, are improper integrals considered Riemann integrals? I would think that improper integrals wouldn't be Riemann integrals since improper integrals are allowed to be equal to $+\infty$ or $-\infty$. Or are improper integrals that are not equal to $\infty$ considered Riemann integrals?   I am confused. Decide if the series converges and prove it using comparison test: $\sum_{k=1}^{\infty}\frac{1}{2k+3}$ Decide if the series converges and prove it using comparison test:   $\sum_{k=1}^{\infty}\frac{1}{2k+3}$   $$\frac{1}{2k+3} &lt;\frac{1}{2k}&lt;\frac{1}{k}$$  and since $\sum_{k=1}^{\infty}\frac{1}{k}$ diverges (we have defined that in our readings, so I can claim it here), the complete series will diverge, too.  Did I do everything correctly? What makes me feel a bit unsure is that there is no "$\leq$" sign anywhere and when I look up the comparison test on the internet, I don't see any "&lt;" or ">" in the definition.  Is it correct anyway? File.Copy is giving exception How long does it take for badges to be awarded? How are they generated? Do badges get calculated in real time, or do they get calculated by an external service? How long does it take for a badge to be awarded, once its requirements are met?  Does Stack Overflow use any external services to do things, like maintenance, e-mailing or badge calculation? How to disable creation of desktop workspaces on macbook?   Somehow they get created when I don't need them. [OS: Mojave] "Lunch" vs. "dinner" vs. "supper" — times and meanings? I've seen cases where a noon-time meal is referred to as dinner, and the evening meal is called supper. There's also lunch around noon followed by dinner in the evening. Is there a particular difference between dinner and supper, or a circumstance where lunch becomes dinner? Why is the work done on a charge calculated from infinity? Why is the work done on a charge calculated from infinity to a point? Why not from one particular point to other? If a company is bought by another company, does my stock rollover to the new company when it is combined with the new parent company? I've got a simple Leaflet map with a basemap and one map-layer coming from my own hosted GeoServer.  I made the layers show up nicely in a map.  Now I want to add popups on the point layer showing information stored in MapService.  I couldn't find too much information about that topic.   There's one link to a working example but the link seems to be broken. I found another example which I addopted. You can see it on . I'd like to display the content of the name field in the attribute table but nothing happens when the user clicks the map.  Any idea?