I try to compile a program called ip sla responder (). i copied everything into a temp directory. root@srvmwips01:/tmp/ip-sla-responder-master# ls -l total 128 -rw-r--r-- 1 ipsla ipsla  1072 Nov  9  2018 LICENSE -rw-r--r-- 1 ipsla ipsla   641 Nov  9  2018 Makefile -rw-r--r-- 1 ipsla ipsla  3143 Nov  9  2018 README.md -rw-r--r-- 1 ipsla ipsla  2421 Nov  9  2018 arp.c -rw-r--r-- 1 ipsla ipsla  8312 Nov  9  2018 cisco.c -rw-r--r-- 1 ipsla ipsla  1946 Nov  9  2018 ether.c -rw-r--r-- 1 ipsla ipsla  3229 Nov  9  2018 icmp4.c -rw-r--r-- 1 ipsla ipsla  2320 Nov  9  2018 icmp6.c -rw-r--r-- 1 ipsla ipsla  2413 Nov  9  2018 ip.c -rw-r--r-- 1 ipsla ipsla  2368 Nov  9  2018 ip6.c -rw-r--r-- 1 ipsla ipsla  3506 Nov  9  2018 junos.c -rw-r--r-- 1 ipsla ipsla  9323 Nov  9  2018 main.c -rw-r--r-- 1 ipsla ipsla  2587 Nov  9  2018 pak.c -rw-r--r-- 1 ipsla ipsla   487 Nov  9  2018 responder.conf.sample -rw-r--r-- 1 ipsla ipsla  4743 Nov  9  2018 responder.h -rw-r--r-- 1 ipsla ipsla 33922 Nov  9  2018 test-main.c -rw-r--r-- 1 ipsla ipsla  1920 Nov  9  2018 udp4.c -rw-r--r-- 1 ipsla ipsla  1849 Nov  9  2018 udp6.c -rw-r--r-- 1 ipsla ipsla  3020 Nov  9  2018 utils.c  But when i want to compile this, i get an error message: root@srvmwips01:/# cd /tmp/ip-sla-responder-master/ root@srvmwips01:/tmp/ip-sla-responder-master# make CC=gcc gcc -W -Wall -Wno-unused -Wno-unused-parameter -ggdb -O3 -DCONFIGFILE=&quot;\&quot;/etc/responder.conf\&quot;&quot; -c -o utils.o utils.c /bin/sh: 1: gcc: not found make: *** [Makefile:27: utils.o] Error 127  I installed a fresh ubuntu LTS 20.04 but it doesnt seem to work. I installed followin tools in order to compile: root@srvmwips01:/# apt install make root@srvmwips01:/# apt install libpcap-dev  I already tried chown and chmod to make sure there is no permission problem. The manual says that i need some more things in order for the compile to work:  It needs pcap(3) interface on kernel and AF_PACKET. It also requires librt and libpcap.  But these packages are not available from apt install (anymore?). how do i get them? The libpcap i could find as a dev version. Not sure if this is the same, though. I read, that there is a prerequisit check command, that loads all the necessary modules from the apt store, but this only works for applications hosted up there. I downloaded my appliacation via github. I searched the site  to find the libraries, but some searches come back with no results while others come back with a boat load of entries.
I'm trying to  working on Linux. I have PAINSTAKINGLY installed NVidia drivers, Cuda 5.0 and incidentally I'm failing on the last step when I run make:  make  all-recursive make[1]: Entering directory `/var/progs/CudaMiner' Making all in compat make[2]: Entering directory `/var/progs/CudaMiner/compat' Making all in jansson make[3]: Entering directory `/var/progs/CudaMiner/compat/jansson' gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I../..     -g -O2 -MT dump.o -MD -MP -MF .deps/dump.Tpo -c -o dump.o dump.c /bin/bash: gcc: command not found make[3]: *** [dump.o] Error 127 make[3]: Leaving directory `/var/progs/CudaMiner/compat/jansson' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory `/var/progs/CudaMiner/compat' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/var/progs/CudaMiner' make: *** [all] Error 2   I'm pretty sure I have gcc, in fact I have multiple versions of it. I installed version 4.6 (which is what cuda requires) but it doesn't seem to find it. I'm so close!  Thanks in advance.
A general explanation of rim, tire and tube specifications This is an unofficial list/changelog of new features and various changes to Stack Overflow and the Stack Exchange network.  It is maintained by the community, while a Stack Exchange employee changes the accepted answer to ensure that the latest changes remain on top (given default user settings).  To see the list in reverse chronological order (latest entry on top), .  For those adding new features here: please post only feature changes that affect the whole network and have some global impact. i.e. bug fixes don't belong here, nor do mobile app updates. The world I've been playing crashed recently and took the level.dat with it, so I've recreated it, however I have no idea what my seed used to be, and I really don't want to end up with another corrupted game world from exploring with the wrong seed.  How can I recover the seed which was used to generate my world? Commutator Subgroup and the Largest Abelian Quotient Good day. I'm not too sure how I should go about asking my question, so if it is in anyway confusing, feel free to edit it.   In my Group Theory course we defined and showed a few properties of the commutator subgroup $[G,G]$ of a group $G$. And then we stated and proved a lemma in lecture that I'm having some difficulty wrapping my head around. I'll state it here for clarity.  Lemma a) The commutator subgroup $[G,G]$ of $G$ is a normal subgroup of $G$. b) The quotient group $G / [G,G]$ is the largest abelian quotient of G in the sense that every homomorphism $\varphi : G \to A$ where $A$ is an an abelian group, induces a unique homomorphism $\bar \varphi : G/[G,G] \to A$ so that $\varphi =\bar \varphi \circ \pi$ where $\pi : G \to G/[G,G]$ is the quotient homomorphism.  Now, it's not the proof of this lemma that I'm having trouble with, it's the italicized text that is messing with me. I completely understand what it is that the italicized text is saying, I'm just not too sure why it is that the property gives us the "largeness" that is claimed. I can see that the above forces $G$ to "pass through" $G/[G,G]$ before it "reaches" $A$ (I apologize for the casual terminology), so I can sort of see why $G/[G,G]$ should be the largest quotient, in a non-rigorous sort of way.  Overall I'm very confused. Perhaps I'm missing something very simple. Any help or nudges in the right direction would be much appreciated.   As a side note I did try a search on Google and here on Stack Exchange and couldn't find anything that answered my question. So if I missed something obvious, then my apologies. Thank you in advance. Where are my Screenshots? I pressed F2 to take a few Minecraft screenshots. Later I couldn't find them. Where are they stored on my computer? Why are there both Static and Kinetic Friction? When dragging an object, there is a greater start-up force than the force it takes to keep it moving. Why is this? Why are there two different values for friction? I was doing graph theory homework. I was counting the spaning trees of graph G. Such that G is two complete graphs on n vertices connected by two edges. I got to this expression: $$2n^{2\left(n-2\right)}+2\left(n^{\left(n-2\right)}\sum_{i=0}^{n-2}\binom{n-2}{i}\left(1+i\right)^{\left(i-1\right)}\left(n-i-1\right)^{\left(n-i-3\right)}\right)$$ I know that this expression gives the correct result, however, I was told by my teacher that it is possible to express that number in closed form e.g. without the summation. However, I have yet to find a solution. I am reading through Folland's Real Analysis: Modern Techniques and Their Applications, and they have the following proposition and proof:     Proposition: If $\{f_{j}\}$ is a sequence of $\bar{\mathbb{R}}$- valued measurable functions on $(X, \mathcal{M})$, then the functions:      $$g_{1}(x)=\sup_{j} f_{j}(x)$$ $$g_{2}(x)=\inf_{j} f_{j}(x)$$ are   measurable.       Proof:      We have       $$g_{1}^{-1}((a,\infty])= \bigcup_{j=1}^{\infty}  f_{j}^{-1}((a,\infty])$$ $$g_{2}^{-1}([-\infty,a))=  \bigcup_{j=1}^{\infty} f_{j}^{-1}([-\infty,a))$$      Where the result follows from the fact that $g_{1}^{-1}((a,\infty])\in  \mathcal{M}$ for all $a \in \mathbb{R} \iff g$ is measurable, and   $g_{2}^{-1}([-\infty,a))\in \mathcal{M}$ for all $a \in \mathbb{R}  \iff g$ is measurable.   I understand the last part of the proof, but how do we know $g_{1}^{-1}((a,\infty])= \bigcup_{j=1}^{\infty}f_{j}^{-1}((a,\infty])$ and $g_{2}^{-1}([-\infty,a))=\bigcup_{j=1}^{\infty} f_{j}^{-1}([-\infty,a))$? I would appreciate any help with this. How do I erase/format a harddisk from a live CD? I need to format a drive containing an old install of Ubuntu 10.04, to install Vista (not my idea!) Vista setup apparently refuses to format non-FAT32 or NTFS partitions. However, I can't seem to format it from my live CD (Ubuntu 11.04) at all; I keep getting "device is busy" errors. What is the simplest way to format this drive? How do you prevent oatmeal from overflowing? Whenever I cook oatmeal (whether steel cut oats in a rice cooker or pan, or rolled oats in the microwave), it always overflows. How do you prevent this?   Do you just use a bigger container? Do you just take the pan off the heat or bowl off the microwave when it's about to overflow? I've also heard that if you put dried fruit or something like that along with the oatmeal while cooking, that helps prevent it from overflowing -- is this true? I tried:   Launching Ubuntu Software Centre I typed in "air" and found "adobe air" It says "available from the 'maverick-partner' source. and has a button "use this source" I clicked "use this source", I saw a "in progress (1)" icon come up in the side bar, and disappear, but nothing happened/changed.   I'm stuck.  I have actually already added the maverick-partner source to apt so I could install sun-java6-jdk. How do I compare strings in Java? I've been using the == operator in my program to compare all my strings so far. However, I ran into a bug, changed one of them into .equals() instead, and it fixed the bug.  Is == bad? When should it and should it not be used? What's the difference? Bluetooth disappeared in Windows 10 I have a Lenovo G580 laptop. In the past, using Windows 8, I could use Bluetooth to connect to other devices.  Installing Windows&nbsp;10, Bluetooth simply disappeared. I can't find anything related to Bluetooth in the Device Manager, also in Settings → Devices.  There is no Windows&nbsp;10 Bluetooth driver for my laptop.  What can I do? How can I selectively disable paste blockers These may be separate questions, but the following MWE:    \usepackage{pdfpages} ...   \addcontentsline{lot}{subsection}{\ref{tab:UserRoles} \textbf{User Roles}}   \includepdf[pages={-}, pagecommand={\label{tab:UserRoles}}, offset=0in -1in, addtolist={9, table, {The User Roles table}, tab:UserRoles}]{UserRolesTable}   ...   has several unexpected behaviors.   I get the following warning:  Package pdfpages Warning: There's something wrong with the entries of `addtolist'. Not all entries were processed. Check `addtolist' [in the MWE]."    Probably due to the \label not being bound to the inserted pdf (in a table environment), my inserted PDF is numbered using the section, and not the expected "Table X" value.   The manually-inserted LoT line (which also uses the section number rather than the incremented table number) is not formatted like the other lines in the LoT - the number lines up, but the table caption itself is not aligned with the others in the list.   The source PDF has no errors and displays correctly in the output PDF.  PDFLaTeX -> BibTex    MWE:  \documentclass[11pt,letterpaper,twoside,final]{article} \usepackage{pdfpages} \begin{document} \listoftables \begin{center} \textbf{Table \ref{tab:UserRoles} - The User Roles Table} \addcontentsline{lot}{subsection}{\ref{tab:UserRoles}  \textbf{User Roles}} % manual entry in ToC  \includepdf[pages={-}, pagecommand={\label{tab:UserRoles}}, offset=0in -1in, addtolist={9, table, {The User Roles table}, tab:UserRoles, lot}]{UserRolesTable} \end{center} \end{document} I have Sanguinare Vampiris. I don't really want to become a vampire. How can I cure myself? Expansion of $(1+\sqrt{2})^n$ I was asked to show that $\forall n\in \mathbb N$ there exist a $p\in \mathbb N^\ast$ such that $$(1+\sqrt{2})^n = \sqrt{p} + \sqrt{p-1}$$   I used induction but it wasn't fruitful, so I tried to use the binomial expansion of $(1+\sqrt{2})^n$ but it seems I lack some insight to go further.   Any hint is welcomed. Beamer itemize not aligned when in blocks While making a poster, I've got two columns with blocks with itemize inside them. MWE:  \documentclass[final]{beamer} \mode&lt;presentation&gt;{}  \usepackage{times} \usepackage{amsmath,amssymb} \usepackage[english]{babel} \usepackage[latin1]{inputenc}  \begin{document} \begin{frame}[t]{}   %\leavevmode \begin{columns}[t, onlytextwidth] \begin{column}{.5\linewidth} \begin{block}{Contributions} \begin{itemize} \item First Item \item Second Item \end{itemize} \end{block} \end{column} \begin{column}{.5\linewidth} \begin{block}{Approach} \begin{itemize} \item First Item \item Second Item \end{itemize} \end{block} \end{column} \end{columns}  \end{frame} \end{document}   My local installation and ShareLaTeX would misalign the bullets(baselines added by me):   This problem seems similar to:        But this time it happens when itemize is inside the block. If one removes the blocks it works fine.  Am I missing something or does it look like a Beamer bug?  Thanks! I'm a LaTeX noob, sorry if I missed something stupid. Sum of two squares modulo p I have heard somewhere that for all primes $p$, for all $k$, there exist $x, y$ s.t. $x^2 + y^2\equiv k \pmod{p}$? I recall that the proof is very elementary, but I can't remember such a proof. How would one prove this? One way is to use Cauchy-Davenport, but I don't think that this is the simplest solution. Line breaks in listings Is there a way like wrap the line after at most 60 letters but it should not break inside some commands like listings does?  Example:      \documentclass[a5paper]{article}     \usepackage[T1]{fontenc}     \usepackage[utf8]{inputenc}     \usepackage{listings}     \usepackage{xcolor}      \lstset{%       language=[LaTeX]TeX,       backgroundcolor=\color{gray!25},       basicstyle=\ttfamily,       breaklines=true,       columns=fullflexible     }      \begin{document}     \begin{lstlisting}     The roadrunner is the fastest running bird \remark{Check this again with a zoologist!}.     \end{lstlisting}     \end{document}   Output:      The roadrunner is the fastest running bird         remark{Check this again with a zoologist!}.   That should not happen! In my eyes this problem is not discussed in .