How can I get the result of ls into a variable in bash Script?
How can I assign the output of a command to a shell variable?
Is there a word or phrase to define several words linked by hyphens, such as in "a sit-back-and-wait-for-it attitude" some more examples:   "And she gave me that aren't-I-just-gorgeous smile." "The I-did-it-my-way approach." "A from-this-day-forward-I-have-no-son scene." I installed vsFTPd for running an FTP server on  (Wheezy). I checked the vsFTPd version was 2.3.5, and I configured it like so:  listen=YES local_enable=YES write_enable=YES chroot_local_user=YES pasv_min_port=15000 pasv_max_port=15200 allow_writeable_chroot=YES   I followed these articles for solving this problem:       And many others on Google and forums, but my problem was not solved.  NOTE: I have solved this problem on  (Precise Pangolin), but that solution does not work on Debian 7.3.  I really mixed up on it?! A known identity of binomial coefficients is that $$ \sum_i\binom{m}{i}\binom{n}{j-i}=\binom{m+n}{j}. $$ Is there a combinatorial proof/explanation of why it holds? Thanks. How to use the Extended Euclidean Algorithm manually? I've only found a recursive algorithm of the extended Euclidean algorithm. I'd like to know how to use it by hand. Any idea? How do I join my partitions? I have only seen infinite vector spaces and the one finite vector space i.e the trivial vector space $\{0\}$. Is there any other finite vector space? Entire function bounded by a polynomial is a polynomial Suppose that an entire function $f(z)$ satisfies $\left|f(z)\right|\leq k\left|z\right|^n$ for sufficiently large $\left|z\right|$, where $n\in\mathbb{Z^+}$ and $k&gt;0$ is constant. Show that $f$ is a polynomial of degree at most $n$. MacOS dmg file question Not entirely sure if this is where to ask this, but I can't find another place to...  I've recently switched from Windows to Mac and I am trying to understand more in depth what I'm working with.  My question is: are .dmg files the equivalent of .zip files in Windows? I came to this theory when downloading a .dmg and when I opened it, it contained a .app and and text file read me. To me, this seems like a compressed file.   Is this correct? Convert a list to a string in C# How to download/read only the first 80KB of a file? Using the properties panel I can add, with "+"  button, only eight UV maps. Is it possible to have more than 8 of them? If matrix $A$ is unitary and $B^2=A$, is $B$ necessarily unitary? How can I stop being prompted to unlock the 'default' keyring on boot? Whenever Ubuntu boots up, a dialogue pops up asking me to unlock my default keyring. Is there some way this can unlock automatically through PAM or some other magical way? Is it wrong to ask the same question elsewhere? I just posted a question to  and afterward realized that it might not be answered very quickly due to how specific it was. So I also posted it on the   I plan to update both the SU and Ubuntu posts with the final answer I end up using, but I can't help but feel users from both places might not like that I've posted to both.  So my question is: Is it frowned upon to post the same question elsewhere and link to it? Is it possible to password protect a zip file created by Windows itself (without external tools?) Raster generalization - buffers in rasters, expand pixels? Is it possible to create buffers for pixels of raster files? Actually I need to expand the pixels classified as 1 (in white in the figure) with a spatial range of 1 or 2 pixels, in order to perform some generalization.  I'm using QGIS, is this possible with gdal or something? Title bar settings missing in GNOME Tweaks on Ubuntu 20.04 I tried to move my "close, minimise and maximise" to the right + add the macOS theme to it. However, I have not been able to find any settings for that. In GNOME Tweaks > Windows the settings to put the buttons to the right are missing completely. Show that any set in a metric space can be written as the intersection of open sets Show that any set contained in the metric space $(X, d)$ can be   written as the intersection of open sets.   Definitions: A set $A \subseteq X$ is open if $\forall x \in A$, $\exists \varepsilon&gt;0$ such that $B_{\varepsilon}(x) \subseteq A$. A set $C \subseteq X$ is closed if and only if $X \setminus C$ is open.   I also know that the intersection of a finite collection of open sets is open and that any open ball contained in $X$ is open. How can I prove this question? How long is it safe to drink coffee after brewed? Making a logic circuit with only NAND GATES?