sudo apt update Err:17 http://ppa.launchpad.net/leaeasy/dde/ubuntu focal Release        404  Not Found [IP: 2001:67c:1560:8008::15 80]      Err:18 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu focal Release        404  Not Found [IP: 2001:67c:1560:8008::15 80]       Err:19 http://ppa.launchpad.net/mc3man/xerus-media/ubuntu focal Release        404  Not Found [IP: 2001:67c:1560:8008::15 80]      Err:20 http://ppa.launchpad.net/petrakis/wdt-main/ubuntu focal Release        404  Not Found [IP: 2001:67c:1560:8008::15 80]      Err:21 http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu focal Release        404  Not Found [IP: 2001:67c:1560:8008::15 80]      Err:22 http://ppa.launchpad.net/webupd8team/java/ubuntu focal Release        404  Not Found [IP: 2001:67c:1560:8008::15 80]      Err:23 http://ppa.launchpad.net/webupd8team/java/ubuntu eoan Release        404  Not Found [IP: 2001:67c:1560:8008::15 80]      Reading package lists... Done      E: The repository 'http://ppa.launchpad.net/leaeasy/dde/ubuntu focal Release' does not have a Release file.      E: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/ubuntu focal Release' does not have a Release file.      E: The repository 'http://ppa.launchpad.net/mc3man/xerus-media/ubuntu focal Release' does not have a Release file.      E: The repository 'http://ppa.launchpad.net/petrakis/wdt-main/ubuntu focal Release' does not hav      E: The repository 'http://ppa.launchpad.net/ubuntu-wine/ppa/ubuntu focal Release' does not have a Release file.      E: The repository 'http://ppa.launchpad.net/webupd8team/java/ubuntu focal Release' does not have       E: The repository 'http://ppa.launchpad.net/webupd8team/java/ubuntu eoan Release' does not have   I upgraded Ubuntu version to 20.04. Now I can't use &quot;sudo apt update&quot; or &quot;sudo apt-get update&quot;. It gave me those PPA errors. Can anyone help me to fix those errors. Thank you.**
When updating, I get the following error message:   W: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/ubuntu xenial Release' does not have a Release file.   Here, I find another statement on this error:   This recommends removing certain PPAs; and, I'm not sure if I should do that since it might mean not getting the updates that I need.    Is this what I should do?
How to convert all shapefiles in folder into KML using ArcPy? I was trying to convert all the shp in a folder into kml.  featureclasses = arcpy.ListFeatureClasses() for fc in featureclasses:  # Set Local Variables   composite = 'COMPOSITE'   pixels = 1024   dpi = 96   clamped = 'CLAMPED_TO_GROUND'   scale = 1   outKML = fc[:-4] + &quot;.kmz&quot;   arcpy.LayerToKML_conversion(fc,outKML, scale, composite,'', pixels, dpi, clamped)   It always says Failed to execute. Parameters are not valid. ERROR 000732: Layer: Dataset ZZZ.shp does not exist or is not supported Failed to execute (LayerToKML). But I can manually do it within ArcMap 10.1 Desktop... Hyperref warning - Token not allowed in a PDF string Is it possible to combine processing power of 2 computers? Save Illustrator as PDF with transparent background How can I show that if some group $G$ has only one subgroup $K$ of order $n$, then $K$ is a normal subgroup? Would that mean that it only has one subgroup total? If so then I guess that makes sense. Forward an invocation of a variadic function in C In C, is it possible to forward the invocation of a variadic function? As in,  int my_printf(char *fmt, ...) {     fprintf(stderr, "Calling printf with fmt %s", fmt);     return SOMEHOW_INVOKE_LIBC_PRINTF; }   Forwarding the invocation in the manner above obviously isn't strictly necessary in this case (since you could log invocations in other ways, or use vfprintf), but the codebase I'm working on requires the wrapper to do some actual work, and doesn't have (and can't have added) a helper function akin to vfprintf.  [Update: there seems to be some confusion based on the answers that have been supplied so far. To phrase the question another way: in general, can you wrap some arbitrary variadic function without modifying that function's definition.] I'm looking for ways to speed up the combat in my D&amp;D 3.5 game. It seems that turns - both player and non-player - simply take too long. I have thought about giving everyone a 30 second timer, but I'm afraid that might inhibit their ability to come up with strategy and tactics. In a project the customer wants the images of the WMS to be secured against unauthorized access.   What are the common solutions to realize that?   Are they compatible with the OGC-standards? How can I find the files that were stored on my flash drive before I installed Ubuntu to it?   Edit: No, I didn't format it, my files are still on the flash drive root. I just need to know how to access them there. Is there a way to start over?  No spoilers here, but after a certain point in the game I wish I had done something different, so I'd like to perhaps start over and make some different decisions based on my current game play experience. Vertical (rotated) text in HTML table How can I make command aliases in Windows' Command Prompt like I would with bash?  I found out about doskey in , so I can do something like:  doskey ls=dir /b   ...and now the command ls acts a little more like ls on Unix.  (I type ls so often in cmd, it isn't even funny.)  But how do I get this to stick between sessions?  It goes away the next time I open cmd.exe.  (Is there something like .bash_profile?) How to identify a downvoting stalker Possible Duplicate:          Yeah I got a deranged stalker that keeps downvoting me.  Anyone know how going about identifying such individuals?  (I just got 4 all at the same time just after making a new post).      that was the question I originally asked. Please tell me, what is so wrong with it ? What does "all the more" mean and how is it used? Here is a sample context:     As you might expect, the framework also provides some convenience   classes to make the task of writing custom validators all the more agreeable.   (Emphasis added.) What are the alternatives for storing client side encrypted data? I want to store client side encrypted data in Drupal 7, so that it is encrypted on the client end, and stored and transmitted in encrypted form. The password is never transmitted or stored on the server. The only modules I have found which do this are  and  but they are for Drupal 6. I need something that is user specific, so that different users can use different keys, rather than a single key or a set of keys used on the server end. Are there any similar modules for Drupal 7? Groups of order $56$ Let $G$ be a group of order $56$. (We do NOT assume the Sylow-$7$ subgroup to be normal.) Then either the Sylow-$2$ subgroup is normal or the Sylow-$7$ subgroup is normal. How to prove?  My idea: consider the case $n_2=7,n_7=8$. Then the number of elements in all Sylow $2$ -subgroups and Sylow $7$-subgroups is at most exactly $(7-1)*8+(2-1)*7+1=56$. This cannot give a contradiction. We need to prove that $G$ is simple. Then $|G||(8!/2)$. To prove $G$ simple, we need to prove there does not exist normal subgroups of order $2$ and order $4$. But I do not know how to prove. How to interpret the output of XGBoost importance? I ran a xgboost model. I don't exactly know how to interpret the output of xgb.importance.  What is the meaning of Gain, Cover, and Frequency and how do we interpret them?  Also, what does Split, RealCover, and RealCover% mean? I have some extra parameters   Are there any other parameters that can tell me more about feature importances?  From the R documentation, I have some understanding that Gain is something similar to Information gain and Frequency is number of times a feature is used across all the trees. I have no idea what Cover is.  I ran the example code given in the link (and also tried doing the same on the problem that I am working on), but the split definition given there did not match with the numbers that I calculated.  importance_matrix   Output:             Feature         Gain        Cover    Frequence   1:            xxx 2.276101e-01 0.0618490331 1.913283e-02   2:           xxxx 2.047495e-01 0.1337406946 1.373710e-01   3:           xxxx 1.239551e-01 0.1032614896 1.319798e-01   4:           xxxx 6.269780e-02 0.0431682707 1.098646e-01   5:          xxxxx 6.004842e-02 0.0305611830 1.709108e-02  214:     xxxxxxxxxx 4.599139e-06 0.0001551098 1.147052e-05 215:     xxxxxxxxxx 4.500927e-06 0.0001665320 1.147052e-05 216:   xxxxxxxxxxxx 3.899363e-06 0.0001536857 1.147052e-05 217: xxxxxxxxxxxxxx 3.619348e-06 0.0001808504 1.147052e-05 218:  xxxxxxxxxxxxx 3.429679e-06 0.0001792233 1.147052e-05 I know there is a method for a Python list to return the first index of something:  &gt;&gt;&gt; l = [1, 2, 3] &gt;&gt;&gt; l.index(2) 1   Is there something like that for NumPy arrays? How to configure Jaybird with hibernate Split string on spaces in Java, except if between quotes (i.e. treat \"hello world\" as one token)