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I have tried to create a plugin using Visual studio for mac (addin maker). Locale not supported by C library. Using the fallback 'C' locale. But for a Mac user, I found it somewhat difficult to get started. That El Capitan does no longer support X11. Locale not supported by C library. Verified fixed in master. $ sudo mn -topo single,3 -mac -switch user -innamespace -v output s1 - c0 c0 - s1. Results: 0% dropped (2/2 received) mininet s1 ping -c1 c0 PING 192.168.123.1 (192.168.123.1) 56(84) bytes of data. 64 bytes from 192.168.123.1: icmpseq=1 ttl=64 time=0.050 ms - 192.168.123.1 ping statistics - 1 packets transmitted, 1 received, 0% packet loss, time 0ms rtt.
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6.1 When I launch X11, it quitsor crashes almost immediately
First of all: Don't Panic! There are lots of things than can go wrong with X11, and a good number of them can cause startup failures. Further, it is not unusual that X11 crashes when it experiences startup problems. This section tries to provide a comprehensive list of problems you may come across. But first, you need to gather two important pieces of information:
Display server version. You can find the version of the display server in the Finder by clicking once on the X11 or XQuartz icon and then selecting 'Get Info' from the menu.
Error messages.These are essential in pinpointing the particular problem youexperience.How you get the error messages depends on how you started X11.If you ran
startx
from a Terminal window, you'll have themessages right there in that window.Remember that you can scroll up.If you started X11 by double-clicking the X11 or XQuartz icon, the messages endup in the system log, which you can access through the Consoleapplication in the Utilities folder.Be sure to pick the right set of messages, e.g. the last one.We'll start with a list of the messages you may see:
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Class: Harmless.X11 creates hidden directories in /tmp to store the socket 'files' forlocal connections.For security reasons, X11 prefers if these directories are owned byroot, but since they are world-writable anyway it will still runwithout any problems.(Note: It's quite hard to have these dirs owned by root, as Mac OS Xwipes out /tmp on reboots and X11 doesn't run with root privilegesand doesn't need to.)
Class: Mostly harmless. This issue seems to have no impact on operations. You can get rid of them by running
touch .Xauthority
in your home directory. Class: Harmless.This just means what it says and won't keep the application fromworking.For more information, see below.
Class: Mostly harmless.X11 launches an interactive shell behind the scenesto run your client startup file (.xinitrc).This was done so that you don't have to add statements to set up PATHin that file.Some shells complain that they're not connected to a real terminal,but that can be ignored since that shell instance is not used foranything that requires job control or the like.
Class: Mostly harmless.As the message says, it is not fatal.To my knowledge, X11 on Macs doesn't use the XKB extension at all.Probably some client program tries to use it anyway...
Class: Fatal. This can happen when your shell initialization files are not set up to add the X11 executable directory, e.g.
/usr/X11/bin
, to the PATH variable. Fink is normally set up to do this automatically, so this may indicate that your Fink environment isn't being loaded. Running in a terminal window, and then starting a new window, will typically resolve this.
![Putty Putty](https://user-images.githubusercontent.com/18368538/61833307-49c57100-ae4a-11e9-97bf-3422ec5e42a0.png)
Class: Fatal.This can happen when you accidentally run several instances of X11at once,or maybe after an unclean shutdown (i.e. crash) of X11.It might also be a file permission problem with the sockets for localconnections.You can try to clean that up with
rm -rf /tmp/.X11-unix
.Restarting the computer also helps in most cases (Mac OS Xautomatically cleans up /tmp when it boots, and the network stack isreset).Class: Fatal.The client programs can't connect to the display server (X11 or XQuartz)because they use bogus authentication data.This can be caused by some VNC installations,by running X11-based apps through
sudo
,and probably some other freak accidents.The usual fix is to delete the .Xauthority
file (which stores theauthentication data) in your home directory and re-create an emptyfile:Possibly no obvious error:
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Class: Fatal.Probably the common cause for X11 startup failures is an incorrect startup file.Typically, a window manager listed in
$HOME/.xinitrc
or$HOME/.xinitrc.d
doesn't get run due tohaving been uninstalled, or not being in the PATH, or runs inthe background rather than the foreground due to having an '&' at the end of itsline. In any case, $HOME/.xinitrc
reaches its end, xinit
interprets this as 'the user's session has ended', and kills X11. If the executable cannot be found,there will be an error message to that effect in the terminal window or console log. On the other hand,if the last file has an '&', there will be no error, but X11 will quit.See the sections on .xinitrc.d andthe .xinitrc file for more details.To avoid this, remember to set up the PATH using
in your startup files, and also to end with a long-lived program that isnot started in the background, e.g. a window manager or session manager with no '&'.You might also add
exec xterm
as a fallback for whenyour window manager or other long-lived item can't be found, e.g. if you remove it.6.2 'Warning: locale not supported by C library'
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These messages are quite common, but harmless.It just means what it says - internationalization is not supportedthrough the standard C library, the program will use the defaultEnglish messages, date formats, and so on.There are several ways to deal with this:
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- Just ignore the messages.
- Get rid of the messages by unsetting the environment variable LANG.Note that this will also turn internationalization off in programsthat actually support it (via gettext/libintl).Example for .xinitrc:Example for .cshrc:
- Ask Apple to include proper locale support in a future version of MacOS X.
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