Using Different Color Schemes with Vim
Hey!
If you have been using the Linux console text editor vim (or: Vi IMproved), you have probably noticed already that at times - especially in files with a large amount of comments - the default color scheme on a black background is less than ideal. Dark blue on black is pretty hard to read and can strain the eyes a lot.
So today I went out to see if somebody had come up with a solution for this particular problem. I saw people who changed console colors by exporting and overwriting certain system variables, and others who edited the default color scheme.
The simplest solution I have found to this problem is just switching the color scheme. You can do that by typing the following in the already open vim session:
:colorscheme desert
where desert is just an example for the scheme of choice. Desert - for me - has just the right color for comments: aquamarine / light blue.
If you are satisfied with the scheme and would like it to be applied each time you launch vim, you can just edit /etc/vim/vimrc (or in my case with CentOS: /etc/vimrc) and add the following line:
colorscheme desert
with desert again, of course, being the chosen color scheme. This would apply this setting automatically for each vim instance that is launched system-wide. If you do not have access to the system-wide preferences or prefer just using it for your own user account, edit the ~/.vimrc instead.
The blog entry I got this tip from (Asher's space) has further instructions on how to edit existing color schemes and even a link to a blog post that explains how to edit the dark blue color for directories in ls listings with color, but I did not feel the need to go that far. If you are interested in that topic I can only encourage you to visit the original post.
Thanks for reading!
Update (2012-01-04):
Okay, looks like pingback isn't working, so here's a direct link to the original blog post:
vi code highlighting: change the default comments color from dark blue to light blue (https://asher2003.wordpress.com/)
Detecting the Linux Distribution / Version
Hi!
Just a quick method to (roughly) detect your linux distribution and version:
$ cat /etc/issue or $ cat /etc/*release
Cheers 🙂
Adobe Premiere Pro CS5 and the Long Loading Splash
Hi!
If you have used Adobe Premiere Pro CS5 (or several other CS5 products as I've read), you might have encountered long waiting times during the program launching. In the case of Premiere Pro CS5, the splash screen shows "Loading ExporterQuickTimeHost.prm" and sticks with it for a couple of minutes (yes, minutes). This is not even a one-time thing or a once-per-Windows-session, it happens each and every program launch.
When I researched this, I quickly found the answer in Adobe's forums: Premiere CS5 takes 5 minutes to start up
In fact, what's causing this is not just the Adobe program, but rather the combination of a firewall and the Adobe program. If you are as restrictive in terms of Internet access as I am, you might have forbidden Adobe Premiere Pro.exe outgoing IP connections altogether. However, it is trying to establish a TCP connection to localhost / 127.0.0.1.
The fix is to allow outgoing TCP (I chose IP, which of course includes TCP) to 127.0.0.1 for the following executables:
- <Premiere Directory>\Adobe Premiere Pro.exe
- <Premiere Directory>\32\Adobe QT32 Server.exe
- <Premiere Directory>\32\dynamiclinkmanager.exe
with <Premiere Directory> of course being the path to your Adobe Premiere directory.
Note: Of course you can still stop every other outgoing traffic. Regard the 127.0.0.1 rule as an exception.
If you are trying to apply this fix to other Adobe programs, you are on your own to find out which .exes require 127.0.0.1 TCP connections. With modern firewalls, however, this shouldn't be that big of a problem. Just look at the prompts your firewall pops up and/or determine the .exes via logging.
I hope that helps you enjoy your respective Adobe program(s) all the more. 🙂
Good luck and, as always, thanks for reading.
Update (2010-03-28):
I recently found out that with my kind of firewall "Adobe Premiere Pro.exe" would prompt me again for a rule for outgoing traffic to addresses different from the localhost zone. If that happens to you, make sure you don't accidentally replace or override the localhost rule you added above. Rather add an additional rule for all the remaining outgoing traffic and forbid it (or allow it, depending on what you want).
Internet Connection Reset on the Speedport W 722V (Type B)
Hi!
Since I've recently found out that my new router, the T-Home Speedport W 722V Type B, apparently does not support automatic disconnecting at a specific time (in order to circumvent the 24-hour connectionreset by my ISP), I took a route that my good friend Pool has been using for quite some time.
It is a batch script, so in order to use it, you have to be able to execute it.
On a side note, the Type A model of this router does support automatic disconnecting! Make sure you choose "Other provider" when you're in the internet configuration menu in order to be able to see the setting for that. The "T-Online" option sadly does not show it.
What you need:
- A Windows machine that is running at the given time (has to execute the script)
- cURL for Windows, preferably the win32-ssl-sspi version (download page). win32-ssl should be fine as well.
- Configure a scheduled task for the script, which is not covered in this guide (but quite simple. Just make it execute the script.)
The batch script:
REM Speedport W 722V Type B Internet Reset Script v1.0 - 2010-04-29 REM Written by pl (plee.me) REM REM Works with the T-Home Speedport W 722V Type B home router. REM START CONFIGURATION REM Adjust these variables to your own ones! SET PWD=12345678 SET COOKIEFILE="routercookies.txt" REM END OF CONFIGURATION @echo off curl -k https://speedport.ip/cgi-bin/login.cgi -d "pws=%PWD%" -e "https://speedport.ip/hcti_start_passwort.stm" -c "%COOKIEFILE%" curl -k https://speedport.ip/cgi-bin/status_startseite.cgi -d "connect=0&disconnect=1&block=0&nonblock=0&abc=0" -e "https://speedport.ip/hcti_startseite.stm" -b "%COOKIEFILE%" curl -k https://speedport.ip/cgi-bin/status_startseite.cgi -d "connect=1&disconnect=0&block=0&nonblock=0&abc=0" -e "https://speedport.ip/hcti_startseite.stm" -b "%COOKIEFILE%" curl -k https://speedport.ip/cgi-bin/logoutall.cgi -e "https://speedport.ip/hcti_startseite.stm" -b "%COOKIEFILE%" del "%COOKIEFILE%"
What this script does:
It logs on the web administration interface, uses a hidden option to disconnect the internet connection, then uses a hidden option to connect, and finally logs out again.
Because the cookie is cached in a text file, it is deleted at the end of the script.
Additional information:
The lines beginning with REM are comments, so you might as well leave them out.
If you run the script, make sure that you either have the cURL directory in the PATH environment variable, or that you set its folder as the working directory, so that it can find the curl.exe and actually execute the (central) steps of the script.
I'm sure that this script can be optimized (probably a lot), but for now, it's doing the job.
I hope that was of any help to you, and thanks for reading! 🙂
OpenVPN on Windows Vista / 7 – Ping says: TTL expired in transit
Hi there!
When I set up my VPN with OpenVPN yesterday, I found out about a little difficulty under Windows Vista and 7. Thankfully it was not that much of a hurdle as the UAC was the reason for this bug just like for a series of other bugs with different software I experimented with over the last few weeks. Nevertheless I hope that this piece of information helps you get rid of the following problem.
If you have set up your VPN and got it running without any major problems, and everything seems to be running just fine (connecting works), but you still can't establish connections to the other machines, you might find that pinging returns the error message "TTL expired in transit". This is due to the fact that Vista (or Windows 7) needs administrator privileges to adjust your computer's settings properly in order to function when you've connected to the VPN successfully. I think it's about the route.exe process, but I'm not 100% sure.
Windows Vista and 7 have the equally famous as infamous UAC (User Account Control) that prevents even administrator privileged accounts from executing programs with administrator rights by default. In order to enable these rights you have to right-click the program (or program shortcut) and click on "Run as administrator" next to the yellow-blue shield if it does not run with administrator rights exclusively anyway (in which case you'd see the yellow-blue shield in the bottom right corner of the program icon itself and would be asked for administrator privileges automatically when you launch it as any other program).
Please note that the following steps are for on-demand OpenVPN connections. For automatic connections, read further below.
OpenVPN on-demand connection
So what you need to do is launch the connection with UAC. But how do you do that if you usually launch OpenVPN connections with a right-click and "Start OpenVPN on this config file"? Even creating a shortcut to the .ovpn file doesn't give you the "Run as administrator" option.
A simple solution is to create a batch file that simply changes to the work directory and executes .ovpn with the openvpn.exe.
Example file "ovpn_connection1.bat":
@echo off D: cd \Programs\OpenVPN\config-ondemand\ D:\Programs\OpenVPN\bin\openvpn.exe D:\Programs\OpenVPN\config-ondemand\connection1.ovpn
This batch file has the following parameters/assumptions:
- Your OpenVPN dir is on the D: partition (otherwise change the drive letter in the respective paths and leave the "D:" line out altogether).
- The path to your OpenVPN dir is D:\Programs\OpenVPN.
- Your connection configuration file is located in the config-ondemand subdirectory.
Basically, you just switch to the work directory and execute OpenVPN's openvpn.exe located in its bin dir on the configuration. In a way, this works as a shortcut, but just as an executable batch.
The @echo off part is just so that you won't see the other commands displayed in the window each time you start the connection.
Now you either make a shortcut to this batch file or use it itself.
Whenever you want to start the connection, right-click on it and select "Run as administrator".
Done! Test your ping and it should be fine.
OpenVPN automatic connection
All you need to do is to move the .ovpn configuration file and all the other required files into the config subdirectory of your OpenVPN installation.
When the OpenVPN service (Start => Run => services.msc) is started, it will look for .ovpn files in its config subdirectory and execute them all - with SYSTEM privileges. No UAC circumvention needed.
So just set your OpenVPN service to "Automatic" and you're good to go!
OpenVPN on-demand connection with OpenVPN service
Just do what is described under the "OpenVPN automatic connection" paragraph except for setting the service to "Manual".
Now each time you want to launch the connection, you just need to type "net start OpenVPNService". To stop it, type "net stop OpenVPNService".
Note on using connections with the OpenVPN service
As the OpenVPN service feature executes *all* .ovpn configuration in the config subdirectory, there is no way to manually interfere with one particular connection of that directory and let's say disable it shortly. All config-connections are handled as a group with the OpenVPN service.
So if you need manual independency, look at the on-demand section.
I hope this wasn't all too fuzzy with the wordings and such.
Please comment or contact me if you have any questions on this matter.
Thanks for reading!
Disabling Windows Vista / 7 / 8 / 10 Explorer’s Automatic Folder Type Discovery
Hey!
Update from 2015-09-06: I just used this for Windows 10 and it still works!
I very recently installed Windows 7 on my desktop computer and I'm loving it so far.
One of the major things that bugged me though was the new Explorer behavior. The automatic folder type discovery just goes ahead and tries to determine a folder type just by looking at how many (or if there are) files of a certain type (pictures, videos, songs, ...) are in the current folder, and then it adjusts the viewing settings accordingly. For example, if you open a folder that contains mainly video files, it would show those with big icons instead of my default, a detailed list. Pictures are displayed as thumbnails.
Disabling this behavior proved to be interestingly difficult. As with most things that have been declared a default setting by Microsoft, it luckily can be done - but only via registry.
First we need to delete our current folder type settings.
- Close all open Explorer windows.
- Open the registry editor with Start => Run => regedit and browse to HKEY_CURRENT_USER\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell.
- Delete and confirm the deletion of the keys BagMRU and Bags.
- Now create a Key (right-click on the current key in the left pane and select New => Key) called Bags.
- Create a subkey for Bags called AllFolders.
- Create a subkey for AllFolders called Shell.
- Create a String value (right-click in the right pane and select New => String Value) called FolderType and set the value to NotSpecified.
- That's it for Windows 7. Please read the note for Windows Vista x64 below. Otherwise, just reboot and your new settings should be applied.
That's it for Windows 7. If you're using Windows Vista x64, it might be possible that there is a copy of (or a similar) the Local Settings\Software\Microsoft\Windows\Shell key in HKEY_CURRENT_USER\Software\Classes\Wow6432Node. I could not confirm this for Windows 7, though I am using the 64 bit version (it just had a CLSID subkey, nothing more). In that case, delete the Shell\Bags and Shell\BagMRU folders like I told you above before finishing your modifications with a reboot.
Warning: as always, playing around with the Windows registry can be dangerous when done incorrectly. If you do not feel safe about it, make sure to back up the keys you're about to modify via File => Export, or leave it altogether. I do not take any responsibility for any damage, nor do I give any guarantee that the steps I provided here will work for you. At least they worked for me.
Hopefully that was of help to you 🙂
I discovered the initial instructions on mydigitallife.info. Thank's so much 🙂 Had a hard time finding a guide for that.
Compiling Exim and MySQL on a (CentOS) 64 bit Environment
Hey there!
I was recently trying to compile Exim with MySQL support on a CentOS 5.x 64 bit system. However, I had my dear share of trouble when it came to adjust the Local/Makefile for the 64 bit architecture.
The following error was what I got stuck on:
...
gcc dkim-exim.c
awk '{ print ($1+1) }' cnumber.h > cnumber.temp
rm -f cnumber.h; mv cnumber.temp cnumber.h
gcc version.c
rm -f exim
gcc -o exim
/usr/bin/ld: cannot find -lmysqlclient
collect2: ld returned 1 exit status
make[1]: *** [exim] Error 1
make[1]: Leaving directory `/root/incoming/exim-4.69/build-Linux-x86_64'
make: *** [go] Error 2
Turns out it was easier to solve than I thought. The point was that it was looking for 32 bit libraries where it should have been looking for 64 bit ones. I adjusted the following lines in Local/Makefile:
LOOKUP_INCLUDE=-I /usr/include/mysql LOOKUP_LIBS=-L/usr/lib/mysql -lmysqlclient -lz -lm
to say this:
LOOKUP_INCLUDE=-I /usr/include/mysql LOOKUP_LIBS=-L/usr/lib64/mysql -lmysqlclient -lz -lm
And - hurray! - it works 🙂
Be careful though, it seems to need the /mysql after /usr/lib64.