rtnetlink always triger RTM_NEWLINK periodically on wifi interface

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enable wifi lan (wlan0) by wpa_supplicant, but rtnetlink triger NEW_LINK

wpa_supplicant.conf contains a network but cannot access nor connect, wifi would retry periodically, so RTM_NEWOINK with IFLAG =  IFF_UP | IFF_BROADCAST (0x1003) send to userspace periodically with each trial.


  1. revmoe network from default wpa_supplicant.conf
  2. or set autoscan=period:5  (to set the retry time)
  3. or set sched_scan_plans=sec:trial sec:trial …

If sched_scan_plans are configured and supported by the driver, autoscan is ignored.



transfer iOS App distribution privilage.

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1. each distribution certificate binds with a private key which is used to generate the certificate from Keychain.
2. export the private key described with 1.
3. import the exported private key described with 2. in new developer’s Mac OS.
4. new developer should down load the distribution certificate from iOS Dev Center. (of course the developer should be invited as a member of team of development before all).

Mac OS X mavericks with Subversion + Apache

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  1. should rebuild subversion to x86_64 architecture
    • make link for Xcode, because subversion detect build tool chain with a specific rule but Mavericks as no such path for Xcode.

% sudo ln -s /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/  /Applications/Xcode.app/Contents/Developer/Toolchains/OSX10.9.xctoolchain

    • download svn (v1.8.3) download svn 1.6.18 (1.8.3 cannot work)
    • make and make install
% cd ~/Downloads/subversion-1.6.18
% cd ./configure
% make
    • copy mod_authz_svn.so and mod_svn.so to /usr/libexec/apache2 or anywhere you want to locate the module binary files, this would be referenced in httpd_server_app.conf for Web Server.

% cp subversion/mod_dav_svn/.libs/mod_dav_svn.so /usr/libexec/apache2

% cp subversion/mod_authz_svn/.libs/mod_authz_svn.so /usr/libexec/apache2

  1. in /Library/Server/Web/Config/apache2/httpd_server_app.conf
    • add

LoadModule dav_svn_module libexec/apache2/mod_dav_svn.so
LoadModule authz_svn_module libexec/apache2/mod_authz_svn.so

    • notice the order, if mod_dav_svn.so loaded after mod_authz_svn.so, you got the error as launch web server.

httpd: Syntax error on line XXX of /Library/Server/Web/Config/apache2/httpd_server_app.conf: Cannot load /usr/libexec/apache2/mod_authz_svn.so into server: dlopen(/usr/libexec/apache2/mod_authz_svn.so, 10): Symbol not found: _dav_svn_split_uri\n  Referenced from: /usr/libexec/apache2/mod_authz_svn.so\n  Expected in: flat namespace\n in /usr/libexec/apache2/mod_authz_svn.so

Auto increment build number by run script. (Xcode)

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1. to add key in your Project-info.plist
CFBuildNumber, CFBuildDate
2. add scripts to your run script (in Xcode)
CFBuildNumber=$(/usr/libexec/PlistBuddy -c “Print CFBuildNumber" $myPlist)
CFBuildNumber=$(($CFBuildNumber + 1))
/usr/libexec/PlistBuddy -c “Set :CFBuildNumber $CFBuildNumber" $myPlist
/usr/libexec/PlistBuddy -c “Set :CFBuildDate $CFBuildDate" $myPlist
echo “build number: " $CFBuildNumber

3. get info from Project-info.plist and show on somewhere.
NSString * version = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBundleVersion"];
NSString * buildNo = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBuildNumber"];
NSString * buildDate = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"CFBuildDate"];