Misc 20130401

• To reset all shortcut definitions in evince, run

  rm ~/.config/evince/accels

• GCC would complain if you define a variable without actually using it. To silience it, use

  (void)var;

• DNS is not working in VirtualBox: Run

  VBoxManage modifyvm "VM name" --natdnshostresolver1 on

  Ref 
• A useful link talking about ravlue reference in C++11 http://thbecker.net/articles/rvalue_references/section_01.html 
• To clear disk cache in Linux: Run

  sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches'

  Ref
•  "screen-256color not found": Run

  infocmp xterm-256color > screen-256color.ti

  on a machine without this error, copy the file to the target machine and then run

  tic screen-256color.ti

  Ref
• Just switch to fcitx from ibus. I like a theme called 'anran'. If fcitx cannot follow the cursor on Firefox, turn on preedit, as said in the official wiki.
• Just played with a vim plugin called youcompleteme, for C++ autocomplete, which is quite powerful. Also I installed vundle, a vim plugin manager.

• To update vimrc just after some modification, run

  so %

杂记 20130401

• 之前evince的快捷键乱套了，使用

  rm ~/.config/evince/accels

  复位
• 定义了变量var又不用的话，gcc会报warning"unused variable"，解法是

  (void)var;

• VirtualBox中DNS不工作：运行

  VBoxManage modifyvm "VM name" --natdnshostresolver1 on

  Ref 
• 一个讲c++11右值引用的link：http://thbecker.net/articles/rvalue_references/section_01.html 
• Linux清除disk cache:

  sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches' 

  Ref
•  遇到错误screen-256color not found需要支持新的终端类型：找一台支持screen-256color的机器执行

  infocmp xterm-256color > screen-256color.ti

  把文件拷贝到目标机器后执行

  tic screen-256color.ti

  Ref

•  最近从ibus换到了fcitx，起初是由于sogou发布了，不过后来还是卸掉了。anran主题不错。fcitx在firefox中光标跟随有点问题，按官方wiki说法打开preedit后就没事了。
•  最近在vim里折腾youcompleteme这个补全插件，挺好用。顺便也装了vundle来管理插件，很不错
•  vim更新.vimrc后想直接应用，执行

  so %