Emacs commands

1. Search
• forward searching: C-s
• backward searching: C-r
• quit searching: ret or C-a
• finding the next/previous: repeat C-s or C-r
2. How to use emacs to compile and run C/C++ files
1. compile the source code: "M-x compile", first; and then "g++ hello.cpp -o hello"
2. open the shell window to run: "M-x shell" or "M-x eshell"; and then "./hello"
3. go back to the source code window: "C-x b"
4. get away of the minibuffer: "C-g"
5. clear some minibuffer: "C-x k"
6. only keep the window where the cursor is: "C-x 1"
7. switch between windows: "C-x o"
3. How to use etags
• generate the TAGS file: $ etags `find . -name "*.c" -o -name "*.cpp" -o -name "*.h"`
• let emacs know about this TAGS file: M-x visit-tag-table [location of the TAGS file]