gtags and global

Refer from: GNU Global

1. Generate gtags for source code

  $ cd $source_folder
  $ gtags

  $ ls G*

    GPATH   GRTAGS  GTAGS

  Definitions:

• `GTAGS' definition database
• `GRTAGS' reference database
• `GPATH' path name database
• 
  

2. lookup a certain FUNCNAME definitions

  $ global FUNCNAME --> show up a path/xxx.c which defines FUNCNAME

3. lookup a certain FUNCNAME references

  $ global -r FUNCNAME 

  $ global -rx FUNCNAME --> 'x' option will show details.

4. lookup a pattern PATTERN

  $ global -go PATTERN --> search PATTERN in source codes and text files.

  $ global -gO PATTERN --> search PATTERN only in text files.

  $ global -g1 PATTERN --> search PATTERN in current directory