glibc提供的取程序名全局变量program_invocation_short_name

 const char* CUtils::get_program_name()
  
 {
 
 //#define _GNU_SOURCE
 
 //#include <errno.h>
 
 			    return program_invocation_name;
 
 }
 
 
 
 const char* CUtils::get_program_short_name()
 
 {
 
 //#define _GNU_SOURCE
 
 //#include <errno.h>
 
 			    return program_invocation_short_name;
 
 } 

 
 效果代码（g++ -g -o x x.cpp）：
 

 //#define _GNU_SOURCE
  
 			#include <errno.h>
 
 			#include <stdio.h>
 
 
 
 int main()
 
 {
 
 			        printf("program_invocation_name: %s\n", program_invocation_name);
 
 			        printf("program_invocation_short_name: %s\n", program_invocation_short_name);
 
 			        return 0;
 
 } 

 
 运行结果：
 # /tmp/X/x
 program_invocation_name: /tmp/X/x
 program_invocation_short_name: x