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g++ test.cpp -o test
./test
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#include<iostream>
#include<unistd.h>
#include<dirent.h>
#include<string.h>
#include<string>
using namespace std;
int main()
{
 char buff[1024];
 memset(buff,0,sizeof(buff));
 int n = readlink("/proc/self/exe",buff,1023);
 if(n<0)
 {
  cout<<"Get Path failed"<<endl;
  return -1;
 }
 string path = buff;
 int nLen = path.rfind('/');
 path.erase(nLen,path.length() - nLen);
 cout<<"zui zhong lu jing :"<<path<<endl;
 
 return 0;
}
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