递归查找字符串（grep -r）

不知道可以grep -r，然后又有需求，又不会shell，只能翻着apue自己用c/c++写了一个。后来man grep了一下，赫然发现grep -r，还比我这个程序快。。。哎，输出懒得优化格式了。

 

#include<iostream>#include<string>#include<dirent.h>#include<string.h>#include<sys/stat.h>#include<stdlib.h>using std::string;using std::cout;using std::endl;void recurgrep(const string& str,const string& path){ string cmd = "grep /""+str+"/""; struct stat statbuf; struct dirent* dirp = NULL; DIR *pDir; pDir = opendir(path.c_str()); if(pDir == NULL) return; while(NULL != (dirp=readdir(pDir))) { if(strcmp(dirp->d_name,".") == 0||strcmp(dirp->d_name,"..")==0) continue; string curpath = path+"/"+dirp->d_name; if(lstat(curpath.c_str(),&statbuf)<0) continue; if(S_ISDIR(statbuf.st_mode) == 0) { string cmd_tmp = cmd+" "+curpath; cout<<"File:"<<curpath<<endl; system(cmd_tmp.c_str()); cout<<endl; } else { recurgrep(str,curpath); } }}int main(int argc,char* argv[]){ if(argc != 3) { cout<<"Usage:recurgrep /"search_str/" /"search_path/"!"<<endl; return 1; } string search_str = argv[1]; string search_path = argv[2]; recurgrep(search_str,search_path); return 0;}