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缘由：
学习需要
正文：
参考解答：
#include <stdlib.h>#include <stdio.h>#ifndef PATH_MAX#define PATH_MAX 128#endifint main(int argc, char const *argv[]){ if(argc < 2) { return 1; } char resolved_path[PATH_MAX]; int i; for(i = 1; i < argc; i++){ realpath(argv[i], resolved_path); printf("%s -> %s\n", argv[i], resolved_path); } return 0;} |
&
#ifndef PATH_MAX#define PATH_MAX 1024#endifint get_path_from_pid (int pid, char path[PATH_MAX]){ char file[PATH_MAX]; snprintf(file, PATH_MAX, "/proc/%d/exe", pid); int len = 0; if ((len = readlink(file, path, PATH_MAX-1)) != -1) { path[len] = '\0'; return 0; } path[0] = '\0'; return -1;} |
参考链接：
- https://stackoverflow.com/questions/2341808/how-to-get-the-absolute-path-for-a-given-relative-path-programmatically-in-linux
- https://stackoverflow.com/questions/229012/getting-absolute-path-of-a-file
- http://man7.org/linux/man-pages/man3/realpath.3.html
- http://man7.org/linux/man-pages/man2/readlink.2.html
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