Write your own shell command du

The du command can view the number of tiles occupied by the specified folder, and the following is the code for the C language implementation of the Shell du Directive under Linux (Support-k option):

#include <stdio.h> #include <sys/types.h> #include <dirent.h> #include <sys/stat.h> #include <string.h>int disk_usage (char *); int k = 0;int main (int Argc,char * argv[]) {int i;for (i = 1;i < argc;i++) {if (         strcmp (Argv[i], "-k") = = 0) {k = 1;    Break }}if (argc = = 1 && k = = 0) disk_usage ("."); else if (argc = = 2 && k = = 1) disk_usage (".");    else{int index = 1;        while (argc > 1) {if (strcmp (Argv[index], "-K")! = 0) disk_usage (Argv[index]);        index++;    argc--; }}return 0;} int Disk_usage (char * pathname) {dir * dir;int sum = 0;struct dirent * direntp;struct stat stat_buffer;if (dir = Opendir (pa Thname)) = = NULL) {perror ("error"); exit (1);} while ((direntp = Readdir (dir)) = NULL) {char absolute_pathname[255];strcpy (absolute_pathname,pathname); Strcat ( Absolute_pathname, "/"); strcat (absolute_pathname,direntp->d_name); if (strcmp (Direntp->d_name, ".") = = 0 | | strcmp (Direntp->d_name, "..") = = 0) {if (strCMP (Direntp->d_name, ".") = = 0) {lstat (absolute_pathname,&stat_buffer); sum = sum + stat_buffer.st_blocks;} Continue;} Lstat (Absolute_pathname,&stat_buffer); if (S_isdir (Stat_buffer.st_mode)) {//sum = sum + stat_buffer.st_blocks;sum = Sum + disk_usage (absolute_pathname);} Else{sum = sum + stat_buffer.st_blocks;}} Lstat (pathname,&stat_buffer);//sum = sum + stat_buffer.st_blocks;if (k = = 0) printf ("%-5.5d%s\n", sum,pathname); elseprintf ("%-5.5d%s\n", sum/2,pathname); return sum;}

Write your own shell command du