ref: 528fa0acfa3532dee4a50fca1ae49d147403edfc
dir: /sys/src/cmd/chgrp.c/
#include <u.h> #include <libc.h> int uflag; void main(int argc, char *argv[]) { int i; Dir dir; char *group; char *errs; ARGBEGIN { default: usage: fprint(2, "usage: chgrp [ -uo ] group file ....\n"); exits("usage"); return; case 'u': case 'o': uflag++; break; } ARGEND if(argc < 1) goto usage; group = argv[0]; errs = 0; for(i=1; i<argc; i++){ nulldir(&dir); if(uflag) dir.uid = group; else dir.gid = group; if(dirwstat(argv[i], &dir) == -1) { fprint(2, "chgrp: can't wstat %s: %r\n", argv[i]); errs = "can't wstat"; continue; } } exits(errs); }