/* who.c - display who is on the system * * Copyright 2012 ProFUSION Embedded Systems * * by Luis Felipe Strano Moraes <lfelipe@profusion.mobi> * * See http://opengroup.org/onlinepubs/9699919799/utilities/who.html * * Posix says to support many options (-abdHlmpqrstTu) but this * isn't aimed at minicomputers with modem pools. USE_WHO(NEWTOY(who, "a", TOYFLAG_BIN)) config WHO bool "who" default y help usage: who Print logged user information on system */ #define FOR_who #include "toys.h" void who_main(void) { struct utmpx *entry; setutxent(); while ((entry = getutxent())) { if ((toys.optflags & FLAG_a) || entry->ut_type == USER_PROCESS) { time_t time; int time_size; char *times; time = entry->ut_tv.tv_sec; times = ctime(&time); time_size = strlen(times) - 2; printf("%s\t%s\t%*.*s\t(%s)\n", entry->ut_user, entry->ut_line, time_size, time_size, ctime(&time), entry->ut_host); } } endutxent(); }