1 /* env.c - Set the environment for command invocation. 2 * 3 * Copyright 2012 Tryn Mirell <tryn (at) mirell.org> 4 * 5 * http://opengroup.org/onlinepubs/9699919799/utilities/env.html 6 7 USE_ENV(NEWTOY(env, "^iu*", TOYFLAG_USR|TOYFLAG_BIN)) 8 9 config ENV 10 bool "env" 11 default y 12 help 13 usage: env [-i] [-u NAME] [NAME=VALUE...] [command [option...]] 14 15 Set the environment for command invocation. 16 17 -i Clear existing environment. 18 -u NAME Remove NAME from the environment 19 */ 20 21 #define FOR_env 22 #include "toys.h" 23 24 GLOBALS( 25 struct arg_list *u; 26 ); 27 28 extern char **environ; 29 30 void env_main(void) 31 { 32 char **ev; 33 34 if (toys.optflags & FLAG_i) clearenv(); 35 while (TT.u) { 36 unsetenv(TT.u->arg); 37 TT.u = TT.u->next; 38 } 39 40 for (ev = toys.optargs; *ev; ev++) { 41 char *name = *ev, *val = strchr(name, '='); 42 43 if (val) { 44 *(val++) = 0; 45 setenv(name, val, 1); 46 } else xexec(ev); 47 } 48 49 if (environ) for (ev = environ; *ev; ev++) xputs(*ev); 50 } 51
