| /* vi: set sw=4 ts=4: |
| * |
| * env.c - Set the environment for command invocation. |
| * |
| * Copyright 2012 Tryn Mirell <tryn@mirell.org> |
| * env.c |
| |
| USE_ENV(NEWTOY(env, "^i", TOYFLAG_USR|TOYFLAG_BIN)) |
| |
| config ENV |
| bool "env" |
| default y |
| help |
| usage: env [-i] [NAME=VALUE...] [command [option...]] |
| |
| Set the environment for command invocation. |
| |
| -i Clear existing environment. |
| */ |
| |
| #include "toys.h" |
| |
| extern char **environ; |
| |
| void env_main(void) |
| { |
| char **ev; |
| char **command = NULL; |
| char *del = "="; |
| |
| if (toys.optflags & 1) clearenv(); |
| |
| for (ev = toys.optargs; *ev != NULL; ev++) { |
| char *env, *val = NULL; |
| |
| env = strtok(*ev, del); |
| |
| if (env) val = strtok(NULL, del); |
| |
| if (val) setenv(env, val, 1); |
| else { |
| command = ev; |
| break; |
| } |
| } |
| |
| if (!command) { |
| char **ep; |
| for (ep = environ; *ep; ep++) xputs(*ep); |
| return; |
| } else xexec(command); |
| } |