| /* env.c - Set the environment for command invocation. |
| * |
| * Copyright 2012 Tryn Mirell <tryn@mirell.org> |
| * |
| * http://opengroup.org/onlinepubs/9699919799/utilities/env.html |
| |
| 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; |
| |
| if (toys.optflags) clearenv(); |
| |
| for (ev = toys.optargs; *ev; ev++) { |
| char *name = *ev, *val = strchr(name, '='); |
| |
| if (val) { |
| *(val++) = 0; |
| if (*val) setenv(name, val, 1); |
| else unsetenv(name); |
| } else xexec(ev); |
| } |
| |
| if (environ) for (ev = environ; *ev; ev++) xputs(*ev); |
| } |