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/* 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;
char **command = NULL;
char *del = "=";
if (toys.optflags) 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;
if (environ) for (ep = environ; *ep; ep++) xputs(*ep);
} else xexec_optargs(command - toys.optargs);
}
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