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annotate toys/env.c @ 413:12add511705e

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Add id command from Tim Bird.
author Rob Landley <rob@landley.net>
date Fri, 27 Jan 2012 06:49:28 -0600
parents 55598a9b8f21
children eda61bcf575a
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1 /* vi: set sw=4 ts=4:
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2 * env.c
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3
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4 USE_ENV(NEWTOY(env, "^i", TOYFLAG_USR|TOYFLAG_BIN))
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5
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6 config ENV
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7 bool "env"
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8 default n
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9 help
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10 usage: env [-i] [FOO=BAR...] [command [option...]]
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11
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12 Set the environment for command invocation
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13 */
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14
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15 #include "toys.h"
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16
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17 extern char **environ;
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18
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19 void env_main(void)
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20 {
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21 char **ev;
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22 char **command = NULL;
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23 char *del = "=";
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24
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25 if (toys.optflags & 1) clearenv();
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26
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27 for (ev = toys.optargs; *ev != NULL; ev++) {
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28 char *env, *val = NULL;
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29
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30 env = strtok(*ev, del);
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31
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32 if (env) val = strtok(NULL, del);
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33
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34 if (val) setenv(env, val, 1);
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35 else {
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36 command = ev;
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37 break;
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38 }
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39 }
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40
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41 if (!command) {
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42 char **ep;
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43 for (ep = environ; *ep; ep++)
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44 xputs(*ep);
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45 return;
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46 } else execvp(*command, command);
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47 }