40 lines
529 B
C
40 lines
529 B
C
/* See LICENSE file for copyright and license details. */
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#include <stdio.h>
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#include <stdlib.h>
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#include "util.h"
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extern char **environ;
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static void
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usage(void)
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{
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eprintf("usage: %s [var ...]\n", argv0);
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}
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int
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main(int argc, char *argv[])
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{
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char *var;
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int ret = 0;
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ARGBEGIN {
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default:
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usage();
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} ARGEND;
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if (!argc) {
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while (*environ)
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printf("%s\n", *environ++);
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} else {
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for (; argc > 0; argc--, argv++) {
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if ((var = getenv(*argv)))
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printf("%s\n", var);
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else
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ret = 1;
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}
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}
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return ret;
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}
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