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comparison toys/other/printenv.c @ 653:2986aa63a021

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Move commands into "posix", "lsb", and "other" menus/directories.
author Rob Landley <rob@landley.net>
date Sat, 25 Aug 2012 14:25:22 -0500
parents toys/printenv.c@e0eed40f4ab1
children 6df4ccc0acbe
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equal deleted inserted replaced
652:2d7c56913fda 653:2986aa63a021
1 /* vi: set sw=4 ts=4:
2 *
3 * printenv.c - Print environment variables.
4 *
5 * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org>
6 *
7
8 USE_PRINTENV(NEWTOY(printenv, "0(null)", TOYFLAG_USR|TOYFLAG_BIN))
9
10 config PRINTENV
11 bool "printenv"
12 default y
13 help
14 usage: printenv [-0] [env_var...]
15
16 Print environment variables.
17
18 -0 Use \0 as delimiter instead of \n
19 */
20
21 #include "toys.h"
22
23 extern char **environ;
24
25 void printenv_main(void)
26 {
27 char **env, **var = toys.optargs;
28 char delim = '\n';
29
30 if (toys.optflags) delim = 0;
31
32 do {
33 int catch = 0, len = *var ? strlen(*var) : 0;
34
35 for (env = environ; *env; env++) {
36 char *out = *env;
37 if (*var) {
38 if (!strncmp(out, *var, len) && out[len] == '=')
39 out += len +1;
40 else continue;
41 }
42 xprintf("%s%c", out, delim);
43 catch++;
44 }
45 if (*var && !catch) toys.exitval = 1;
46 } while (*var && *(++var));
47 }