forked from Imagelibrary/rtems
05404983e2
* libmisc/shell/main_getenv.c, libmisc/shell/main_setenv.c,
libmisc/shell/main_unsetenv.c: New. The shell can now play with
environment variables.
* libmisc/Makefile.am, libmisc/shell/shellconfig.h: Add setenv,
getenv, and unsetenv to the shell.
50 lines
908 B
C
50 lines
908 B
C
/*
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* Get an environment vairable.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <rtems.h>
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#include <rtems/shell.h>
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#include "internal.h"
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int rtems_shell_main_getenv(int argc, char *argv[])
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{
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char* string;
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if (argc != 2)
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{
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printf ("error: only argument is the variable name\n");
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return 1;
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}
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string = getenv (argv[1]);
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if (!string)
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{
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printf ("error: %s not found\n", argv[1]);
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return 1;
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}
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printf ("%s\n", string);
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return 0;
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}
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rtems_shell_cmd_t rtems_shell_GETENV_Command = {
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"getenv", /* name */
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"getenv [var]", /* usage */
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"misc", /* topic */
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rtems_shell_main_getenv, /* command */
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NULL, /* alias */
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NULL /* next */
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};
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