87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
/*
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* Copyright (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* @file
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* @brief printenv: Print out environment variables
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*/
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#include <common.h>
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#include <command.h>
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#include <errno.h>
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#include <environment.h>
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static int do_printenv(int argc, char *argv[])
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{
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struct variable_d *var;
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struct env_context *c, *current_c;
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if (argc == 2) {
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const char *val = getenv(argv[1]);
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if (val) {
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printf("%s=%s\n", argv[1], val);
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return 0;
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}
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printf("## Error: \"%s\" not defined\n", argv[1]);
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return 1;
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}
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current_c = get_current_context();
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var = current_c->local->next;
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printf("locals:\n");
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while (var) {
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printf("%s=%s\n", var_name(var), var_val(var));
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var = var->next;
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}
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printf("globals:\n");
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c = get_current_context();
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while(c) {
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var = c->global->next;
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while (var) {
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printf("%s=%s\n", var_name(var), var_val(var));
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var = var->next;
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}
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c = c->parent;
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}
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return 0;
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}
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BAREBOX_CMD_HELP_START(printenv)
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BAREBOX_CMD_HELP_USAGE("printenv [variable]\n")
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BAREBOX_CMD_HELP_SHORT("Print value of one or all environment variables.\n")
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BAREBOX_CMD_HELP_END
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/**
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* @page printenv_command
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<p>If an argument is given, printenv prints the content of an environment
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variable to the terminal. If no argument is specified, all variables are
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printed.</p>
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*/
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BAREBOX_CMD_START(printenv)
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.cmd = do_printenv,
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.usage = "Print value of one or all environment variables.",
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BAREBOX_CMD_HELP(cmd_printenv_help)
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BAREBOX_CMD_END
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