diff options
| -rw-r--r-- | coreutils/Config.in | 6 | ||||
| -rw-r--r-- | coreutils/Makefile.in | 1 | ||||
| -rw-r--r-- | coreutils/printenv.c | 52 |
3 files changed, 59 insertions, 0 deletions
diff --git a/coreutils/Config.in b/coreutils/Config.in index a299506e6..466e8b880 100644 --- a/coreutils/Config.in +++ b/coreutils/Config.in @@ -164,6 +164,12 @@ config CONFIG_ENV a command; without options it displays the current environment. +config CONFIG_PRINTENV + bool "printenv" + default n + help + printenv is used to print all or part of environment. + config CONFIG_EXPR bool "expr" default n diff --git a/coreutils/Makefile.in b/coreutils/Makefile.in index 1a4872f66..130bdf48b 100644 --- a/coreutils/Makefile.in +++ b/coreutils/Makefile.in @@ -60,6 +60,7 @@ COREUTILS-$(CONFIG_MKNOD) += mknod.o COREUTILS-$(CONFIG_MV) += mv.o COREUTILS-$(CONFIG_NICE) += nice.o COREUTILS-$(CONFIG_OD) += od.o +COREUTILS-$(CONFIG_PRINTENV) += printenv.o COREUTILS-$(CONFIG_PRINTF) += printf.o COREUTILS-$(CONFIG_PWD) += pwd.o COREUTILS-$(CONFIG_REALPATH) += realpath.o diff --git a/coreutils/printenv.c b/coreutils/printenv.c new file mode 100644 index 000000000..10f9dd22a --- /dev/null +++ b/coreutils/printenv.c @@ -0,0 +1,52 @@ +/* + * printenv implementation for busybox + * + * Copyright (C) 2005 by Erik Andersen <andersen@codepoet.org> + * Copyright (C) 2005 by Mike Frysinger <vapier@gentoo.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +int printenv_main(int argc, char **argv) +{ + extern char **environ; + int e = 0; + + /* no variables specified, show whole env */ + if (argc == 1) + while (environ[e]) + puts(environ[e++]); + + /* search for specified variables and print them out if found */ + else { + int i; + size_t l; + char *arg, *env; + + for (i=1; (arg = argv[i]); ++i) + for (; (env = environ[e]); ++e) { + l = strlen(arg); + if (!strncmp(env, arg, l) && env[l] == '=') + puts(env + l + 1); + } + } + + exit(EXIT_SUCCESS); +} |