diff options
Diffstat (limited to 'usr.bin/env')
| -rw-r--r-- | usr.bin/env/Makefile | 6 | ||||
| -rw-r--r-- | usr.bin/env/env.c | 82 |
2 files changed, 88 insertions, 0 deletions
diff --git a/usr.bin/env/Makefile b/usr.bin/env/Makefile new file mode 100644 index 0000000..6b67b73 --- /dev/null +++ b/usr.bin/env/Makefile @@ -0,0 +1,6 @@ +# @(#)Makefile 8.1 (Berkeley) 6/6/93 + +PROG= env +NOMAN= noman + +.include <bsd.prog.mk> diff --git a/usr.bin/env/env.c b/usr.bin/env/env.c new file mode 100644 index 0000000..2c72ddb --- /dev/null +++ b/usr.bin/env/env.c @@ -0,0 +1,82 @@ +/* + * Copyright (c) 1988, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char copyright[] = +"@(#) Copyright (c) 1988, 1993, 1994\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)env.c 8.3 (Berkeley) 4/2/94"; +#endif /* not lint */ + +#include <err.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> +#include <unistd.h> + +extern char **environ; + +int +main(argc, argv) + int argc; + char **argv; +{ + char **ep, *p; + char *cleanenv[1]; + int ch; + + while ((ch = getopt(argc, argv, "-")) != EOF) + switch(ch) { + case '-': + environ = cleanenv; + cleanenv[0] = NULL; + break; + case '?': + default: + (void)fprintf(stderr, + "usage: env [-] [name=value ...] [command]\n"); + exit(1); + } + for (argv += optind; *argv && (p = strchr(*argv, '=')); ++argv) + (void)setenv(*argv, ++p, 1); + if (*argv) { + execvp(*argv, argv); + err(1, "%s", *argv); + } + for (ep = environ; *ep; ep++) + (void)printf("%s\n", *ep); + exit(0); +} |
