Need utils: head,yes,& nroff (-man) for SysV2 (CCI 2.21or2.22)

[Keith Bostic]

The BSD version of head(1), while not PD, is freely redistributable.  And
has just recently been cleaned up.  Enjoy.  Forget about sed.

--keith

# This is a shell archive.  Save it in a file, remove anything before
# this line, and then unpack it by entering "sh file".  Note, it may
# create directories; files and directories will be owned by you and
# have default permissions.
#
# This archive contains:
#
#	head.c
#
echo x - head.c
sed 's/^X//' >head.c << 'END-of-head.c'
X/*
X * Copyright (c) 1980, 1987 Regents of the University of California.
X * All rights reserved.
X *
X * Redistribution and use in source and binary forms are permitted
X * provided that the above copyright notice and this paragraph are
X * duplicated in all such forms and that any documentation,
X * advertising materials, and other materials related to such
X * distribution and use acknowledge that the software was developed
X * by the University of California, Berkeley.  The name of the
X * University may not be used to endorse or promote products derived
X * from this software without specific prior written permission.
X * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
X * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
X * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
X */
X
X#ifndef lint
Xchar copyright[] =
X"@(#) Copyright (c) 1980, 1987 Regents of the University of California.\n\
X All rights reserved.\n";
X#endif /* not lint */
X
X#ifndef lint
Xstatic char sccsid[] = "@(#)head.c	5.4 (Berkeley) 6/29/88";
X#endif /* not lint */
X
X#include <stdio.h>
X#include <ctype.h>
X/*
X * head - give the first few lines of a stream or of each of a set of files
X *
X * Bill Joy UCB August 24, 1977
X */
X
Xmain(argc, argv)
X	int	argc;
X	char	**argv;
X{
X	register int	ch, cnt;
X	int	firsttime, linecnt = 10;
X
X	if (argc > 1 && argv[1][0] == '-') {
X		if (!isdigit(argv[1][1])) {
X			fprintf(stderr, "head: illegal option -- %c\n", argv[1][1]);
X			goto usage;
X		}
X		if ((linecnt = atoi(argv[1] + 1)) < 0) {
Xusage:			fputs("usage: head [-line_count] [file ...]\n", stderr);
X			exit(1);
X		}
X		--argc; ++argv;
X	}
X	/* setlinebuf(stdout); */
X	for (firsttime = 1, --argc, ++argv;; firsttime = 0) {
X		if (!*argv) {
X			if (!firsttime)
X				exit(0);
X		}
X		else {
X			if (!freopen(*argv, "r", stdin)) {
X				fprintf(stderr, "head: can't read %s.\n", *argv);
X				exit(1);
X			}
X			if (argc > 1) {
X				if (!firsttime)
X					putchar('\n');
X				printf("==> %s <==\n", *argv);
X			}
X			++argv;
X		}
X		for (cnt = linecnt; cnt; --cnt)
X			while ((ch = getchar()) != EOF)
X				if (putchar(ch) == '\n')
X					break;
X	}
X	/*NOTREACHED*/
X}
END-of-head.c
exit