* added (and documented) "-n" option for head -

contributed Friedrich Vedder <fwv@myrtle.lahn.de>
* Cleanup for a number of usage messages -- also
    contributed Friedrich Vedder <fwv@myrtle.lahn.de>
 -Erik
This commit is contained in:
Erik Andersen 2000-01-23 18:19:02 +00:00
parent 9bc7e89fc1
commit 5509af7073
21 changed files with 110 additions and 105 deletions

View File

@ -15,6 +15,10 @@
* Optional support contributed by Ben Collins <bcollins@debian.org>
for the kernel init chroot patch by Werner Almesberger, which
allows init to chroot to a new device, and umount the old one.
* added (and documented) "-n" option for head -
contributed Friedrich Vedder <fwv@myrtle.lahn.de>
* Cleanup for a number of usage messages -- also
contributed Friedrich Vedder <fwv@myrtle.lahn.de>
* Fixed bug that wouldn't let one chown a symlink -- it would
always dereference before. -beppu

View File

@ -54,7 +54,7 @@ static const char tar_usage[] =
#else
static const char tar_usage[] =
"tar -[cxtvOf] [tarFileName] [FILE] ...\n\n"
"tar -[xtvOf] [tarFileName] [FILE] ...\n\n"
"Extract, or list files stored in a tar file. This\n"
"version of tar does not support creation of tar files.\n\n"
"Options:\n"

View File

@ -35,7 +35,7 @@
typedef void (Display)(size_t, char *);
static const char du_usage[] =
"Usage: du [OPTION]... [FILE]...\n\n"
"du [OPTION]... [FILE]...\n\n"
"\t-s\tdisplay only a total for each argument\n"
;
@ -140,4 +140,4 @@ du_main(int argc, char **argv)
exit(0);
}
/* $Id: du.c,v 1.8 1999/12/17 18:44:15 erik Exp $ */
/* $Id: du.c,v 1.9 2000/01/23 18:19:02 erik Exp $ */

View File

@ -26,10 +26,12 @@
#include <stdio.h>
const char head_usage[] =
"Usage: head [FILE]...\n\n"
"head [OPTION] [FILE]...\n\n"
"Print first 10 lines of each FILE to standard output.\n"
"With more than one FILE, precede each with a header giving the\n"
"file name. With no FILE, or when FILE is -, read standard input.\n";
"file name. With no FILE, or when FILE is -, read standard input.\n\n"
"Options:\n"
"\t-n NUM\t\tPrint first NUM lines instead of first 10\n";
int
head(int len, FILE *src)
@ -49,22 +51,22 @@ head(int len, FILE *src)
int
head_main(int argc, char **argv)
{
int i = 1;
char opt;
int len = 10;
/* 1st option is potentially special */
if ((argc > 1) && (argv[1][0] == '-') && isDecimal(argv[1][1])) {
int tmplen = atoi(&argv[1][1]);
if (tmplen) { len = tmplen; }
i = 2;
}
int len = 10, tmplen, i;
/* parse argv[] */
for ( ; i < argc; i++) {
for (i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
opt = argv[i][1];
switch (opt) {
case 'n':
tmplen = 0;
if (i++ < argc)
tmplen = atoi(argv[i]);
if (tmplen < 1)
usage(head_usage);
len = tmplen;
break;
case '-':
case 'h':
usage(head_usage);
@ -103,4 +105,4 @@ head_main(int argc, char **argv)
exit(0);
}
/* $Id: head.c,v 1.4 1999/12/17 18:52:06 erik Exp $ */
/* $Id: head.c,v 1.5 2000/01/23 18:19:02 erik Exp $ */

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@ -26,7 +26,8 @@
#include <errno.h>
#include <sys/param.h>
static const char mkdir_usage[] = "Usage: mkdir [OPTION] DIRECTORY...\n\n"
static const char mkdir_usage[] =
"mkdir [OPTION] DIRECTORY...\n\n"
"Create the DIRECTORY(ies), if they do not already exist\n\n"
"Options:\n"
"\t-m\tset permission mode (as in chmod), not rwxrwxrwx - umask\n"

View File

@ -29,7 +29,7 @@
#include <errno.h>
static const char sort_usage[] =
"Usage: sort [OPTION]... [FILE]...\n\n"
"sort [OPTION]... [FILE]...\n\n"
;
/* typedefs _______________________________________________________________ */
@ -309,4 +309,4 @@ sort_main(int argc, char **argv)
exit(0);
}
/* $Id: sort.c,v 1.8 1999/12/23 22:46:10 beppu Exp $ */
/* $Id: sort.c,v 1.9 2000/01/23 18:19:02 erik Exp $ */

View File

@ -27,7 +27,7 @@
#include <errno.h>
static const char uniq_usage[] =
"Usage: uniq [OPTION]... [INPUT [OUTPUT]]\n"
"uniq [OPTION]... [INPUT [OUTPUT]]\n"
"Discard all but one of successive identical lines from INPUT (or\n"
"standard input), writing to OUTPUT (or standard output).\n"
"\n"
@ -193,4 +193,4 @@ uniq_main(int argc, char **argv)
exit(0);
}
/* $Id: uniq.c,v 1.4 2000/01/07 01:57:32 beppu Exp $ */
/* $Id: uniq.c,v 1.5 2000/01/23 18:19:02 erik Exp $ */

View File

@ -28,7 +28,6 @@ static const char wc_usage[] = "wc [OPTION]... [FILE]...\n\n"
"\t-c\tprint the byte counts\n"
"\t-l\tprint the newline counts\n"
"\t-L\tprint the length of the longest line\n"
"\t-L\tprint the length of the longest line\n"
"\t-w\tprint the word counts\n";
static int total_lines, total_words, total_chars, max_length;

4
du.c
View File

@ -35,7 +35,7 @@
typedef void (Display)(size_t, char *);
static const char du_usage[] =
"Usage: du [OPTION]... [FILE]...\n\n"
"du [OPTION]... [FILE]...\n\n"
"\t-s\tdisplay only a total for each argument\n"
;
@ -140,4 +140,4 @@ du_main(int argc, char **argv)
exit(0);
}
/* $Id: du.c,v 1.8 1999/12/17 18:44:15 erik Exp $ */
/* $Id: du.c,v 1.9 2000/01/23 18:19:02 erik Exp $ */

28
head.c
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@ -26,10 +26,12 @@
#include <stdio.h>
const char head_usage[] =
"Usage: head [FILE]...\n\n"
"head [OPTION] [FILE]...\n\n"
"Print first 10 lines of each FILE to standard output.\n"
"With more than one FILE, precede each with a header giving the\n"
"file name. With no FILE, or when FILE is -, read standard input.\n";
"file name. With no FILE, or when FILE is -, read standard input.\n\n"
"Options:\n"
"\t-n NUM\t\tPrint first NUM lines instead of first 10\n";
int
head(int len, FILE *src)
@ -49,22 +51,22 @@ head(int len, FILE *src)
int
head_main(int argc, char **argv)
{
int i = 1;
char opt;
int len = 10;
/* 1st option is potentially special */
if ((argc > 1) && (argv[1][0] == '-') && isDecimal(argv[1][1])) {
int tmplen = atoi(&argv[1][1]);
if (tmplen) { len = tmplen; }
i = 2;
}
int len = 10, tmplen, i;
/* parse argv[] */
for ( ; i < argc; i++) {
for (i = 1; i < argc; i++) {
if (argv[i][0] == '-') {
opt = argv[i][1];
switch (opt) {
case 'n':
tmplen = 0;
if (i++ < argc)
tmplen = atoi(argv[i]);
if (tmplen < 1)
usage(head_usage);
len = tmplen;
break;
case '-':
case 'h':
usage(head_usage);
@ -103,4 +105,4 @@ head_main(int argc, char **argv)
exit(0);
}
/* $Id: head.c,v 1.4 1999/12/17 18:52:06 erik Exp $ */
/* $Id: head.c,v 1.5 2000/01/23 18:19:02 erik Exp $ */

View File

@ -26,6 +26,7 @@
#include "busybox.def.h"
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
@ -174,7 +175,7 @@ extern int check_wildcard_match(const char* text, const char* pattern);
extern long getNum (const char *cp);
extern pid_t findInitPid();
#if (__GLIBC__ < 2) && defined BB_SYSLOGD
#if (__GLIBC__ < 2) && (defined BB_SYSLOGD || defined BB_INIT)
extern int vdprintf(int d, const char *format, va_list ap);
#endif

View File

@ -26,7 +26,8 @@
#include <errno.h>
#include <sys/param.h>
static const char mkdir_usage[] = "Usage: mkdir [OPTION] DIRECTORY...\n\n"
static const char mkdir_usage[] =
"mkdir [OPTION] DIRECTORY...\n\n"
"Create the DIRECTORY(ies), if they do not already exist\n\n"
"Options:\n"
"\t-m\tset permission mode (as in chmod), not rwxrwxrwx - umask\n"

52
mount.c
View File

@ -428,44 +428,42 @@ static int set_loop(const char *device, const char *file, int offset, int *loopr
loopinfo.lo_encrypt_key_size = 0;
if (ioctl(fd, LOOP_SET_FD, ffd) < 0) {
perror("ioctl: LOOP_SET_FD");
exit(1);
close(fd);
close(ffd);
return 1;
}
if (ioctl(fd, LOOP_SET_STATUS, &loopinfo) < 0) {
(void) ioctl(fd, LOOP_CLR_FD, 0);
perror("ioctl: LOOP_SET_STATUS");
exit(1);
close(fd);
close(ffd);
return 1;
}
close(fd);
close(ffd);
return 0;
}
static char *find_unused_loop_device (void)
char *find_unused_loop_device (void)
{
char dev[20];
int i, fd, somedev = 0, someloop = 0;
struct stat statbuf;
struct loop_info loopinfo;
char dev[20];
int i, fd;
struct stat statbuf;
struct loop_info loopinfo;
for(i = 0; i < 256; i++) {
sprintf(dev, "/dev/loop%d", i);
if (stat (dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
somedev++;
fd = open (dev, O_RDONLY);
if (fd >= 0) {
if(ioctl (fd, LOOP_GET_STATUS, &loopinfo) == 0)
someloop++; /* in use */
else if (errno == ENXIO) {
close (fd);
return strdup(dev); /* probably free */
}
close (fd);
}
continue;
}
if (i >= 7)
break;
}
return NULL;
for(i = 0; i <= 7; i++) {
sprintf(dev, "/dev/loop%d", i);
if (stat (dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
if ((fd = open (dev, O_RDONLY)) >= 0) {
if(ioctl (fd, LOOP_GET_STATUS, &loopinfo) == -1 &&
errno == ENXIO) { /* probably free */
close (fd);
return strdup(dev);
}
close (fd);
}
}
}
return NULL;
}
#endif /* BB_FEATURE_MOUNT_LOOP */

View File

@ -55,7 +55,7 @@
static const char sfdisk_usage[] =
"Usage: sfdisk [options] device ...\n"
"sfdisk [options] device ...\n"
"device: something like /dev/hda or /dev/sda\n"
"useful options:\n"
" -s [or --show-size]: list size of a partition\n"
@ -2345,7 +2345,7 @@ sfdisk_main(int argc, char **argv) {
char *unhidearg = 0;
if (argc < 1)
usage( sfdisk_usage);
usage(sfdisk_usage);
while ((c = getopt_long (argc, argv, short_opts, long_opts, NULL)) != -1) {
switch (c) {
@ -2407,7 +2407,7 @@ sfdisk_main(int argc, char **argv) {
verify = 1; break;
case '?':
default:
usage( sfdisk_usage);
usage(sfdisk_usage);
/* undocumented flags */
case 128:
@ -2461,7 +2461,7 @@ sfdisk_main(int argc, char **argv) {
exit(exit_status);
}
if (optind == argc) usage( sfdisk_usage);
if (optind == argc) usage(sfdisk_usage);
if (opt_list || opt_out_geom || opt_size || verify) {
while (optind < argc) {

4
sort.c
View File

@ -29,7 +29,7 @@
#include <errno.h>
static const char sort_usage[] =
"Usage: sort [OPTION]... [FILE]...\n\n"
"sort [OPTION]... [FILE]...\n\n"
;
/* typedefs _______________________________________________________________ */
@ -309,4 +309,4 @@ sort_main(int argc, char **argv)
exit(0);
}
/* $Id: sort.c,v 1.8 1999/12/23 22:46:10 beppu Exp $ */
/* $Id: sort.c,v 1.9 2000/01/23 18:19:02 erik Exp $ */

2
tar.c
View File

@ -54,7 +54,7 @@ static const char tar_usage[] =
#else
static const char tar_usage[] =
"tar -[cxtvOf] [tarFileName] [FILE] ...\n\n"
"tar -[xtvOf] [tarFileName] [FILE] ...\n\n"
"Extract, or list files stored in a tar file. This\n"
"version of tar does not support creation of tar files.\n\n"
"Options:\n"

View File

@ -37,7 +37,7 @@ static int del_loop(const char *device);
#endif
static const char umount_usage[] =
"Usage: umount [flags] filesystem|directory\n\n"
"umount [flags] filesystem|directory\n\n"
"Flags:\n"
"\t-a:\tUnmount all file systems"
#ifdef BB_MTAB

4
uniq.c
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@ -27,7 +27,7 @@
#include <errno.h>
static const char uniq_usage[] =
"Usage: uniq [OPTION]... [INPUT [OUTPUT]]\n"
"uniq [OPTION]... [INPUT [OUTPUT]]\n"
"Discard all but one of successive identical lines from INPUT (or\n"
"standard input), writing to OUTPUT (or standard output).\n"
"\n"
@ -193,4 +193,4 @@ uniq_main(int argc, char **argv)
exit(0);
}
/* $Id: uniq.c,v 1.4 2000/01/07 01:57:32 beppu Exp $ */
/* $Id: uniq.c,v 1.5 2000/01/23 18:19:02 erik Exp $ */

View File

@ -428,44 +428,42 @@ static int set_loop(const char *device, const char *file, int offset, int *loopr
loopinfo.lo_encrypt_key_size = 0;
if (ioctl(fd, LOOP_SET_FD, ffd) < 0) {
perror("ioctl: LOOP_SET_FD");
exit(1);
close(fd);
close(ffd);
return 1;
}
if (ioctl(fd, LOOP_SET_STATUS, &loopinfo) < 0) {
(void) ioctl(fd, LOOP_CLR_FD, 0);
perror("ioctl: LOOP_SET_STATUS");
exit(1);
close(fd);
close(ffd);
return 1;
}
close(fd);
close(ffd);
return 0;
}
static char *find_unused_loop_device (void)
char *find_unused_loop_device (void)
{
char dev[20];
int i, fd, somedev = 0, someloop = 0;
struct stat statbuf;
struct loop_info loopinfo;
char dev[20];
int i, fd;
struct stat statbuf;
struct loop_info loopinfo;
for(i = 0; i < 256; i++) {
sprintf(dev, "/dev/loop%d", i);
if (stat (dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
somedev++;
fd = open (dev, O_RDONLY);
if (fd >= 0) {
if(ioctl (fd, LOOP_GET_STATUS, &loopinfo) == 0)
someloop++; /* in use */
else if (errno == ENXIO) {
close (fd);
return strdup(dev); /* probably free */
}
close (fd);
}
continue;
}
if (i >= 7)
break;
}
return NULL;
for(i = 0; i <= 7; i++) {
sprintf(dev, "/dev/loop%d", i);
if (stat (dev, &statbuf) == 0 && S_ISBLK(statbuf.st_mode)) {
if ((fd = open (dev, O_RDONLY)) >= 0) {
if(ioctl (fd, LOOP_GET_STATUS, &loopinfo) == -1 &&
errno == ENXIO) { /* probably free */
close (fd);
return strdup(dev);
}
close (fd);
}
}
}
return NULL;
}
#endif /* BB_FEATURE_MOUNT_LOOP */

View File

@ -37,7 +37,7 @@ static int del_loop(const char *device);
#endif
static const char umount_usage[] =
"Usage: umount [flags] filesystem|directory\n\n"
"umount [flags] filesystem|directory\n\n"
"Flags:\n"
"\t-a:\tUnmount all file systems"
#ifdef BB_MTAB

1
wc.c
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@ -28,7 +28,6 @@ static const char wc_usage[] = "wc [OPTION]... [FILE]...\n\n"
"\t-c\tprint the byte counts\n"
"\t-l\tprint the newline counts\n"
"\t-L\tprint the length of the longest line\n"
"\t-L\tprint the length of the longest line\n"
"\t-w\tprint the word counts\n";
static int total_lines, total_words, total_chars, max_length;