Add HUMAN_READABLE define for -m and -h support in du, df, and ls

Add support for -k in du, df, and ls(no define, it's for compatibliity with the GNU utils as bb does -k by default)
Fix bug #1084

12 files changed, 330 insertions, 42 deletions

diff --git a/Config.h b/Config.h
index a2a2366a3..cfdb52f31 100644
--- a/Config.h
+++ b/Config.h
@@ -290,6 +290,9 @@
 // have a really good reason for cleaning things up manually.
 //#define BB_FEATURE_CLEAN_UP
 //
+// Support for human readable output by ls, du, etc.(example 13k, 23M, 235G)
+#define BB_FEATURE_HUMAN_READABLE
+//
 // End of Features List
 //
 //
diff --git a/applets/usage.c b/applets/usage.c
index 864891797..9ae2bb3ef 100644
--- a/applets/usage.c
+++ b/applets/usage.c
@@ -190,9 +190,22 @@ const char deallocvt_usage[] =
 
 #if defined BB_DF
 const char df_usage[] =
-	"df [filesystem ...]"
+	"df [-?"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"hm"
+#endif
+	"k] [filesystem ...]\n"
 #ifndef BB_FEATURE_TRIVIAL_HELP
 	"\n\nPrint the filesystem space used and space available."
+	"Options:\n"
+	"\t-?\tshow usage information\n"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"\t-h\tprint sizes in human readable format (e.g., 1K 243M 2G )\n"
+	"\t-m\tprint sizes in megabytes\n"
+	"\t-k\tprint sizes in kilobytes(default)\n"
+#else
+	"\t-k\tprint sizes in kilobytes(compatability)\n"
+#endif
 #endif
 	;
 #endif
@@ -244,13 +257,25 @@ const char dpkg_deb_usage[] =
 
 #if defined BB_DU
 const char du_usage[] =
-	"du [OPTION]... [FILE]..."
+	"du [-?ls"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"hm"
+#endif
+	"k] [FILE]...\n"
 #ifndef BB_FEATURE_TRIVIAL_HELP
 	"\n\nSummarizes disk space used for each FILE and/or directory.\n"
 	"Disk space is printed in units of 1024 bytes.\n\n"
 	"Options:\n"
+        "\t-?\tshow usage information\n"
 	"\t-l\tcount sizes many times if hard linked\n"
 	"\t-s\tdisplay only a total for each argument"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"\t-h\tprint sizes in human readable format (e.g., 1K 243M 2G )\n"
+	"\t-m\tprint sizes in megabytes\n"
+	"\t-k\tprint sizes in kilobytes(default)\n"
+#else
+	"\t-k\tprint sizes in kilobytes(compatability)\n"
+#endif
 #endif
 	;
 #endif
@@ -661,7 +686,10 @@ const char ls_usage[] =
 #ifdef BB_FEATURE_LS_SORTFILES
 	"X"
 #endif
-	"] [filenames...]"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"h"
+#endif
+	"k] [filenames...]\n"
 #ifndef BB_FEATURE_TRIVIAL_HELP
 	"\n\nList directory contents\n\n"
 	"Options:\n"
@@ -716,6 +744,14 @@ const char ls_usage[] =
 #ifdef BB_FEATURE_LS_SORTFILES
 	"\t-X\tsort the listing by extension\n"
 #endif
+
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"\t-h\tprint sizes in human readable format (e.g., 1K 243M 2G )\n"
+	"\t-k\tprint sizes in kilobytes(default)\n"
+#else
+	"\t-k\tprint sizes in kilobytes(compatability)"
+#endif
+
 #endif /*  BB_FEATURE_TRIVIAL_HELP */
 	;
 #endif /* BB_LS */
diff --git a/busybox.h b/busybox.h
index a89ac3694..018c636cf 100644
--- a/busybox.h
+++ b/busybox.h
@@ -259,4 +259,11 @@ extern int sysinfo (struct sysinfo* info);
 #define isclr(a,i)      (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
 #endif
 
+#ifdef BB_FEATURE_HUMAN_READABLE
+char *format(unsigned long val, unsigned long hr);
+#define KILOBYTE 1024
+#define MEGABYTE (KILOBYTE*1024)
+#define GIGABYTE (MEGABYTE*1024)
+#endif
+
 #endif /* _BB_INTERNAL_H_ */
diff --git a/coreutils/df.c b/coreutils/df.c
index dc4849049..aa04682a7 100644
--- a/coreutils/df.c
+++ b/coreutils/df.c
@@ -28,6 +28,9 @@
 #include <sys/vfs.h>
 
 extern const char mtab_file[];	/* Defined in utility.c */
+#ifdef BB_FEATURE_HUMAN_READABLE
+unsigned long disp_hr = KILOBYTE; 
+#endif
 
 static int df(char *device, const char *mountPoint)
 {
@@ -42,19 +45,32 @@ static int df(char *device, const char *mountPoint)
 
 	if (s.f_blocks > 0) {
 		blocks_used = s.f_blocks - s.f_bfree;
-		blocks_percent_used = (long)
-			(blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
+		if(0 == blocks_used)
+			blocs_percent_used = 0;
+		else
+			blocks_percent_used = (long)
+			  (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
 		if (strcmp(device, "/dev/root") == 0) {
 			/* Adjusts device to be the real root device,
 			 * or leaves device alone if it can't find it */
 			find_real_root_device_name( device);
 		}
+#ifdef BB_FEATURE_HUMAN_READABLE
+		printf("%-20s %9s",
+			   device,
+			   format((s.f_blocks * s.f_bsize), disp_hr));
+		printf(" %9s", format((s.f_blocks - s.f_bfree) * s.f_bsize, disp_hr));
+		printf(" %9s %3ld%% %s\n",
+			   format(s.f_bavail * s.f_bsize, disp_hr),
+			   blocks_percent_used, mountPoint);
+#else
 		printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
 			   device,
 			   (long) (s.f_blocks * (s.f_bsize / 1024.0)),
 			   (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / 1024.0)),
 			   (long) (s.f_bavail * (s.f_bsize / 1024.0)),
 			   blocks_percent_used, mountPoint);
+#endif
 
 	}
 
@@ -64,24 +80,46 @@ static int df(char *device, const char *mountPoint)
 extern int df_main(int argc, char **argv)
 {
 	int status = EXIT_SUCCESS;
+	int opt = 0;
+	int i = 0;
+
+	while ((opt = getopt(argc, argv, "?"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"hm"
+#endif
+	"k"
+)) > 0)
+	{
+		switch (opt) {
+#ifdef BB_FEATURE_HUMAN_READABLE
+			case 'h': disp_hr = 0;         break;
+			case 'm': disp_hr = MEGABYTE;  break;
+			case 'k': disp_hr = KILOBYTE;  break;
+#else
+			case 'k': break;
+#endif
+			case '?': goto print_df_usage; break;
+		}
+	}
 
 	printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
-		   "1k-blocks", "Used", "Available", "Use%", "Mounted on");
+#ifdef BB_FEATURE_HUMAN_READABLE
+		   (KILOBYTE == disp_hr) ? "1k-blocks" : "     Size",
+#else
+		   "1k-blocks",
+#endif
+	       "Used", "Available", "Use%", "Mounted on");
 
-	if (argc > 1) {
-		struct mntent *mountEntry;
 
-		if (**(argv + 1) == '-') {
-			usage(df_usage);
-		}
-		while (argc > 1) {
-			if ((mountEntry = find_mount_point(argv[1], mtab_file)) == 0) {
-				error_msg("%s: can't find mount point.\n", argv[1]);
+	if(optind < argc) {
+		struct mntent *mountEntry;
+		for(i = optind; i < argc; i++)
+		{
+			if ((mountEntry = find_mount_point(argv[i], mtab_file)) == 0) {
+				error_msg("%s: can't find mount point.\n", argv[i]);
 				status = EXIT_FAILURE;
 			} else if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
 				status = EXIT_FAILURE;
-			argc--;
-			argv++;
 		}
 	} else {
 		FILE *mountTable;
@@ -101,6 +139,10 @@ extern int df_main(int argc, char **argv)
 	}
 
 	return status;
+
+print_df_usage:
+    usage(df_usage);
+    return(FALSE);
 }
 
 /*
diff --git a/coreutils/du.c b/coreutils/du.c
index 8628732d8..56a7a9a0c 100644
--- a/coreutils/du.c
+++ b/coreutils/du.c
@@ -33,6 +33,10 @@
 #include <stdio.h>
 #include <errno.h>
 
+#ifdef BB_FEATURE_HUMAN_READABLE
+unsigned long du_disp_hr = KILOBYTE;
+#endif
+
 typedef void (Display) (long, char *);
 
 static int du_depth = 0;
@@ -42,12 +46,17 @@ static Display *print;
 
 static void print_normal(long size, char *filename)
 {
+#ifdef BB_FEATURE_HUMAN_READABLE
+	printf("%s\t%s\n", format((size * KILOBYTE), du_disp_hr), filename);
+#else
 	printf("%ld\t%s\n", size, filename);
+#endif
 }
 
 static void print_summary(long size, char *filename)
 {
 	if (du_depth == 1) {
+printf("summary\n");
 		print_normal(size, filename);
 	}
 }
@@ -132,7 +141,11 @@ int du_main(int argc, char **argv)
 	print = print_normal;
 
 	/* parse argv[] */
-	while ((c = getopt(argc, argv, "sl")) != EOF) {
+	while ((c = getopt(argc, argv, "sl"
+#ifdef BB_FEATURE_HUMAN_READABLE
+"hm"
+#endif
+"k")) != EOF) {
 			switch (c) {
 			case 's':
 					print = print_summary;
@@ -140,6 +153,13 @@ int du_main(int argc, char **argv)
 			case 'l':
 					count_hardlinks = 1;
 					break;
+#ifdef BB_FEATURE_HUMAN_READABLE
+			case 'h': du_disp_hr = 0;        break;
+			case 'm': du_disp_hr = MEGABYTE; break;
+			case 'k': du_disp_hr = KILOBYTE; break;
+#else
+			case 'k': break;
+#endif
 			default:
 					usage(du_usage);
 			}
@@ -155,7 +175,7 @@ int du_main(int argc, char **argv)
 		for (i=optind; i < argc; i++) {
 			if ((sum = du(argv[i])) == 0)
 				status = EXIT_FAILURE;
-			if (is_directory(argv[i], FALSE, NULL)==FALSE) {
+			if(is_directory(argv[i], FALSE, NULL)==FALSE) {
 				print_normal(sum, argv[i]);
 			}
 			reset_ino_dev_hashtable();
@@ -165,7 +185,7 @@ int du_main(int argc, char **argv)
 	return status;
 }
 
-/* $Id: du.c,v 1.33 2001/01/18 02:57:08 kraai Exp $ */
+/* $Id: du.c,v 1.34 2001/01/22 22:35:38 rjune Exp $ */
 /*
 Local Variables:
 c-file-style: "linux"
diff --git a/coreutils/ls.c b/coreutils/ls.c
index fa3e5424d..754a6d450 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -176,6 +176,10 @@ static unsigned short tabstops = 8;
 
 static int status = EXIT_SUCCESS;
 
+#ifdef BB_FEATURE_HUMAN_READABLE
+unsigned long ls_disp_hr = KILOBYTE;
+#endif
+
 static int my_stat(struct dnode *cur)
 {
 #ifdef BB_FEATURE_LS_FOLLOWLINKS
@@ -583,11 +587,15 @@ int list_single(struct dnode *dn)
 				column += 8;
 				break;
 			case LIST_BLOCKS:
+#ifdef BB_FEATURE_HUMAN_READABLE
+				fprintf(stdout, "%5s ", format(dn->dstat.st_size, ls_disp_hr));
+#else
 #if _FILE_OFFSET_BITS == 64
 				printf("%4lld ", dn->dstat.st_blocks>>1);
 #else
 				printf("%4ld ", dn->dstat.st_blocks>>1);
 #endif
+#endif
 				column += 5;
 				break;
 			case LIST_MODEBITS:
@@ -622,11 +630,15 @@ int list_single(struct dnode *dn)
 				if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
 					printf("%4d, %3d ", (int)MAJOR(dn->dstat.st_rdev), (int)MINOR(dn->dstat.st_rdev));
 				} else {
+#ifdef BB_FEATURE_HUMAN_READABLE
+					fprintf(stdout, "%9s ", format(dn->dstat.st_size, ls_disp_hr));
+#else
 #if _FILE_OFFSET_BITS == 64
 					printf("%9lld ", dn->dstat.st_size);
 #else
 					printf("%9ld ", dn->dstat.st_size);
 #endif
+#endif
 				}
 				column += 10;
 				break;
@@ -724,7 +736,10 @@ extern int ls_main(int argc, char **argv)
 #ifdef BB_FEATURE_LS_FOLLOWLINKS
 "L"
 #endif
-	)) > 0) {
+#ifdef BB_FEATURE_HUMAN_READABLE
+"h"
+#endif
+"k")) > 0) {
 		switch (opt) {
 			case '1': style_fmt = STYLE_SINGLE; break;
 			case 'A': disp_opts |= DISP_HIDDEN; break;
@@ -733,7 +748,13 @@ extern int ls_main(int argc, char **argv)
 			case 'd': disp_opts |= DISP_NOLIST; break;
 			case 'g': /* ignore -- for ftp servers */ break;
 			case 'i': list_fmt |= LIST_INO; break;
-			case 'l': style_fmt = STYLE_LONG; list_fmt |= LIST_LONG; break;
+			case 'l':
+				style_fmt = STYLE_LONG;
+				list_fmt |= LIST_LONG;
+#ifdef BB_FEATURE_HUMAN_READABLE
+				ls_disp_hr = 1;
+#endif
+			break;
 			case 'n': list_fmt |= LIST_ID_NUMERIC; break;
 			case 's': list_fmt |= LIST_BLOCKS; break;
 			case 'x': disp_opts = DISP_ROWS; break;
@@ -777,6 +798,12 @@ extern int ls_main(int argc, char **argv)
 			case 'T': tabstops= atoi(optarg); break;
 			case 'w': terminal_width= atoi(optarg); break;
 #endif
+#ifdef BB_FEATURE_HUMAN_READABLE
+			case 'h': ls_disp_hr = 0; break;
+			case 'k': ls_disp_hr = KILOBYTE; break;
+#else
+			case 'k': break;
+#endif
 			default:
 				goto print_usage_message;
 		}
diff --git a/df.c b/df.c
index dc4849049..aa04682a7 100644
--- a/df.c
+++ b/df.c
@@ -28,6 +28,9 @@
 #include <sys/vfs.h>
 
 extern const char mtab_file[];	/* Defined in utility.c */
+#ifdef BB_FEATURE_HUMAN_READABLE
+unsigned long disp_hr = KILOBYTE; 
+#endif
 
 static int df(char *device, const char *mountPoint)
 {
@@ -42,19 +45,32 @@ static int df(char *device, const char *mountPoint)
 
 	if (s.f_blocks > 0) {
 		blocks_used = s.f_blocks - s.f_bfree;
-		blocks_percent_used = (long)
-			(blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
+		if(0 == blocks_used)
+			blocs_percent_used = 0;
+		else
+			blocks_percent_used = (long)
+			  (blocks_used * 100.0 / (blocks_used + s.f_bavail) + 0.5);
 		if (strcmp(device, "/dev/root") == 0) {
 			/* Adjusts device to be the real root device,
 			 * or leaves device alone if it can't find it */
 			find_real_root_device_name( device);
 		}
+#ifdef BB_FEATURE_HUMAN_READABLE
+		printf("%-20s %9s",
+			   device,
+			   format((s.f_blocks * s.f_bsize), disp_hr));
+		printf(" %9s", format((s.f_blocks - s.f_bfree) * s.f_bsize, disp_hr));
+		printf(" %9s %3ld%% %s\n",
+			   format(s.f_bavail * s.f_bsize, disp_hr),
+			   blocks_percent_used, mountPoint);
+#else
 		printf("%-20s %9ld %9ld %9ld %3ld%% %s\n",
 			   device,
 			   (long) (s.f_blocks * (s.f_bsize / 1024.0)),
 			   (long) ((s.f_blocks - s.f_bfree) * (s.f_bsize / 1024.0)),
 			   (long) (s.f_bavail * (s.f_bsize / 1024.0)),
 			   blocks_percent_used, mountPoint);
+#endif
 
 	}
 
@@ -64,24 +80,46 @@ static int df(char *device, const char *mountPoint)
 extern int df_main(int argc, char **argv)
 {
 	int status = EXIT_SUCCESS;
+	int opt = 0;
+	int i = 0;
+
+	while ((opt = getopt(argc, argv, "?"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"hm"
+#endif
+	"k"
+)) > 0)
+	{
+		switch (opt) {
+#ifdef BB_FEATURE_HUMAN_READABLE
+			case 'h': disp_hr = 0;         break;
+			case 'm': disp_hr = MEGABYTE;  break;
+			case 'k': disp_hr = KILOBYTE;  break;
+#else
+			case 'k': break;
+#endif
+			case '?': goto print_df_usage; break;
+		}
+	}
 
 	printf("%-20s %-14s %s %s %s %s\n", "Filesystem",
-		   "1k-blocks", "Used", "Available", "Use%", "Mounted on");
+#ifdef BB_FEATURE_HUMAN_READABLE
+		   (KILOBYTE == disp_hr) ? "1k-blocks" : "     Size",
+#else
+		   "1k-blocks",
+#endif
+	       "Used", "Available", "Use%", "Mounted on");
 
-	if (argc > 1) {
-		struct mntent *mountEntry;
 
-		if (**(argv + 1) == '-') {
-			usage(df_usage);
-		}
-		while (argc > 1) {
-			if ((mountEntry = find_mount_point(argv[1], mtab_file)) == 0) {
-				error_msg("%s: can't find mount point.\n", argv[1]);
+	if(optind < argc) {
+		struct mntent *mountEntry;
+		for(i = optind; i < argc; i++)
+		{
+			if ((mountEntry = find_mount_point(argv[i], mtab_file)) == 0) {
+				error_msg("%s: can't find mount point.\n", argv[i]);
 				status = EXIT_FAILURE;
 			} else if (!df(mountEntry->mnt_fsname, mountEntry->mnt_dir))
 				status = EXIT_FAILURE;
-			argc--;
-			argv++;
 		}
 	} else {
 		FILE *mountTable;
@@ -101,6 +139,10 @@ extern int df_main(int argc, char **argv)
 	}
 
 	return status;
+
+print_df_usage:
+    usage(df_usage);
+    return(FALSE);
 }
 
 /*
diff --git a/du.c b/du.c
index 8628732d8..56a7a9a0c 100644
--- a/du.c
+++ b/du.c
@@ -33,6 +33,10 @@
 #include <stdio.h>
 #include <errno.h>
 
+#ifdef BB_FEATURE_HUMAN_READABLE
+unsigned long du_disp_hr = KILOBYTE;
+#endif
+
 typedef void (Display) (long, char *);
 
 static int du_depth = 0;
@@ -42,12 +46,17 @@ static Display *print;
 
 static void print_normal(long size, char *filename)
 {
+#ifdef BB_FEATURE_HUMAN_READABLE
+	printf("%s\t%s\n", format((size * KILOBYTE), du_disp_hr), filename);
+#else
 	printf("%ld\t%s\n", size, filename);
+#endif
 }
 
 static void print_summary(long size, char *filename)
 {
 	if (du_depth == 1) {
+printf("summary\n");
 		print_normal(size, filename);
 	}
 }
@@ -132,7 +141,11 @@ int du_main(int argc, char **argv)
 	print = print_normal;
 
 	/* parse argv[] */
-	while ((c = getopt(argc, argv, "sl")) != EOF) {
+	while ((c = getopt(argc, argv, "sl"
+#ifdef BB_FEATURE_HUMAN_READABLE
+"hm"
+#endif
+"k")) != EOF) {
 			switch (c) {
 			case 's':
 					print = print_summary;
@@ -140,6 +153,13 @@ int du_main(int argc, char **argv)
 			case 'l':
 					count_hardlinks = 1;
 					break;
+#ifdef BB_FEATURE_HUMAN_READABLE
+			case 'h': du_disp_hr = 0;        break;
+			case 'm': du_disp_hr = MEGABYTE; break;
+			case 'k': du_disp_hr = KILOBYTE; break;
+#else
+			case 'k': break;
+#endif
 			default:
 					usage(du_usage);
 			}
@@ -155,7 +175,7 @@ int du_main(int argc, char **argv)
 		for (i=optind; i < argc; i++) {
 			if ((sum = du(argv[i])) == 0)
 				status = EXIT_FAILURE;
-			if (is_directory(argv[i], FALSE, NULL)==FALSE) {
+			if(is_directory(argv[i], FALSE, NULL)==FALSE) {
 				print_normal(sum, argv[i]);
 			}
 			reset_ino_dev_hashtable();
@@ -165,7 +185,7 @@ int du_main(int argc, char **argv)
 	return status;
 }
 
-/* $Id: du.c,v 1.33 2001/01/18 02:57:08 kraai Exp $ */
+/* $Id: du.c,v 1.34 2001/01/22 22:35:38 rjune Exp $ */
 /*
 Local Variables:
 c-file-style: "linux"
diff --git a/include/busybox.h b/include/busybox.h
index a89ac3694..018c636cf 100644
--- a/include/busybox.h
+++ b/include/busybox.h
@@ -259,4 +259,11 @@ extern int sysinfo (struct sysinfo* info);
 #define isclr(a,i)      (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
 #endif
 
+#ifdef BB_FEATURE_HUMAN_READABLE
+char *format(unsigned long val, unsigned long hr);
+#define KILOBYTE 1024
+#define MEGABYTE (KILOBYTE*1024)
+#define GIGABYTE (MEGABYTE*1024)
+#endif
+
 #endif /* _BB_INTERNAL_H_ */
diff --git a/ls.c b/ls.c
index fa3e5424d..754a6d450 100644
--- a/ls.c
+++ b/ls.c
@@ -176,6 +176,10 @@ static unsigned short tabstops = 8;
 
 static int status = EXIT_SUCCESS;
 
+#ifdef BB_FEATURE_HUMAN_READABLE
+unsigned long ls_disp_hr = KILOBYTE;
+#endif
+
 static int my_stat(struct dnode *cur)
 {
 #ifdef BB_FEATURE_LS_FOLLOWLINKS
@@ -583,11 +587,15 @@ int list_single(struct dnode *dn)
 				column += 8;
 				break;
 			case LIST_BLOCKS:
+#ifdef BB_FEATURE_HUMAN_READABLE
+				fprintf(stdout, "%5s ", format(dn->dstat.st_size, ls_disp_hr));
+#else
 #if _FILE_OFFSET_BITS == 64
 				printf("%4lld ", dn->dstat.st_blocks>>1);
 #else
 				printf("%4ld ", dn->dstat.st_blocks>>1);
 #endif
+#endif
 				column += 5;
 				break;
 			case LIST_MODEBITS:
@@ -622,11 +630,15 @@ int list_single(struct dnode *dn)
 				if (S_ISBLK(dn->dstat.st_mode) || S_ISCHR(dn->dstat.st_mode)) {
 					printf("%4d, %3d ", (int)MAJOR(dn->dstat.st_rdev), (int)MINOR(dn->dstat.st_rdev));
 				} else {
+#ifdef BB_FEATURE_HUMAN_READABLE
+					fprintf(stdout, "%9s ", format(dn->dstat.st_size, ls_disp_hr));
+#else
 #if _FILE_OFFSET_BITS == 64
 					printf("%9lld ", dn->dstat.st_size);
 #else
 					printf("%9ld ", dn->dstat.st_size);
 #endif
+#endif
 				}
 				column += 10;
 				break;
@@ -724,7 +736,10 @@ extern int ls_main(int argc, char **argv)
 #ifdef BB_FEATURE_LS_FOLLOWLINKS
 "L"
 #endif
-	)) > 0) {
+#ifdef BB_FEATURE_HUMAN_READABLE
+"h"
+#endif
+"k")) > 0) {
 		switch (opt) {
 			case '1': style_fmt = STYLE_SINGLE; break;
 			case 'A': disp_opts |= DISP_HIDDEN; break;
@@ -733,7 +748,13 @@ extern int ls_main(int argc, char **argv)
 			case 'd': disp_opts |= DISP_NOLIST; break;
 			case 'g': /* ignore -- for ftp servers */ break;
 			case 'i': list_fmt |= LIST_INO; break;
-			case 'l': style_fmt = STYLE_LONG; list_fmt |= LIST_LONG; break;
+			case 'l':
+				style_fmt = STYLE_LONG;
+				list_fmt |= LIST_LONG;
+#ifdef BB_FEATURE_HUMAN_READABLE
+				ls_disp_hr = 1;
+#endif
+			break;
 			case 'n': list_fmt |= LIST_ID_NUMERIC; break;
 			case 's': list_fmt |= LIST_BLOCKS; break;
 			case 'x': disp_opts = DISP_ROWS; break;
@@ -777,6 +798,12 @@ extern int ls_main(int argc, char **argv)
 			case 'T': tabstops= atoi(optarg); break;
 			case 'w': terminal_width= atoi(optarg); break;
 #endif
+#ifdef BB_FEATURE_HUMAN_READABLE
+			case 'h': ls_disp_hr = 0; break;
+			case 'k': ls_disp_hr = KILOBYTE; break;
+#else
+			case 'k': break;
+#endif
 			default:
 				goto print_usage_message;
 		}
diff --git a/usage.c b/usage.c
index 864891797..9ae2bb3ef 100644
--- a/usage.c
+++ b/usage.c
@@ -190,9 +190,22 @@ const char deallocvt_usage[] =
 
 #if defined BB_DF
 const char df_usage[] =
-	"df [filesystem ...]"
+	"df [-?"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"hm"
+#endif
+	"k] [filesystem ...]\n"
 #ifndef BB_FEATURE_TRIVIAL_HELP
 	"\n\nPrint the filesystem space used and space available."
+	"Options:\n"
+	"\t-?\tshow usage information\n"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"\t-h\tprint sizes in human readable format (e.g., 1K 243M 2G )\n"
+	"\t-m\tprint sizes in megabytes\n"
+	"\t-k\tprint sizes in kilobytes(default)\n"
+#else
+	"\t-k\tprint sizes in kilobytes(compatability)\n"
+#endif
 #endif
 	;
 #endif
@@ -244,13 +257,25 @@ const char dpkg_deb_usage[] =
 
 #if defined BB_DU
 const char du_usage[] =
-	"du [OPTION]... [FILE]..."
+	"du [-?ls"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"hm"
+#endif
+	"k] [FILE]...\n"
 #ifndef BB_FEATURE_TRIVIAL_HELP
 	"\n\nSummarizes disk space used for each FILE and/or directory.\n"
 	"Disk space is printed in units of 1024 bytes.\n\n"
 	"Options:\n"
+        "\t-?\tshow usage information\n"
 	"\t-l\tcount sizes many times if hard linked\n"
 	"\t-s\tdisplay only a total for each argument"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"\t-h\tprint sizes in human readable format (e.g., 1K 243M 2G )\n"
+	"\t-m\tprint sizes in megabytes\n"
+	"\t-k\tprint sizes in kilobytes(default)\n"
+#else
+	"\t-k\tprint sizes in kilobytes(compatability)\n"
+#endif
 #endif
 	;
 #endif
@@ -661,7 +686,10 @@ const char ls_usage[] =
 #ifdef BB_FEATURE_LS_SORTFILES
 	"X"
 #endif
-	"] [filenames...]"
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"h"
+#endif
+	"k] [filenames...]\n"
 #ifndef BB_FEATURE_TRIVIAL_HELP
 	"\n\nList directory contents\n\n"
 	"Options:\n"
@@ -716,6 +744,14 @@ const char ls_usage[] =
 #ifdef BB_FEATURE_LS_SORTFILES
 	"\t-X\tsort the listing by extension\n"
 #endif
+
+#ifdef BB_FEATURE_HUMAN_READABLE
+	"\t-h\tprint sizes in human readable format (e.g., 1K 243M 2G )\n"
+	"\t-k\tprint sizes in kilobytes(default)\n"
+#else
+	"\t-k\tprint sizes in kilobytes(compatability)"
+#endif
+
 #endif /*  BB_FEATURE_TRIVIAL_HELP */
 	;
 #endif /* BB_LS */
diff --git a/utility.c b/utility.c
index 9f524c3e2..bff589a76 100644
--- a/utility.c
+++ b/utility.c
@@ -1770,6 +1770,27 @@ ssize_t safe_read(int fd, void *buf, size_t count)
 }
 #endif
 
+#ifdef BB_FEATURE_HUMAN_READABLE
+char *format(unsigned long val, unsigned long hr)
+{
+	static char str[10] = "\0";
+
+	if(val == 0)
+		return("0");
+	if(hr)
+		snprintf(str, 9, "%ld", val/hr);
+	else if(val >= GIGABYTE)
+		snprintf(str, 9, "%.1LfG", ((long double)(val)/GIGABYTE));
+	else if(val >= MEGABYTE)
+		snprintf(str, 9, "%.1LfM", ((long double)(val)/MEGABYTE));
+	else if(val >= KILOBYTE)
+		snprintf(str, 9, "%.1Lfk", ((long double)(val)/KILOBYTE));
+	else
+		snprintf(str, 9, "%ld", (val));
+	return(str);
+}
+#endif
+
 /* END CODE */
 /*
 Local Variables: