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-rw-r--r--include/usage.h14
1 files changed, 9 insertions, 5 deletions
diff --git a/include/usage.h b/include/usage.h
index 0e3ecae..9ec25c4 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -370,19 +370,23 @@ USE_FEATURE_DATE_ISOFMT( \
"64\n"
#define dd_trivial_usage \
- "[if=FILE] [of=FILE] [bs=N] [count=N] [skip=N]\n" \
- "\t [seek=N] [conv=notrunc|noerror|sync]"
+ "[if=FILE] [of=FILE] " USE_FEATURE_DD_IBS_OBS("[ibs=N] [obs=N] ") "[bs=N] [count=N] [skip=N]\n" \
+ "\t [seek=N]" USE_FEATURE_DD_IBS_OBS(" [conv=notrunc|noerror|sync]")
#define dd_full_usage \
"Copy a file, converting and formatting according to options\n\n" \
"\tif=FILE\t\tread from FILE instead of stdin\n" \
"\tof=FILE\t\twrite to FILE instead of stdout\n" \
"\tbs=N\t\tread and write N bytes at a time\n" \
+ USE_FEATURE_DD_IBS_OBS("\tibs=N\t\tread N bytes at a time\n") \
+ USE_FEATURE_DD_IBS_OBS("\tobs=N\t\twrite N bytes at a time\n") \
"\tcount=N\t\tcopy only N input blocks\n" \
"\tskip=N\t\tskip N input blocks\n" \
"\tseek=N\t\tskip N output blocks\n" \
- "\tconv=notrunc\tdon't truncate output file\n" \
- "\tconv=noerror\tcontinue after read errors\n" \
- "\tconv=sync\tpad blocks with zeros\n" \
+ USE_FEATURE_DD_IBS_OBS( \
+ "\tconv=notrunc\tdon't truncate output file\n" \
+ "\tconv=noerror\tcontinue after read errors\n" \
+ "\tconv=sync\tpad blocks with zeros\n" \
+ ) \
"\n" \
"Numbers may be suffixed by c (x1), w (x2), b (x512), kD (x1000), k (x1024),\n" \
"MD (x1000000), M (x1048576), GD (x1000000000) or G (x1073741824)"