Patch from Matt Kraai to implement uniq -[cdu]

1 files changed, 4 insertions, 0 deletions

diff --git a/applets/usage.c b/applets/usage.c
index 75c421a09..ae6cec8df 100644
--- a/applets/usage.c
+++ b/applets/usage.c
@@ -1365,6 +1365,10 @@ const char uniq_usage[] =
 #ifndef BB_FEATURE_TRIVIAL_HELP
         "\nDiscard all but one of successive identical lines from INPUT\n"
         "(or standard input), writing to OUTPUT (or standard output).\n"
+        "Options:\n"
+        "\t-c\tprefix lines by the number of occurrences\n"
+        "\t-d\tonly print duplicate lines\n"
+        "\t-u\tonly print unique lines\n"
 #endif
         ;
 #endif