capitalize arguments in usage strings

By convention, required arguments are documented by SCREAMING

2 files changed, 3 insertions, 3 deletions

diff --git a/fadvise.c b/fadvise.c
index 0b58b3f..ddc07fb 100644
--- a/fadvise.c
+++ b/fadvise.c
@@ -17,8 +17,8 @@ static int usage(const char * argv0)
         int i;
 
         fprintf(stderr,
-                "Usage: %s [-a advice] [-o offset] "
-                "[-l length] FILE...\n", argv0);
+                "Usage: %s [-a ADVICE] [-o OFFSET] "
+                "[-l LENGTH] FILE...\n", argv0);
         fprintf(stderr, "\nPossible values for advice:\n");
         for (i = 0; i < ARRAY_SIZE(advice_table); ++i)
                 fprintf(stderr, "\t%s\n", advice_table[i].name);
diff --git a/mincore.c b/mincore.c
index b2de217..2e26582 100644
--- a/mincore.c
+++ b/mincore.c
@@ -2,7 +2,7 @@
 
 static int usage(const char * argv0)
 {
-        fprintf(stderr, "Usage: %s [-o offset] [-l length] FILE...\n", argv0);
+        fprintf(stderr, "Usage: %s [-o OFFSET] [-l LENGTH] FILE...\n", argv0);
         return 1;
 }