Fix command line handling of display counts

With minor updates in usage() output to match the command line text
with the options test.

2 files changed, 5 insertions, 3 deletions

diff --git a/HISTORY b/HISTORY
index 73d7f8d..d59f06e 100644
--- a/HISTORY
+++ b/HISTORY
@@ -18,6 +18,8 @@ Release 4.0.0
      * Show swapping activity
      * Simplify top I/O display
      * Remove toggle for display raw I/O statistics
+     * Fix bug for specifing number of displays to show on the command line
+       without -x flag
 
 Release 3.7.0
 
diff --git a/pg_top.c b/pg_top.c
index 5655719..71df05e 100644
--- a/pg_top.c
+++ b/pg_top.c
@@ -135,8 +135,8 @@ usage(const char *progname)
 {
 	printf("%s monitors a PostgreSQL database cluster.\n\n", progname);
 	printf("Usage:\n");
-	printf("  %s [OPTION]... [NUMBER]\n", progname);
-	printf("\nOptions:\n");
+	printf("  %s [OPTION]... [COUNT]\n", progname);
+	printf("\nGeneral options:\n");
 	printf("  -b, --batch               use batch mode\n");
 	printf("  -c, --show-command        display command name of each process\n");
 	printf("  -C, --color-mode          turn off color mode\n");
@@ -770,7 +770,7 @@ main(int argc, char *argv[])
 			}
 			else
 			{
-				pgtctx.topn = i;
+				pgtctx.displays = i;
 			}
 		}