d0f0487213a1ad3654555e8ffd12d6c9478798aa
hiram
  Tue May 28 11:21:30 2013 -0700
adding to the userUtils build refs #9149
diff --git src/utils/toLower/toLower.c src/utils/toLower/toLower.c
index 4bf5da2..334e9c3 100644
--- src/utils/toLower/toLower.c
+++ src/utils/toLower/toLower.c
@@ -1,27 +1,28 @@
 /* toLower - Convert upper case to lower case in file. Leave other chars alone. */
 #include "common.h"
 #include "linefile.h"
 
 
 void usage()
 /* Explain usage and exit. */
 {
 errAbort(
   "toLower - Convert upper case to lower case in file. Leave other chars alone\n"
   "usage:\n"
-  "   toLower in out\n");
+  "   toLower inFile outFile\n"
+  "equivalent to the unix commands: cat inFile | tr '[A-Z]' '[a-z]' > outFile");
 }
 
 void toLower(char *inName, char *outName)
 /* toLower - Convert upper case to lower case in file. Leave other chars alone. */
 {
 struct lineFile *lf = lineFileOpen(inName, FALSE);
 FILE *f = mustOpen(outName, "w");
 int lineSize;
 char *line;
 
 while (lineFileNext(lf, &line, &lineSize))
     {
     toLowerN(line, lineSize);
     mustWrite(f, line, lineSize);
     }