diff --git a/README.adoc b/README.adoc
index f214046..9592baa 100644
--- a/README.adoc
+++ b/README.adoc
@@ -9,7 +9,9 @@ Command-line tool that allows to call an app with arguments from an args file.
 == Usage
 
 ----
-injarg 
+injarg <app> [ ... --args <file> ... ]
+eval $( injarg <app> [ ... --args <file> ... ] )
+injarg <app> [ ... --args <file> ... ] | /bin/sh
 ----
 
 == Installation
diff --git a/bin/injarg b/bin/injarg
index de5bf78..5a0bcd4 100755
--- a/bin/injarg
+++ b/bin/injarg
@@ -315,6 +315,8 @@ end
 if #arg < 1 then
    errfln( "Need at least the app name." )
    printfln( usage() )
+   printfln( "eval $( "..usage().." )" )
+   printfln( usage().." | /bin/sh" )
    errexit()
 end