be more specific

Author: vladak

intro.tex

@@ -2593,7 +2593,7 @@
 easy to work with and save you some lines of code.  More complex
 app\-li\-ca\-tions often use their own logging functions.
 \item Not part of the UNIX specification but in general you can find them almost
-everywhere.
+on any modern Unix-like system.
 \item Example: \example{err/err.c}
 \end{itemize}