Hi, yesterdar root had a problem with his linux server and I don't know certainly what happened but today I typed: lcomp98.fi-b.unam.mx carlos>javac HolaMundo.java No library path set. I revised my PATH and CLASSPATH. They are correct. Only if I type full path lcomp98.fi-b.unam.mx carlos>/users/local/bin/java/jdk1.1.5/ bin/javac HolaMundo.java javac works fine. It happened for "java" too. Thanks! Carlos Alberto Roman Zamitiz Departamento de Ingenieria en Computacion, Facultad de Ingenieria UNAM [EMAIL PROTECTED]