0
ln -s /usr/bin/clear /usr/bin/c
Ln 4 + 3Ln x = 5Ln 2
Ln 4 + Ln x3= Ln 25 = Ln 32
Ln x3= Ln 32 - Ln 4 = Ln (32/4) = Ln 8= Ln 2
18
ln(ln)
The command is ln -s /usr/bin/java /etc/java.