How to find Compiler version of Unix boxes

 SOLARIS:

# which cc

/opt/SUNWspro/bin/cc

# cd /opt/SUNWspro/bin/

# CC -V

AIX:

# which cc

/usr/vac/bin/cc

# cd /usr/vac/bin/

# ./xlc_r –version

Linux:

# which cc

/usr/bin/cc

# cd /usr/bin/

# gcc –v

HPUX:

# which cc

#aCC -V