To find out if a command or utility is available on your current path enter the command:
which command_name
If the command is found its pathname is displayed. The message
command_name: Command not found
is displayed when the command cannot be found. Multiple command names separated by spaces can be given as arguments to which. For example
finan [sparc] 21% which perl gnu /usr/local/bin/perl no gnu in /usr/local/bin /opt/SUNWspro/bin /usr/bin /usr/sbin /usr/ccs/bin /usr/ucb /usr/local/contrib/bin /usr/local/gnu/bin . finan [sparc] 22%