: create the eqn command echo echo /usr/bin/eqn echo this runcom depends on yacc to work. chdir ../neqn yacc e.g cc -O -n e*.c -ly strip a.out mv -f a.out /usr/bin/eqn rm y.tab.c rm *.o chown bin /usr/bin/eqn chmod 755 /usr/bin/eqn