Fink installation: After installation (I believe): -bash: fink: command not found
Check that this line

. /sw/bin/init.sh 


has been added in either .bash_profile, .bash_login, or .profile. If the search comes up empty, then add the line to one of these files. If you are not sure which file you should use, then add it to .bash_profile. Open a new terminal session and init.sh will modify your PATH variable.