The output of the command:
Last login: Fri Dec 26 10:03:25 on ttys000
[rmbp:~] Sampada% echo $HOME
/Users/Sampada
[rmbp:~] Sampada% echo $SHELL
/bin/tcsh
[rmbp:~] Sampada% ls
Applications Movies error.log
Desktop Music macosx_10.7_Intel_64
Documents Pictures matlab
Downloads Public matlab_crash_dump.555-1
Dropbox abin surfer.log
Library build.log
[rmbp:~] Sampada% ls abin
AFNI_data4 macosx_10.7_Intel_64
[rmbp:~] Sampada% echo 'set path = ( $path $HOME/abin )' >> .cshrc
[rmbp:~] Sampada% echo 'setenv DYLD_FALLBACK_LIBRARY_PATH $HOME/abin' >> .cshrc
[rmbp:~] Sampada% source .cshrc
Badly placed ()'s.
[rmbp:~] Sampada% rehash
[rmbp:~] Sampada% afni
afni: Command not found.
[rmbp:~] Sampada% suma
suma: Command not found.