shell - Changing the environment variable permenantly in Ubuntu 10.10 -

friends, want make change environment path system wide. because have program called "md5". want execute anywhere (i.e directory).

my md5 program located @ "/home/ahuq/mappingserver/md5_program". did put: "export path=$path:/home/ahuq/mappingserver/md5_program" in running shell. makes temporary changes , lets me run "md5" program anywhere temporarily. want make change permanent. did put "path=$path:/home/ahuq/mappingserver/md5_program" line "/etc/environment" file. screwed , while couldn't execute shell. knew absolute path of "nano" editor , used modify file (i.e. /etc/environment) original condition. fixed problem , can run programs "ls" shell.

but still need way permanently add path of "md5" environment. how can in ubuntu 10.10? file needs edited?

bye.

it looks adding 'program' path, want add directory path.

try

path=$path:/home/ahuq/mappingserver 

added path defined in .profile.

i hope helps.

p.s. appear new user, if answer helps please remember mark accepted, and/or give + (or -) useful answer.