program define dropbox 
capture local dropbox : dir "/users/`c(username)'" dir "*Dropbox*" , respectcase
if _rc==0 & `"`dropbox'"'~="" {
local dropbox : subinstr local dropbox `"""' "" , all
cd "/users/`c(username)'/`dropbox'/"
exit
}
if _rc~=0 & "`c(os)'" == "Windows" {
capture cd c:/
if _rc~=0 {
nois di in red "Cannot find dropbox folder"
exit
}
capture local dropbox : dir "/users/`c(username)'" dir "*Dropbox*" , respectcase
if _rc==0 & `"`dropbox'"'~="" {
local dropbox : subinstr local dropbox `"""' "" , all
cd "/users/`c(username)'/`dropbox'/"
exit
}
capture local dropbox : dir "/documents and settings/`c(username)'/my documents/" dir "*dropbox*" , 
if _rc==0 &  `"`dropbox'"'~=""{
local dropbox : subinstr local dropbox `"""' "" , all
cd "c:/documents and settings/`c(username)'/my documents/`dropbox'"
exit
}

capture local dropbox : dir "/documents and settings/`c(username)'/documents/" dir "*dropbox*" , 
if _rc==0 &  `"`dropbox'"'~=""{
local dropbox : subinstr local dropbox `"""' "" , all
cd "c:/documents and settings/`c(username)'/documents/`dropbox'"
exit
}
}
if _rc~=0 & "`c(os)'" ~= "Windows" {
nois di in red "Cannot find dropbox folder"
exit
}
if _rc==0 & `"`dropbox'"'=="" {
capture local dropbox : dir "/users/`c(username)'/Documents" dir "*Dropbox*" , respectcase
if _rc==0 {
local doc "Documents"
}
if `"`dropbox'"'=="" {
capture local dropbox : dir "/users/`c(username)'/My Documents" dir "*Dropbox*" , respectcase
if _rc==0 {
local doc "My Documents"
}
}
if `"`dropbox'"'~="" {
local dropbox : subinstr local dropbox `"""' "" , all
cd "/users/`c(username)'/`doc'/`dropbox'/"
exit
}

if `"`dropbox'"'=="" & "`c(os)'" == "Windows" {
local dropbox : dir "C:/" dir "*Dropbox*" , respectcase
local dropbox : subinstr local dropbox `"""' "" , all
cd "/`dropbox'"
exit
}
}
end