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Returning Values from Bash Functions | Linux Journal
November 14, 2013 at 2:41:00 PM GMT+1 - permalink -Je prefere la deuxieme solution :
function myfunc()
{
local myresult='some value'
echo "$myresult"
}result=$(myfunc) # or result=
myfunc
echo $result
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http://www.linuxjournal.com/content/return-values-bash-functions