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Generally,
PATH
is a list of directories, and we cannot add a file directly toPATH
./usr/local/bin/sam
is not a directory but a file and we don't need to add any directories toPATH
to usesam
command.To be honest, when I submitted #75, I don't care whether
/usr/local/bin/sam
is a directory or not, but actually, response ofwhich sam
(line 46) is/usr/local/bin/sam
.