For many years, I use DESTDIR=/somewhere make install to set a temp path before a installation operation for testing purpose, so I naively think it works for any command line.
But it does NOT work with FOO=bar echo $FOO, to my surprise!
It looks like that FOO=bar bash -c 'echo $FOO' works well.
Would anyone please tell me the reason behind this? If every time I must use the after form, it is bother a little.
