PATH=~/bin:/bin:/usr/bin:. /usr/xyz/bin:~/bin2:/bin:/usr/bin:. PATH=~/bin:~/bin2:/bin:/usr/bin:. ~/bin ~ /usr/xyz ~ ~ ~ argv[1] = <\a> argv[1] = <\a> /usr/xyz/bash ok ~ ~ make -k FOO=/usr/xyz/mumble /usr/xyz/mumble HOME=~ HOME=~ /usr/$x/abc HOME=~ /usr/$x/abc HOME=/usr/$x/abc /usr/$x/abc