Throughout this book, the environment variable
HLFS will be used. It is paramount that this variable
is always defined. It should be set to the mount point chosen for the
HLFS partition. Check that the
variable is set up properly with:
Make sure the output shows the path to the HLFS partition's mount
point, which is
/mnt/hlfs if the
provided example was followed. If the output is incorrect, the
variable can be set with:
Having this variable set is beneficial in that commands such as mkdir $HLFS/tools can be typed literally. The shell will automatically replace “$HLFS” with “/mnt/hlfs” (or whatever the variable was set to) when it processes the command line.
Do not forget to check that
$HLFS is set
whenever you leave and reenter the current working environment (as
when doing a su to
root or another user).