When logged in as user root
, making a
single mistake can damage or destroy a system. Therefore, we
recommend building the packages in the next chapter as an
unprivileged user. You could use your own user name, but to make it
easier to set up a clean working environment, create a new user
called lfs
as a member of a new group
(also named lfs
) and use this user
during the installation process. As root
, issue the following commands to add the new
user:
groupadd lfs useradd -s /bin/bash -g lfs -m -k /dev/null lfs
The meaning of the command line options:
-s
/bin/bash
This makes bash
the default shell for user lfs
.
-g
lfs
This option adds user lfs
to
group lfs
.
-m
This creates a home directory for lfs
.
-k
/dev/null
This parameter prevents possible copying of files from a
skeleton directory (default is /etc/skel
) by changing the input location to
the special null device.
lfs
This is the actual name for the created group and user.
To log in as lfs
(as opposed to
switching to user lfs
when logged in
as root
, which does not require the
lfs
user to have a password), give
lfs
a password:
passwd lfs
Grant lfs
full access to $LFS/tools
by making lfs
the directory owner:
chown -v lfs $LFS/tools
If a separate working directory was created as suggested, give user
lfs
ownership of this directory:
chown -v lfs $LFS/sources
In some host systems, the following command does not complete properly and suspends the login to the lfs user to the background. If the prompt "lfs:~$" does not appear immediately, entering the fg command will fix the issue.
Next, login as user lfs
. This can be
done via a virtual console, through a display manager, or with the
following substitute user command:
su - lfs
The “-
” instructs
su to start a login
shell as opposed to a non-login shell. The difference between these
two types of shells can be found in detail in bash(1)
and info
bash.