Contents
Short Descriptions
executes a command as another user as permitted by the
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is a symlink to sudo that implies the
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is used to play back or list the output logs created by sudo. |
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allows for safer editing of the |
The Sudo package allows a system
administrator to give certain users (or groups of users) the
ability to run some (or all) commands as root
or another user while logging the commands
and arguments.
This package is known to build and work properly using an LFS-7.10 platform.
Download (HTTP): http://www.sudo.ws/dist/sudo-1.8.17p1.tar.gz
Download (FTP): ftp://ftp.sudo.ws/pub/sudo/sudo-1.8.17p1.tar.gz
Download MD5 sum: 50a840a688ceb6fa3ab24fc0adf4fa23
Download size: 2.7 MB
Estimated disk space required: 27 MB (with tests)
Estimated build time: 0.4 SBU (with tests)
Linux-PAM-1.3.0, MIT Kerberos V5-1.14.3, OpenLDAP-2.4.44, MTA (that provides a sendmail command), AFS, FWTK, and Opie
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/sudo
Install Sudo by running the following commands:
./configure --prefix=/usr \ --libexecdir=/usr/lib \ --with-secure-path \ --with-all-insults \ --with-env-editor \ --docdir=/usr/share/doc/sudo-1.8.17p1 \ --with-passprompt="[sudo] password for %p" && make
To test the results, issue: env LC_ALL=C make check 2>&1 | tee ../make-check.log. Check the results with grep failed ../make-check.log.
Now, as the root
user:
make install && ln -sfv libsudo_util.so.0.0.0 /usr/lib/sudo/libsudo_util.so.0
--libexecdir=/usr/lib
: This
switch controls where private programs are installed. Everything in
that directory is a library, so they belong under /usr/lib
instead of /usr/libexec
.
--with-secure-path
: This
switch transparently adds /sbin
and
/usr/sbin
directories to the
PATH
environment variable.
--with-all-insults
: This
switch includes all the sudo
insult sets.
--with-env-editor
: This
switch enables use of the environment variable EDITOR for
visudo.
--with-passprompt
: This
switch sets the prompt.
--without-pam
: This switch avoids
building Linux-PAM support when
Linux-PAM is installed on the
system.
--disable-static
: This
switch prevents installation of static versions of the libraries.
There are many options to sudo's configure command. Check the configure --help output for a complete list.
ln -sfv libsudo_util...: Works around a bug in the installation process, which links to the previously installed version (if there is one) instead of the new one.
The sudoers
file can be quite
complicated. It is composed of two types of entries: aliases
(basically variables) and user specifications (which specify who
may run what). The installation installs a default configuration
that has no privileges installed for any user.
One example usage is to allow the system administrator to execute any program without typing a password each time root privileges are needed. This can be configured as:
# User alias specification User_Alias ADMIN = YourLoginId # Allow people in group ADMIN to run all commands without a password ADMIN ALL = NOPASSWD: ALL
For details, see man sudoers.
The Sudo developers highly
recommend using the visudo program to edit the
sudoers
file. This will provide
basic sanity checking like syntax parsing and file permission
to avoid some possible mistakes that could lead to a vulnerable
configuration.
If PAM is installed on the
system, Sudo is built with
PAM support. In that case, issue
the following command as the root
user to create the PAM
configuration file:
cat > /etc/pam.d/sudo << "EOF"
# Begin /etc/pam.d/sudo
# include the default auth settings
auth include system-auth
# include the default account settings
account include system-account
# Set default environment variables for the service user
session required pam_env.so
# include system session defaults
session include system-session
# End /etc/pam.d/sudo
EOF
chmod 644 /etc/pam.d/sudo
executes a command as another user as permitted by the
|
|
is a symlink to sudo that implies the
|
|
is used to play back or list the output logs created by sudo. |
|
allows for safer editing of the |
Last updated on 2016-08-24 18:13:01 -0700