#### Linux From Scratch - Version r13.0-133

### Chapter 9. System Configuration

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# 9.2. LFS-Bootscripts-20250827

The LFS-Bootscripts package contains a set of scripts to start/stop the LFS system at bootup/shutdown. The configuration files and procedures needed to customize the boot process are described in the following sections.

Approximate build time: less than 0.1 SBU
Required disk space: 248 KB

## 9.2.1. Installation of LFS-Bootscripts

Install the package:

    make install

## 9.2.2. Contents of LFS-Bootscripts

Installed scripts: checkfs, cleanfs, console, functions, halt, ifdown, ifup, localnet, modules, mountfs, mountvirtfs, network, rc, reboot, sendsignals, setclock, ipv4-static, swap, sysctl, sysklogd, template, udev, and udev_retry
Installed directories: /etc/rc.d, /etc/init.d (symbolic link), /etc/sysconfig, /lib/services, /lib/lsb (symbolic link)

### Short Descriptions

checkfs | Checks the integrity of the file systems before they are mounted (with the exception of journaling and network-based file systems)
cleanfs | Removes files that should not be preserved between reboots, such as those in `/run/` and `/var/lock/`; it re-creates `/run/utmp` and removes the possibly present `/etc/nologin`, `/fastboot`, and `/forcefsck` files
console | Loads the correct keymap table for the desired keyboard layout; it also sets the screen font
functions | Contains common functions, such as error and status checking, that are used by several bootscripts
halt | Halts the system
ifdown | Stops a network device
ifup | Initializes a network device
localnet | Sets up the system's hostname and local loopback device
modules | Loads kernel modules listed in `/etc/sysconfig/modules`, using arguments that are also given there
mountfs | Mounts all file systems, except those that are marked noauto, or are network based
mountvirtfs | Mounts virtual kernel file systems, such as `proc`
network | Sets up network interfaces, such as network cards, and sets up the default gateway (where applicable)
rc | The master run-level control script; it is responsible for running all the other bootscripts one-by-one, in a sequence determined by the names of the symbolic links to those other bootscripts
reboot | Reboots the system
sendsignals | Makes sure every process is terminated before the system reboots or halts
setclock | Resets the system clock to local time if the hardware clock is not set to UTC
ipv4-static | Provides the functionality needed to assign a static Internet Protocol (IP) address to a network interface
swap | Enables and disables swap files and partitions
sysctl | Loads system configuration values from `/etc/sysctl.conf`, if that file exists, into the running kernel
sysklogd | Starts and stops the system and kernel log daemons
template | A template to create custom bootscripts for other daemons
udev | Prepares the `/dev` directory and starts the udev daemon
udev_retry | Retries failed udev uevents, and copies generated rules files from `/run/udev` to `/etc/udev/rules.d` if required

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