10.64. Util-linux-2.12r

#### Cross-Compiled Linux From Scratch - Version 1.0.0rc2-x86_64-Multilib

### Chapter 10. Installing Basic System Software

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# 10.64. Util-linux-2.12r

The Util-linux package contains miscellaneous utility programs. Among them are utilities for handling file systems, consoles, partitions, and messages.

## 10.64.1. FHS compliance notes

The FHS recommends using the `/var/lib/hwclock` directory instead of the usual `/etc` directory as the location for the `adjtime` file. To make the hwclock program FHS-compliant, run the following:

    sed -i 's@etc/adjtime@var/lib/hwclock/adjtime@g' \
        hwclock/hwclock.c
    mkdir -pv /var/lib/hwclock

## 10.64.2. Installation of Util-linux

Util-linux fails to compile against newer versions of Linux kernel headers. The following patch properly fixes this issue:

    patch -Np1 -i ../util-linux-2.12r-cramfs-1.patch

The following patch fixes build issues with GCC 4.1.1:

    patch -Np1 -i ../util-linux-2.12r-gcc4_fixes-1.patch

The following patch fixes swapon.c, it tries to find the variable R_OK, but the header that has R_OK is not included:

    patch -Np1 -i ../util-linux-2.12r-missing_header-1.patch

Prepare Util-linux for compilation:

    CC="gcc ${BUILD64}" ./configure

Compile the package:

    make HAVE_KILL=yes HAVE_SLN=yes

The meaning of the make parameters:

`HAVE_KILL=yes`

  This prevents the kill program (already installed by Procps) from being built and installed again.

`HAVE_SLN=yes`

  This prevents the sln program (a statically linked version of ln already installed by Glibc) from being built and installed again.

This package does not come with a test suite.

Install the package and move the logger binary to `/bin` as it is needed by the CLFS-Bootscripts package:

    make HAVE_KILL=yes HAVE_SLN=yes install
    mv -v /usr/bin/logger /bin

## 10.64.3. Contents of Util-linux

Installed programs: agetty, arch, blockdev, cal, cfdisk, chkdupexe, col, colcrt, colrm, column, ctrlaltdel, cytune, ddate, dmesg, elvtune, fdformat, fdisk, flock, fsck.cramfs, fsck.minix, getopt, hexdump, hwclock, ipcrm, ipcs, isosize, line, logger, look, losetup, mcookie, mkfs, mkfs.bfs, mkfs.cramfs, mkfs.minix, mkswap, more, mount, namei, pg, pivot_root, ramsize (link to rdev), raw, rdev, readprofile, rename, renice, rev, rootflags (link to rdev), script, setfdprm, setsid, setterm, sfdisk, swapoff (link to swapon), swapon, tailf, tunelp, ul, umount, vidmode (link to rdev), whereis, and write

### Short Descriptions

agetty | Opens a tty port, prompts for a login name, and then invokes the login program
arch | Reports the machine's architecture
blockdev | Allows users to call block device ioctls from the command line
cal | Displays a simple calendar
cfdisk | Manipulates the partition table of the given device
chkdupexe | Finds duplicate executables
col | Filters out reverse line feeds
colcrt | Filters nroff output for terminals that lack some capabilities, such as overstriking and half-lines
colrm | Filters out the given columns
column | Formats a given file into multiple columns
ctrlaltdel | Sets the function of the Ctrl+Alt+Del key combination to a hard or a soft reset
cytune | Tunes the parameters of the serial line drivers for Cyclades cards
ddate | Gives the Discordian date or converts the given Gregorian date to a Discordian one
dmesg | Dumps the kernel boot messages
elvtune | Tunes the performance and interactivity of a block device
fdformat | Low-level formats a floppy disk
fdisk | Manipulates the partition table of the given device
flock | Acquires a file lock and then executes a command with the lock held
fsck.cramfs | Performs a consistency check on the Cramfs file system on the given device
fsck.minix | Performs a consistency check on the Minix file system on the given device
getopt | Parses options in the given command line
hexdump | Dumps the given file in hexadecimal or in another given format
hwclock | Reads or sets the system's hardware clock, also called the Real-Time Clock (RTC) or Basic Input-Output System (BIOS) clock
ipcrm | Removes the given Inter-Process Communication (IPC) resource
ipcs | Provides IPC status information
isosize | Reports the size of an iso9660 file system
line | Copies a single line
logger | Enters the given message into the system log
look | Displays lines that begin with the given string
losetup | Sets up and controls loop devices
mcookie | Generates magic cookies (128-bit random hexadecimal numbers) for xauth
mkfs | Builds a file system on a device (usually a hard disk partition)
mkfs.bfs | Creates a Santa Cruz Operations (SCO) bfs file system
mkfs.cramfs | Creates a cramfs file system
mkfs.minix | Creates a Minix file system
mkswap | Initializes the given device or file to be used as a swap area
more | A filter for paging through text one screen at a time
mount | Attaches the file system on the given device to a specified directory in the file-system tree
namei | Shows the symbolic links in the given pathnames
pg | Displays a text file one screen full at a time
pivot_root | Makes the given file system the new root file system of the current process
ramsize | Sets the size of the RAM disk in a bootable image
raw | Used to bind a Linux raw character device to a block device
rdev | Queries and sets the root device, among other things, in a bootable image
readprofile | Reads kernel profiling information
rename | Renames the given files, replacing a given string with another
renice | Alters the priority of running processes
rev | Reverses the lines of a given file
rootflags | Sets the rootflags in a bootable image
script | Makes a typescript of a terminal session
setfdprm | Sets user-provided floppy disk parameters
setsid | Runs the given program in a new session
setterm | Sets terminal attributes
sfdisk | A disk partition table manipulator
swapoff | Disables devices and files for paging and swapping
swapon | Enables devices and files for paging and swapping and lists the devices and files currently in use
tailf | Tracks the growth of a log file. Displays the last 10 lines of a log file, then continues displaying any new entries in the log file as they are created
tunelp | Tunes the parameters of the line printer
ul | A filter for translating underscores into escape sequences indicating underlining for the terminal in use
umount | Disconnects a file system from the system's file tree
vidmode | Sets the video mode in a bootable image
whereis | Reports the location of the binary, source, and man page for the given command
write | Sends a message to the given user if that user has not disabled receipt of such messages

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