'\" t
.TH "KERNEL\-INSTALL" "8" "" "systemd 219" "kernel-install"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
kernel-install \- Add and remove kernel and initramfs images to and from /boot
.SH "SYNOPSIS"
.HP \w'\fBkernel\-install\fR\ 'u
\fBkernel\-install\fR COMMAND \fIKERNEL\-VERSION\fR [\fIKERNEL\-IMAGE\fR]
.SH "DESCRIPTION"
.PP
\fBkernel\-install\fR
is used to install and remove kernel and initramfs images to and from
/boot\&.
.PP
\fBkernel\-install\fR
will execute the files located in the directory
/usr/lib/kernel/install\&.d/
and the local administration directory
/etc/kernel/install\&.d/\&. All files are collectively sorted and executed in lexical order, regardless of the directory in which they live\&. However, files with identical filenames replace each other\&. Files in
/etc/kernel/install\&.d/
take precedence over files with the same name in
/usr/lib/kernel/install\&.d/\&. This can be used to override a system\-supplied executables with a local file if needed; a symbolic link in
/etc/kernel/install\&.d/
with the same name as an executable in
/usr/lib/kernel/install\&.d/, pointing to /dev/null, disables the executable entirely\&. Executables must have the extension
"\&.install"; other extensions are ignored\&.
.SH "COMMANDS"
.PP
The following commands are understood:
.PP
\fBadd \fR\fB\fIKERNEL\-VERSION\fR\fR\fB \fR\fB\fIKERNEL\-IMAGE\fR\fR
.RS 4
\fBkernel\-install\fR
creates the directory
/boot/\fIMACHINE\-ID\fR/\fIKERNEL\-VERSION\fR/
and calls every executable
/usr/lib/kernel/install\&.d/*\&.install
and
/etc/kernel/install\&.d/*\&.install
with the arguments
.sp
.if n \{\
.RS 4
.\}
.nf
add \fIKERNEL\-VERSION\fR /boot/\fIMACHINE\-ID\fR/\fIKERNEL\-VERSION\fR/
.fi
.if n \{\
.RE
.\}
.sp
The kernel\-install plugin
50\-depmod\&.install
runs depmod for the
\fIKERNEL\-VERSION\fR\&.
.sp
The kernel\-install plugin
90\-loaderentry\&.install
copies
\fIKERNEL\-IMAGE\fR
to
/boot/\fIMACHINE\-ID\fR/\fIKERNEL\-VERSION\fR/linux\&. It also creates a boot loader entry according to the boot loader specification in
/boot/loader/entries/\fIMACHINE\-ID\fR\-\fIKERNEL\-VERSION\fR\&.conf\&. The title of the entry is the
\fIPRETTY_NAME\fR
parameter specified in
/etc/os\-release
or
/usr/lib/os\-release
(if the former is missing), or "Linux
\fIKERNEL\-VERSION\fR", if unset\&. If the file
initrd
is found next to the
linux
file, the initrd will be added to the configuration\&.
.RE
.PP
\fBremove \fR\fB\fIKERNEL\-VERSION\fR\fR
.RS 4
Calls every executable
/usr/lib/kernel/install\&.d/*\&.install
and
/etc/kernel/install\&.d/*\&.install
with the arguments
.sp
.if n \{\
.RS 4
.\}
.nf
remove \fIKERNEL\-VERSION\fR /boot/\fIMACHINE\-ID\fR/\fIKERNEL\-VERSION\fR/
.fi
.if n \{\
.RE
.\}
.sp
\fBkernel\-install\fR
removes the entire directory
/boot/\fIMACHINE\-ID\fR/\fIKERNEL\-VERSION\fR/
afterwards\&.
.sp
The kernel\-install plugin
90\-loaderentry\&.install
removes the file
/boot/loader/entries/\fIMACHINE\-ID\fR\-\fIKERNEL\-VERSION\fR\&.conf\&.
.RE
.SH "EXIT STATUS"
.PP
If every executable returns with 0, 0 is returned, a non\-zero failure code otherwise\&.
.SH "FILES"
.PP
/usr/lib/kernel/install\&.d/*\&.install /etc/kernel/install\&.d/*\&.install
.RS 4
Drop\-in files which are executed by kernel\-install\&.
.RE
.PP
/etc/kernel/cmdline /proc/cmdline
.RS 4
The content of the file
/etc/kernel/cmdline
specifies the kernel command line to use\&. If that file does not exist,
/proc/cmdline
is used\&.
.RE
.PP
/etc/machine\-id
.RS 4
The content of the file specifies the machine identification
\fIMACHINE\-ID\fR\&.
.RE
.PP
/etc/os\-release /usr/lib/os\-release
.RS 4
The content of the file specifies the operating system title
\fIPRETTY_NAME\fR\&.
.RE
.SH "SEE ALSO"
.PP
\fBmachine-id\fR(5),
\fBos-release\fR(5),
\m[blue]\fBBoot loader specification\fR\m[]\&\s-2\u[1]\d\s+2
.SH "NOTES"
.IP " 1." 4
Boot loader specification
.RS 4
\%http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec
.RE