inskern(1) —

NAME

inskern − install a kernel

SYNOPSIS

inskern [ −r root_directory ] [ −gshutdown_grace_period ] kernel_file

DESCRIPTION

The inskern command installs a new kernel. By default, the configuration directory is /etc/conf; this may be overridden by setting the environment variable $ROOT (see insdriver(1)) or by using the −r option on the command line. This root will be referred to as $ROOT throughout this manual entry.

Installing a new kernel consists of linking the new kernel to /unix, shutting down the system, and booting the new kernel.

The inskern command does the following. It links, if possible, and otherwise copies $ROOT/etc/conf/kconfig.d/kernel_file.d/kernel_file to /kernel_file, copies configuration files from /etc/conf/cf.d to /etc/conf/cf.d/OLD and from $ROOT/etc/conf/kconfig.d/kernel_file.d to /etc/conf/cf.d, echoes kernel_file to /etc/.new_unix, and executes /etc/shutdown. /etc/shutdown moves the current kernel (/unix) to /OLD.unix and links /kernel_file to /unix. Upon reboot, the default, /unix, will be the new kernel. If the new kernel cannot be linked to /unix, /OLD.unix is moved back to /unix and the configuration files are moved back from /etc/conf/cf.d/OLD to /etc/conf/cf.d.

Should the new kernel boot fail, reboot, and when the message:

Booting the UNIX System...

is displayed, quickly press the space bar and type /OLD.unix when prompted for the name of the kernel. After the system is up, move /OLD.unix to /unix, and move /etc/conf/cf.d/OLD/* to /etc/conf/cf.d.

EXAMPLES

The following command line reboots the system with /tmp/etc/conf/kconfig.d/unix.3.d/unix.3 as the new kernel:

inskern −r /tmp unix.3

The following command reboots the system with /etc/conf/kconfig.d/unix.3.d/unix.3 as the new kernel:

inskern unix.3

FILES

/etc/.new_unix

WARNINGS

The command inskern must be executed by the root user.

ADDED VALUE

This entry, supplied by INTERACTIVE Systems Corporation, is an extension of UNIX System V.

\*U — Version 1.0

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