Linux 2.6 - man page for rcs (linux section 5)
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rcS(5) Debian Administrator's Manual rcS(5)
rcS - variables that affect the behavior of boot scripts
The /etc/default/rcS file contains variable settings in POSIX format:
Only one assignment is allowed per line. Comments (starting with '#') are also allowed.
The following variables can be set. For the default values please see
On boot the files in /tmp will be deleted if their modification time is more than
TMPTIME days ago. A value of 0 means that files are removed regardless of age. If
you don't want the system to clean /tmp then set TMPTIME to a negative value (e.g.,
-1) or to the word infinite.
Setting this to yes causes init to spawn a sulogin on the console early in the boot
process. If the administrator does not login then the sulogin session will time
out after 30 seconds and the boot process will continue.
Normally the system will not let non-root users log in until the boot process is
complete and the system has finished switching to the default runlevel (usually
level 2). However, in theory it is safe to log in a bit earlier, namely, as soon
as inetd has started. Setting the variable to no allows earlier login; setting the
variable to yes prevents it.
Some details: The DELAYLOGIN variable controls whether or not the file
/var/lib/initscripts/nologin is created during the boot process and deleted at the
end of it. /etc/nologin is normally a symbolic link to the latter location, and
the login(1) program refuses to allow non-root logins so long as (the target of)
/etc/nologin exists. If you set the variable to no then it is advisable to ensure
that /var/lib/initscripts/nologin does not exist.
UTC This is used to govern how the hardware real time clock is interpreted when it is
read (e.g., at boot time, for the purpose of setting the system clock) and when it
is written (e.g., at shutdown). If this option is set to no then the system clock
is assumed to be set to local time. If the option is set to yes then the system
clock is assumed to be set to something approximating Coordinated Universal Time
(UTC). (POSIX systems keep a variant of UTC, without leap seconds.)
On contemporary Debian systems (although change has been requested at
http://bugs.debian.org/346342), if UTC is set to no then /usr/share/zoneinfo must
be readable early in the boot process. If you want to keep /usr on a separate
filesystem then you must still ensure that the target of /etc/localtime points to
the correct zone information file for the time zone of the time kept in your hard-
ware real time clock.
Setting this option to no (in lower case) will make the boot process a bit less
verbose. Setting this option to yes will make the boot process a bit more verbose.
When the root and all other file systems are checked, fsck is invoked with the -a
option which means "autorepair". If there are major inconsistencies then the fsck
process will bail out. The system will print a message asking the administrator to
repair the file system manually and will present a root shell prompt (actually a
sulogin prompt) on the console. Setting this option to yes causes the fsck com-
mands to be run with the -y option instead of the -a option. This will tell fsck
always to repair the file systems without asking for permission.
The EDITMOTD and RAMRUN variables are no longer used.
Miquel van Smoorenburg <email@example.com>
inetd(8), init(8), inittab(5), login(1).
16 Jan 2006 rcS(5)
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