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rcS(5)                   Debian Administrator's Manual                  rcS(5)



 

NAME


       rcS - variables that affect the behavior of boot scripts

 

DESCRIPTION






       The /etc/default/rcS file contains variable settings in POSIX format:

            VAR=VAL

       Only  one assignment is allowed per line.  Comments (starting with '#')
       are also allowed.


 

OPTIONS


       The following variables can be set.  For the default values please  see
       /usr/share/initscripts/default.rcS.


 

       TMPTIME


              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 sys-
              tem to clean /tmp then set TMPTIME to a  negative  value  (e.g.,
              -1) or to the word infinite.


 

       SULOGIN


              Setting  this  to yes causes init to spawn a sulogin on the con-
              sole 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.


 

       DELAYLOGIN


              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;  set-
              ting 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 approxi-
              mating 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 hardware real time clock.


 

       VERBOSE


              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.


 

       FSCKFIX


              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 commands 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.


       RAMRUN Make  /var/run/  available  as  a ram file system (tmpfs).  Will
              also disable cleaning of /var/run/ during boot.  Set to 'yes' to
              enable,  to  'no' to disable.  The size of the tmpfs can be con-
              trolled using TMPFS_SIZE and RUN_SIZE in /etc/defaults/tmpfs.


 

       RAMLOCK


              Make /var/lock/ available as a ram file  system  (tmpfs).   Will
              also  disable  cleaning of /var/lock/ during boot.  Set to 'yes'
              to enable, to 'no' to disable.  The size of  the  tmpfs  can  be
              controlled     using     TMPFS_SIZE     and     LOCK_SIZE     in
              /etc/defaults/tmpfs.


 

       ASYNCMOUNTNFS


              Set this to 'no' to disable  asynchronous  mounting  of  network
              drives  when  the network interfaces are mounted, and instead do
              it only once when the machine boot.  The default is  'yes'.   It
              is  useful to disable this on machines with the root file system
              in NFS until ifup from ifupdown work properly in such setup.


 

NOTE


       The EDITMOTD variable is no longer used.


 

AUTHOR


       Miquel van Smoorenburg 


 

SEE ALSO


       inetd(8), init(8), inittab(5), login(1).



                                  16 Jan 2006                           rcS(5)