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       fai - fully automatic installation


       fai [options] ACTION
       fai [options] dirinstall DIRECTORY


       fai starts an fai-action, e.g. an installation or a softupdate.  If the
       variable FAI_ACTION is defined, this  action  will  be  performed.  The
       command  line  argument  will override the value of FAI_ACTION. You can
       also define your own actions which will be executed when specified.


       ACTION is required.

       -C CFDIR
              Use CFDIR as the configuration directory. Default is /etc/fai.

       -c|--class class[,class]
              Define classes.  Multiple classes must be comma  separated.   If
              not  specified,  use  the  shell  environment  variable $classes
              (space separated).  The first class has lowest priority.

              Show help, version and summary of options.

              Renew the list of defined classes. By default, FAI uses the list
              of  classes  which was created during the first installation and
              skips calling fai-class(1). You need this option for  the  first
              softupdate  if  the  system  was not installed with FAI, you can
              also use it in subsequent runs.

       -s|--cspace <URL>
              URL of the config space. See fai.conf for  more  information  on
              the  format  and  which  types  of protocol are supported.  This
              overrides the setting of FAI_CONFIG_SRC in /etc/fai.

       -u|--hostname <HOSTNAME>
              Use this hostname instead the output of  the  hostname  command.
              This  is useful in conjunction with the dirinstall action, where
              you want to manually define a hostname that should be  used  for
              defining  classes  and  for  the  network setup and other stuff.
              There, you don't want the name of the host  where  you  run  fai
              dirinstall  to  be  used - because programs in a chroot, or in a
              virtualized OS instance should run  with  their  own  name,  and
              install their own set of classes.

              Create verbose output.


              starts a fully automatic installation:

              1. setup  the fai environment (create ramdisk, get configuration

              2. define classes and variables

              3. partition the local hard disk and create file systems

              4. install new software packages

              5. call configuration scripts

              6. check and save the logfiles

              starts a system rescue:

              1. setup the fai environment (create ramdisk, get  configuration

              2. define classes and variables

              3. do  different  types of hardware detection and print hardware

              4. save the logfiles

              starts a softupdate:

              1. fetch FAI configuration according to /etc/fai/fai.conf

              2. define classes and variables

              3. update the installed packages

              4. install new software

              5. call configuration scripts

              6. check and save the logfiles

       dirinstall [DIR]
              Installation into a directory. This is nearly the same action as
              install  except  for  skipping the task that partitions the hard
              disks and creates the file systems. Classes can be defined  with
              option  -c,  or by giving the hostname with -u or --hostname and
              enabling automatic definition by  class  scripts  from  hostname
              with -N. (Without -N class scripts aren't executed)


       Running with action "install" on a running system will almost certainly
       destroy it.


          fai  -v  -s  file:///srv/fai/config   -cDEFAULT,FAIBASE   dirinstall

       This  command will do an installation into the directory /src/etchroot.
       For defining variables, selecting the software packages and calling the
       customization script the classes DEFAULT, FAIBASE and LAST are used.


       This program is the central part of FAI (Fully Automatic Installation).
       See the FAI manual for more information on how to  use  FAI.   The  FAI
       homepage is


       This  manual  page  was  written  by  Henning  Glawe <glaweh@physik.fu-> and Thomas Lange <>.