mkfs man page on Plan9

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MKFS(8)								       MKFS(8)

       mkfs, mkext - archive or update a file system

       disk/mkfs  [-aprvxU]  [-d root] [-n name] [-s source] [-u users] [-z n]
       proto ...

       disk/mkext [-d name] [-u] [-h] [-v] [-x] [-T] file ...

       Mkfs copies files from the file tree source (default /) to a  kfs  file
       system  (see  kfs(4)).	The  kfs  service  is mounted on root (default
       /n/kfs), and /adm/users is copied to root/adm/users.  The  proto	 files
       are  read  (see	proto(2)  for their format) and any files specified in
       them that are out of date are copied to /n/kfs.

       Mkfs copies only those files that are out of  date.   Such  a  file  is
       first  copied  into  a  temporary  file	in the appropriate destination
       directory and then moved to the destination file.   Files  in  the  kfs
       file  system  that  are not specified in the proto file are not updated
       and not removed.

       The options to mkfs are:

       a      Instead of writing to a kfs file system, write an	 archive  file
	      to standard output, suitable for mkext.  All files in proto, not
	      just those out of date, are archived.

       x      For use with -a, this option writes a list of file names, dates,
	      and  sizes  to  standard output rather than producing an archive

       d root Copy files into the tree rooted at root (default /n/kfs).	  This
	      option  suppresses  setting  the uid and gid fields when copying
	      files.  Use -U to reenable it.

       n name Use as the name of the kfs service (default kfs).

       p      Update the permissions of a file even if it is up to date.

       r      Copy all files.

       s source
	      Copy from files rooted at the tree source.

       u users
	      Copy file users into /adm/users in the new system.

       v      Print the names of all of the files as they are copied.

       z n    Copy files assuming kfs block n (default 1024) bytes long.  If a
	      block contains only 0-valued bytes, it is not copied.

       Mkext  unpacks  archive files made by the -a option of mkfs.  Each file
       on the command line is unpacked in one pass through  the	 archive.   If
       the file is a directory, all files and subdirectories of that directory
       are also unpacked.  When a file is unpacked, the entire path is created
       if it does not exist.  If no files are specified, the entire archive is
       unpacked; in this case, missing intermediate directories are  not  cre‐
       ated.  The options are:

       d      specifies	 a  directory  (default /) to serve as the root of the
	      unpacked file system.

       u      sets the owners of the files created to correspond to  those  in
	      the archive and restores the modification times of the files.

       T      restores only the modification times of the files.

       v      prints the names and sizes of files as they are extracted.

       h      prints  headers  for  the	 files	on  standard output instead of
	      unpacking the files.

       Make an archive to establish a new file system:

	      disk/mkfs -a -u files/adm.users -s dist proto > arch

       Unpack that archive onto a new file system:

	      srv newfs
	      mount -c /srv/newfs /n/newfs
	      disk/mkext -u -d /n/newfs < arch

       Copy a subtree, from-dir, to another,  to-dir,  with  greater  fidelity
       than dircp:

	      disk/mkfs -a -s from-dir /sys/lib/sysconfig/proto/allproto |
		   disk/mkext -ud to-dir


       prep(8), kfscmd(8), sd(3), tar(1)

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