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ltf(1)									ltf(1)

Name
       ltf - labeled tape facility

Syntax
       ltf option[keys] file...

Description
       The  command  reads and writes single-volume Versions 3 and 4 ANSI-com‐
       patible tape volumes.  For a description of the label conventions,  see
       The  file  argument specifies each file or directory name that is to be
       processed.  If a directory name is specified,  the  complete  directory
       tree is processed.

Options
       The actions of are controlled by one of the following option characters
       that must appear as the first command-line argument: -c,	 -H,  -t,  and
       -x.

       -c ®Creates  a  new  volume  assigning  an interchange file name to the
	  files on the volume.	That is, initializes  the  volume  and	writes
	  each named file onto the output file.	 Then assigns an “interchange”
	  file name to the files being created on the  volume.	 This  “inter‐
	  change”  file	 name is a name that can be recognized by a non-ULTRIX
	  system.  (Permissible ULTRIX file names are not allowed in all forms
	  of  ANSI  volumes).	This  file name is 17 characters in length and
	  includes only capital letters and the	 “a”  characters,  see	It  is
	  formed  by converting all lower case letters to upper case, convert‐
	  ing non-“a” characters to upper case Z, and truncating the resultant
	  string  to 17 characters.  If ANSI Version 4 volumes are being used,
	  the original ULTRIX file name is preserved in HDR3 through HDR9  and
	  EOF3 through EOF9.  For further information, see

       -H Displays help messages for all options and keys.

       -t Lists	 each named file on the specified volume.  If no file argument
	  is given, information about all files on the volume is provided.  If
	  -t is used without v or V (verbose keys), the interchange file names
	  are also included in the list.

       -x Extracts each named file from	 the  volume  to  the  user's  current
	  directory.   If no file argument is given, the entire content of the
	  volume is extracted.	If the p key is not specified when  extracting
	  files	 from  a  volume  written  by  an ULTRIX system, the files are
	  restored to the current user and group IDs and to the	 mode  set  by
	  the system call.

Keys
       The  following  optional	 keys  can  be	specified to enable or disable
       actions as specified:

       a  Outputs an ANSI-compatible Version 3 format volume.  This key can be
	  used	with  the -c option only.  The default version is 4.  For fur‐
	  ther information, see

       h  Write to a tape volume the file  that	 a  symbolic  link  points  to
	  instead of creating the symbolic link on a volume.  The file written
	  to the tape now has the same name as the symbolic  link.   This  key
	  can be used with the -c option only.	When extracting, if a symbolic
	  link exists in the current directory that has the  same  name	 as  a
	  file	on the tape volume, the link is followed and the file that the
	  symbolic link currently points to is overwritten with the  extracted
	  file.	 To avoid overwriting files, use the w key.

       o  Omits directory blocks from the output volume.  When creating a vol‐
	  ume, the directory files are omitted, and when listing  or  extract‐
	  ing, the V key is disabled.

       O  Omits	 usage	of optional headers HDR3 through HDR9 and EOF3 through
	  EOF9.	 For further information, see If  a  file  is  created	on  an
	  ULTRIX  system without the use of the O key, these file headers con‐
	  tain the complete ULTRIX disk file name.   Some  non-ULTRIX  systems
	  are  not  able  to  process  volumes containing these header labels.
	  Thus, it is helpful to use this qualifier to avoid unnecessary error
	  messages when planning to use non-ULTRIX systems.

       p  Restores  files to original mode, user ID and group ID that is writ‐
	  ten on the tape volume.  This key can be used with the -x option  on
	  ULTRIX files and by the superuser only.

       v  Displays  long  form	information about volume and files.  Normally,
	  operates with little terminal output.

	  When used in conjunction with the -t option, v gives	more  informa‐
	  tion about the volume entries than when used in conjunction with the
	  -c and -x options. The following line is  typical  output  from  -tv
	  functions.
	  ltf:	Volume ID is:  ULTRIX	Volume is:  ANSI Version #4
	  ltf:	Owner  ID is:  OwnerID
	  ltf:	Implementation ID is:	SystemID
	  ltf:	Volume	created	  on:	System

	  t(1,1) rw-r--r-- 103/3 owner Feb 2 12:34 2530 bytes <cc >D file1
	  t(2,1) rw-r--r-- 103/3 owner Jun 29 09:34 999 bytes <com>D file2
	  t(3,1) rwxrwxrwx 293/10 name Jan 24 10:20 1234 bytes <bin>F name
	  t(4,1) --xrwx--- 199/04 theowner Jan 24 10:21 12345 bytes <asc>D
			  long file name
	  The  first field contains the file sequence number and the file sec‐
	  tion number of the file.  If an ULTRIX system	 created  the  labeled
	  volume,   the	  second  and  third  fields  contain  the  mode,  and
	  owner/group ID of the file.  Otherwise, these two fields are	filled
	  with	dashes.	  The  fourth field contains the file owner name.  The
	  fifth field contains latest modification time.  The year is included
	  if  the  modification	 time is older than Jan 1 of the current year.
	  The sixth field contains the number of bytes used on the volume  for
	  the file.  If the volume is non-ULTRIX, this field contains the num‐
	  ber of blocks with the block size in parenthesis.  The seventh field
	  contains  the	 ANSI  file  type (angle brackets) and the file record
	  format (one character suffix).   The	file  record  formats  are:  F
	  (fixed   length),  D	(variable  length),  or	 S  (spanned/segmented
	  records).  The eighth (last) field contains the name	of  the	 file.
	  If the file name does not fit within the 12 spaces left in the line,
	  the name appears on the next line preceded by a carriage return.   A
	  long	file  name will be continued over one or more lines thus it is
	  recommended to keep auto wrap on in the terminal setup.  Also	 if  a
	  file	on  a  volume  is  either a symbolic or hard link, information
	  about the linked file is displayed on the next line, preceded	 by  a
	  carriage return.

       V  Displays verbose information about directories.

       w  Warns	 the  user  if	file name is in danger of being truncated when
	  using -c or if it could be overwritten using -x.  Normally, operates
	  silently and does not let the user know what is happening.  When -cw
	  is specified, displays two warning messages if the interchange  name
	  and  the  ULTRIX file name are not the same.	When -xw is specified,
	  displays a warning message if a file is  about  to  be  overwritten.
	  Another  message  is	displayed asking for approval to overwrite the
	  file.	 If the user types no  or  presses  return,  then  the	option
	  exists to type in a new file name or press return to quit.  If a new
	  file name is typed, this name is also checked.  Thus, does not  con‐
	  tinue until a unique file name is typed.  When -x is specified, does
	  not warn the user if a directory name already exists.

       0..31
	  Selects a unit number for a named tape device.  These	 unit  numbers
	  can be entered when using the default tape name, /dev/rmt0h.

       The following optional keys require an additional argument to be speci‐
       fied on the command line.  If two or more of these keys are used, their
       respective arguments are to appear in the exact order that the keys are
       specified.

       B size
	  Set the blocking factor to size.  This specifies the maximum	number
	  of bytes that can be written in a block on a volume.	If no value is
	  specified, size defaults to 2048 bytes.  The maximum size  is	 20480
	  bytes	 and  the  minimum  size  is 18 bytes.	The B key need only be
	  specified with -c.

	  The size may be specified as n bytes, (where n is assumed to be dec‐
	  imal)	 or  as	 nb, (a multiple of 512 bytes using n followed by 'b',
	  where 'b' signifies the multiple of 512) or as nk,  (a  multiple  of
	  1024 bytes using n followed by 'k', where 'k' signifies the multiple
	  of 1024).

       f device
	  Sets the device file name to device.	 The  default  is  /dev/rmt0h.
	  The use of the f key overrides the 0..31 keys.

       I file
	  Allows file name to be supplied either interactively or from a spec‐
	  ified file.  Normally, expects the argument file names to be part of
	  the  command line.  The I key allows the user to enter argument file
	  names either interactively or from a specified file.	If file	 is  a
	  dash (-), reads standard input and prompts for all required informa‐
	  tion.	 All of the file names are requested first, followed by a sin‐
	  gle  return  before the arguments are processed.  If file is a valid
	  file name, file is opened and read to obtain argument file names.

       L label
	  Specifies a six-character  volume  identifier	 label.	  The  default
	  label for ULTRIX systems is 'ULTRIX'.

       P position
	  Specifies  file  sequence and section number at which volume will be
	  positioned, using #,#.  The first #, represents  the	file  sequence
	  number,  while second #, the file section number.  The file sequence
	  number begins at 1 and is incremented for each file in  the  current
	  file	set.  Since this implementation of only produces one file set,
	  the file sequence number for volumes written with  this  implementa‐
	  tion	is the number of the file as it is written on the volume.  The
	  file section number begins at 1 and is  incremented  for  each  file
	  section  on any one volume.  This number is necessary when files are
	  written in multi-volume format where the need may exist to  split  a
	  file	across	volumes;  however  since this implementation of writes
	  only single volumes, the file section number is always 1 for volumes
	  written  with	 this implementation.  If no file arguments are speci‐
	  fied, all files from the position number to the end of the tape  are
	  listed or extracted.	Otherwise, particular files that exist between
	  the position number and the  end  of	the  tape  can	be  listed  or
	  extracted.   A  warning  message appears if a file is requested that
	  exists before the position number specified.	The P  key  cannot  be
	  used with the -c option.

Examples
       ltf -cfB /dev/rmt0h 100 file1 file2 file3
       This  example  creates  a  new volume for file1, file2, and file3 using
       device /dev/rmt0h (f key) and a blocking factor of 100 (B key).

Restrictions
       The command does not support floppy diskettes or multi-volume tapes.

Diagnostics
       Diagnostics are written to the standard error file.  They come in  four
       forms:  fatal  errors, warnings, information, and prompts.  The command
       terminates when it detects that a fatal error has occurred.

       The diagnostics are intended to	be  self-explanatory.	Their  general
       format is:
       ltf: FATAL > a fatal error message
       ltf: Warning > a warning or advisory message
       ltf: Info > an information message
       ltf: a prompt asking for input

See Also
       ltf(5)

									ltf(1)
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