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FMT(1)                      General Commands Manual                     FMT(1)

       fmt, fmt_mail - simple text and mail-message formatters

       fmt [ -cs ] [ -width ] [ inputfile...  ]

       fmt_mail [ -cs ] [ -width ] [ inputfile ...  ]

       fmt  is  a  simple text formatter that fills and joins lines to produce
       output lines of (up to) the  number  of  characters  specified  in  the
       -width  option.   The default width is 72.  fmt concatenates the input-
       files listed as arguments.  If none are given, fmt  formats  text  from
       the standard input.

       Blank  lines  are  preserved  in  the output, as is the spacing between
       words.  fmt does not fill lines beginning with `.',  for  compatibility
       with  nroff(1).   Nor does it fill lines starting with `From:' (but for
       full compatibility with mail(1), use fmt_mail).

       Indentation is preserved in the output, and input lines with  differing
       indentation are not joined (unless -c is used).

       fmt  can  also be used as an in-line text filter for vi(1); the vi com-


       reformats the text between the cursor location and the end of the para-

       fmt_mail  is  a script that formats and sends mail messages.  It leaves
       mail header lines untouched, and runs  the  remainder  of  the  message
       through  fmt -s.  The resulting message is passed along to sendmail(8),
       which routes it to the recipient.

       -c     Crown margin mode. Preserve the indentation  of  the  first  two
              lines within a paragraph, and align the left margin of each sub-
              sequent line with that of the second line.  This is  useful  for
              tagged paragraphs.

       -s     Split  lines only.  Do not join short lines to form longer ones.
              This prevents sample lines of code, and other  such  "formatted"
              text, from being unduly combined.

       -width Fill output lines to up to width columns.

       The  environment  variables  LC_CTYPE, LANG, and LC_default control the
       character classification throughout fmt.  On entry to fmt, these  envi-
       ronment  variables  are checked in the following order: LC_CTYPE, LANG,
       and LC_default.  When a valid value  is  found,  remaining  environment
       variables for character classification are ignored.  For example, a new
       setting for LANG does not override the current valid character  classi-
       fication  rules  of  LC_CTYPE.   When  none of the values is valid, the
       shell character classification defaults to the POSIX.1 "C" locale.

       mail(1), nroff(1), vi(1)

                               28 December 1987                         FMT(1)