Delete lines in a file

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delete all lines in file

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LEARN ABOUT SUNOS

fmt

fmt(1)								   User Commands							    fmt(1)

NAME

       fmt - simple text formatters

SYNOPSIS

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

DESCRIPTION

       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 -w
       width option. The default  width is 72. fmt concatenates the inputfiles 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 nor split lines beginning with a `.' (dot), for
       compatibility with
	nroff(1). Nor does it fill or split a set of contiguous non-blank lines which is determined to be a mail header, the first line  of  which
       must begin with "From".

       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 command:

	      !}fmt

       reformats the text between the cursor location and the end of the paragraph.

OPTIONS

       -c		       Crown margin mode. Preserve the indentation of the first two lines within a paragraph, and align the left margin of
			       each subsequent 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.

       -w width | -width       Fill output lines to up to  width columns.

OPERANDS

       inputfile       Input file.

ENVIRONMENT VARIABLES

       See environ(5) for a description of the LC_CTYPE environment variable that affects the execution of fmt.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       nroff(1), vi(1), attributes(5), environ(5)

NOTES

       The -width option is acceptable for BSD compatibility, but it may go away in future releases.

SunOS 5.10							    9 May 1997								    fmt(1)

UNIX for Dummies Questions & Answers