head

 

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 User Commands                                             head(1)
 
 
 


NAME
      head - display first few lines of files
 


SYNOPSIS
      head [ -number | -n number ]  [ filename ... ]
 


DESCRIPTION
      The head utility copies the first number of  lines  of  each
      filename  to  the  standard output. If no filename is given,
      head copies lines from the standard input. The default value
      of number is 10 lines.
 
      When more than one file is specified, the start of each file
      will look like:
 
 
      ==> filename <==
 
      Thus, a common way to display a set of short files,  identi-
      fying each one, is:
 
 
      example% head -9999 filename1 filename2 ...
 
 


OPTIONS
      The following options are supported:
 
      -n number
            The first number lines of  each  input  file  will  be
            copied  to standard output. The number option-argument
            must be a positive decimal integer.
 
      -number
            The number argument is a positive decimal integer with
            the same effect as the -n number option.
 
      If no options are specified, head will act as  if  -n  10had
      been specified.
 


OPERANDS
      The following operand is supported:
 
      file  A path name of an input file. If no file operands  are
            specified, the standard input will be used.
 
 USAGE
      See largefile(5) for the description of the behavior of head
      when encountering files greater than or equal to 2 Gbyte ( 2
     **31 bytes).
 
 
 
 
 
 SunOS 5.8            Last change: 1 Feb 1995                    1
 
 
 
 
 
 
 User Commands                                             head(1)
 
 
 
 EXAMPLES
      Example 1: Writing the first ten lines of all files
 
      To write the first ten lines of all files (except those with
      a leading period) in the directory:
 
      example% head *
 
 ENVIRONMENT VARIABLES
      See environ(5) for descriptions of the following environment
      variables  that  affect  the  execution  of  head: LC_CTYPE,
      LC_MESSAGES, and NLSPATH.
 
 EXIT STATUS
      The following exit values are returned:
 
      0     Successful completion.
 
      >0    An error occurred.
 


ATTRIBUTES
      See attributes(5) for descriptions of the  following  attri-
      butes:
 
      ____________________________________________________________
     |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
     |_____________________________|_____________________________|
     | Availability                | SUNWcsu                     |
     |_____________________________|_____________________________|
     | CSI                         | enabled                     |
     |_____________________________|_____________________________|
 
 


SEE ALSO
      cat(1), more(1), pg(1), tail(1), attributes(5),  environ(5),
      largefile(5)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 SunOS 5.8            Last change: 1 Feb 1995                    2
 
 
 

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