👤
Home Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:
Select Section of Man Page:
Select Man Page Repository:

OpenSolaris 2009.06 - man page for tail (opensolaris section 1)

tail(1) 				  User Commands 				  tail(1)

NAME
       tail - deliver the last part of a file

SYNOPSIS
       /usr/bin/tail [+-s number [lbcr]] [file]

       /usr/bin/tail [-lbcr] [file]

       /usr/bin/tail [+- number [lbcf]] [file]

       /usr/bin/tail [-lbcf] [file]

       /usr/xpg4/bin/tail [-f | -r] [-c number | -n number] [file]

       /usr/xpg4/bin/tail [+- number [l | b | c] [f]] [file]

       /usr/xpg4/bin/tail [+- number [l] [f | r]] [file]

DESCRIPTION
       The  tail  utility  copies the named file to the standard output beginning at a designated
       place. If no file is named, the standard input is used.

       Copying begins at a point in the file indicated by the  -cnumber,  -nnumber,  or  +-number
       options (if +number is specified, begins at distance number from the beginning; if -number
       is specified, from the end of the input; if number is NULL, the value 10 is assumed). num-
       ber  is	counted  in units of lines or byte according to the -c	or  -n options, or lines,
       blocks, or bytes, according to the appended option l, b, or c. When no  units  are  speci-
       fied, counting is by lines.

OPTIONS
       The  following options are supported for both /usr/bin/tail and /usr/xpg4/bin/tail. The -r
       and -f options are mutually exclusive. If both are specified on the command line,  the  -f
       option is ignored.

       -b     Units of blocks.

       -c     Units of bytes.

       -f     Follow.  If  the input-file is not a pipe, the program does not terminate after the
	      line of the input-file has been copied, but enters  an  endless  loop,  wherein  it
	      sleeps  for  a  second  and then attempts to read and copy further records from the
	      input-file. Thus it can be used to monitor the growth of a file that is being writ-
	      ten by some other process.

       -l     Units of lines.

       -r     Reverse.	Copies	lines  from  the  specified starting point in the file in reverse
	      order. The default for r is to print the entire file in reverse order.

   /usr/xpg4/bin/tail
       The following options are supported for /usr/xpg4/bin/tail only:

       -c number     The number option-argument must be a decimal integer whose sign affects  the
		     location in the file, measured in bytes, to begin the copying:

		     +	      Copying starts relative to the beginning of the file.

		     -	      Copying starts relative to the end of the file.

		     none     Copying starts relative to the end of the file.

		     The origin for counting is 1; that is, -c+1 represents the first byte of the
		     file, -c-1 the last.

       -n number     Equivalent to -cnumber, except the starting location in the file is measured
		     in  lines instead of bytes. The origin for counting is 1. That is, -n+1 rep-
		     resents the first line of the file, -n-1 the last.

OPERANDS
       The following operand is supported:

       file	A path name of an input file. If no file operands  are	specified,  the  standard
		input is used.

USAGE
       See  largefile(5)  for  the  description  of  the behavior of tail when encountering files
       greater than or equal to 2 Gbyte ( 2^31 bytes).

EXAMPLES
       Example 1 Using the tail Command

       The following command prints the last ten lines of the file fred, followed  by  any  lines
       that are appended to fred between the time tail is initiated and killed.

	 example% tail -f fred

       The next command prints the last 15 bytes of the file fred, followed by any lines that are
       appended to fred between the time tail is initiated and killed:

	 example% tail -15cf fred

ENVIRONMENT VARIABLES
       See environ(5) for descriptions of the following environment  variables	that  affect  the
       execution of tail: LANG, LC_ALL, 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 attributes:

   /usr/bin/tail
       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+

   /usr/xpg4/bin/tail
       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWxcu4			   |
       +-----------------------------+-----------------------------+
       |CSI			     |Enabled			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+

SEE ALSO
       cat(1),	head(1),  more(1),  pg(1), dd(1M), attributes(5), environ(5), largefile(5), stan-
       dards(5)

NOTES
       Piped tails relative to the end of the file are stored in a buffer, and thus  are  limited
       in length. Various kinds of anomalous behavior can happen with character special files.

SunOS 5.11				   13 Jul 2005					  tail(1)


All times are GMT -4. The time now is 06:52 AM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
×
UNIX.COM Login
Username:
Password:  
Show Password





Not a Forum Member?
Forgot Password?