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Full Discussion: Awk/sed summation of one column based on some entry in first column
Top Forums UNIX for Beginners Questions & Answers Awk/sed summation of one column based on some entry in first column Post 303041922 by kshitij on Saturday 7th of December 2019 06:25:00 AM
Old 12-07-2019
Thanks a lot Rudic ,

Could you give a brief explanation of this code, I am not able to get why we are selecting the field separator as " +"
?

Thanks and Regards
Kshitij Kulshreshtha
Last edited by RavinderSingh13; 12-07-2019 at 07:37 AM..
 

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tac

TAC(1)								   User Commands							    TAC(1)

NAME

       tac - concatenate and print files in reverse

SYNOPSIS

       tac [OPTION]... [FILE]...

DESCRIPTION

       Write each FILE to standard output, last line first.  With no FILE, or when FILE is -, read standard input.

       Mandatory arguments to long options are mandatory for short options too.

       -b, --before
	      attach the separator before instead of after

       -r, --regex
	      interpret the separator as a regular expression

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AUTHOR

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REPORTING BUGS

       Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

       Copyright (C) 2006 Free Software Foundation, Inc.
       This   is   free   software.    You   may   redistribute   copies   of	it   under   the   terms   of	the  GNU  General  Public  License
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SEE ALSO

       The full documentation for tac is maintained as a Texinfo manual.  If the info and tac programs are properly installed at  your	site,  the
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	      info tac

       should give you access to the complete manual.

ATTRIBUTES

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

       +--------------------+--------------------+
       |  ATTRIBUTE TYPE    |  ATTRIBUTE VALUE	 |
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NOTES

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tac 6.7 							   December 2006							    TAC(1)
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