Google?s Self-Inflicted Denial-of-Service Attack

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Denial Of Service Attack Update

Dear All, We were hit with a denial of service (DOS) attack today beginning around June 12th 2019 @ 01:27:51 PM from an IP address registered to "RACKWEB-NET" in Bulgaria. I was notified about this around June 12th 2019 @ 03:05 PM and did some log file analysis and discovered how the attack...

2. Programming

Blitzkrieg Attack Algorithm - Is It A Google Trade Secret?

Hello, I have conducted a series of investigations into lexicon data structures, and smaller really does mean faster, but a graph compression algorithm with instantaneous run time is not an area I decided to research until now. Initially, I was primarily concerned with the functionality and...

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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

       -s, --separator=STRING
	      use STRING as the separator instead of newline

       --help display this help and exit

       --version
	      output version information and exit

AUTHOR

       Written by Jay Lepreau and David MacKenzie.

REPORTING BUGS

       Report tac bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report tac translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2010 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       rev(1).

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

	      info coreutils 'tac invocation'

       should give you access to the complete manual.

GNU coreutils 8.5						   February 2011							    TAC(1)

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