CT320: Network and System Administration

Fall 2018

Google

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CT320 Google

One size does not fit all

Google is the best search engine ever. However, that doesn’t mean that it’s the right tool for all jobs.

Try Googling:

Better Googling

OK, fine—we can do better than that:

Great! That worked! Or … did it?

Versions

There are many versions of Linux. When you Google “linux cat”, which version of cat does it tell you about?

man

% man cat
CAT(1)                           User Commands                          CAT(1)



NAME
       cat - concatenate files and print on the standard output

SYNOPSIS
       cat [OPTION]... [FILE]...

DESCRIPTION
       Concatenate FILE(s), or standard input, to standard output.

       -A, --show-all
              equivalent to -vET

       -b, --number-nonblank
              number nonempty output lines, overrides -n

       -e     equivalent to -vE

       -E, --show-ends
              display $ at end of each line

       -n, --number
              number all output lines

       -s, --squeeze-blank
              suppress repeated empty output lines

       -t     equivalent to -vT

       -T, --show-tabs
              display TAB characters as ^I

       -u     (ignored)

       -v, --show-nonprinting
              use ^ and M- notation, except for LFD and TAB

       --help display this help and exit

       --version
              output version information and exit

       With no FILE, or when FILE is -, read standard input.

EXAMPLES
       cat f - g
              Output f's contents, then standard input, then g's contents.

       cat    Copy standard input to standard output.

       GNU  coreutils  online  help:  <http://www.gnu.org/software/coreutils/>
       Report cat translation bugs to <http://translationproject.org/team/>

AUTHOR
       Written by Torbjorn Granlund and Richard M. Stallman.

COPYRIGHT
       Copyright (C) 2013 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
       tac(1)

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

              info coreutils 'cat invocation'

       should give you access to the complete manual.



GNU coreutils 8.22               December 2017                          CAT(1)

A better solution is to use the man command, from a terminal, to tell you about the version of cat that’s installed.

(% is my prompt.)

User: Guest

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Modified: 2018-06-24T18:00

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