CT320: Network and System Administration

Fall 2018


See this page as a slide show

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?


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


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

       cat - concatenate files and print on the standard output

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

       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

              output version information and exit

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

       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/>

       Written by Torbjorn Granlund and Richard M. Stallman.

       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.


       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-

              info coreutils 'cat invocation'

       should give you access to the complete manual.

GNU coreutils 8.22                 June 2018                            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

Edit History Source

Modified: 2018-06-24T18:00

Apply to CSU | Contact CSU | Disclaimer | Equal Opportunity
Colorado State University, Fort Collins, CO 80523 USA
© 2018 Colorado State University
CS Building