IT Trends That Will Boost Global Economic Growth

<p dir="ltr">
  Here are some <a href="https://techjury.net/blog/information-technology-trends/">IT trends</a> that are expected to further boost the economy in the near future.
</p>

<p dir="ltr">
  IT Trends That Will Boost Economic Growth
</p>

<p dir="ltr">
  Artificial Intelligence
</p>

<p dir="ltr">
  This is the use of robots and artificial intelligence to carry out task previously done by humans. AI tech and its related technologies will help boost economic growth by creating many new jobs, increase production efficiency, reduce costs, and improve the quality of products.
</p>

<p dir="ltr">
  5G
</p>

<p dir="ltr">
  <a href="https://www.techradar.com/news/what-is-5g-everything-you-need-to-know">5G</a> is the next generation of mobile wireless network technology. It is believed that 5G will improve customer experiences and business utility via effective connectivity and faster data transmission.
</p>

<p dir="ltr">
  5G stands as a change from previous generations of mobile technology. It enables lower latency, thereby reducing the time signals need to travel through the network. This makes it possible for it to support a wider range of applications, robotics, and the Internet-of-Things (IoT).
</p>

<p dir="ltr">
  Blockchain Technology
</p>

<p dir="ltr">
  The use of blockchain technology has grown steadily over the years. The healthcare sector is the major user, closely followed by financial institutions. Blockchain technology has a lot of untapped potentials, as it helps to improve transparency, reduce transaction costs, reduce frauds, increase overall operating efficiency, etc.
</p>

<p dir="ltr">
  Three-Dimensional (3D) Printing
</p>

<p dir="ltr">
  <a href="https://3dprinting.com/what-is-3d-printing/">3D printing</a> is rapidly changing the way we live and conduct businesses. 3D technology is already being used in several industries for a wide range of purposes. It will also be of great use in the healthcare sector, manufacturing industries, and so on.
</p>

<p dir="ltr">
  To learn more about these and other IT trends, check out the infographic <a href="http://blog.amit-agarwal.co.in/2019/04/15/how-much-money-flows-through-it/">here</a>.
</p>

Fedora – dnsmasq with NetworkManager

I have been thinking of writing about this for long time but someone else did and it is nice write-up so here is the link – https://fedoramagazine.org/using-the-networkmanagers-dnsmasq-plugin/

GREP_COLORS – change the colors in the GREP output.

Today we will look at the variable GREP_COLORS. This variable determines the colour that is used with the grep command. You can look at the man page of the grep command to see what the various options mean. Here is the excerpt from the man command:

GREP_COLORS

          Specifies the colors and other attributes used to highlight various  parts  of  the
          output.   Its  value  is  a  colon-separated  list of capabilities that defaults to
          ms=01;31:mc=01;31:sl=:cx=:fn=35:ln=32:bn=32:se=36  with  the  rv  and  ne   boolean
          capabilities omitted (i.e., false).  Supported capabilities are as follows.

          sl=    SGR  <a class="zem_slink" title="Substring" href="http://en.wikipedia.org/wiki/Substring" rel="wikipedia">substring</a>  for  whole  selected lines (i.e., matching lines when the -v
                 command-line option is omitted, or non-matching lines when -v is specified).
                 If however the boolean rv capability and the -v command-line option are both
                 specified, it applies to context matching lines  instead.   The  <a class="zem_slink" title="Default (finance)" href="http://en.wikipedia.org/wiki/Default_%28finance%29" rel="wikipedia">default</a>  is
                 empty (i.e., the terminal's default color pair).

          cx=    SGR  substring for whole context lines (i.e., non-matching lines when the -v
                 command-line option is omitted, or matching lines when -v is specified).  If
                 however  the  boolean  rv capability and the -v command-line option are both
                 specified, it applies to selected non-matching lines instead.   The  default
                 is empty (i.e., the terminal's default color pair).

          rv     <a class="zem_slink" title="Boolean data type" href="http://en.wikipedia.org/wiki/Boolean_data_type" rel="wikipedia">Boolean  value</a>  that  reverses  (swaps)  the  meanings  of  the  sl= and cx=
                 capabilities when the -v command-line option is specified.  The  default  is
                 false (i.e., the capability is omitted).

          mt=01;31
                 SGR  substring  for  matching  <a class="zem_slink" title="Empty set" href="http://en.wikipedia.org/wiki/Empty_set" rel="wikipedia">non-empty</a>  text in any matching line (i.e., a
                 selected line when the -v command-line option is omitted, or a context  line
                 when  -v  is specified).  Setting this is equivalent to setting both ms= and
                 mc= at once to the same value.  The default is a bold  red  text  foreground
                 over the current line background.

          ms=01;31
                 SGR substring for matching non-empty text in a selected line.  (This is only
                 used when the -v command-line option is omitted.)  The effect of the sl= (or
                 cx=  if  rv) capability remains active when this kicks in.  The default is a
                 bold red text foreground over the current line background.

          mc=01;31
                 SGR substring for matching non-empty text in a context line.  (This is  only
                 used  when  the -v command-line option is specified.)  The effect of the cx=
                 (or sl= if rv) capability remains active when this kicks in.  The default is
                 a bold red text foreground over the current line background.

          fn=35  SGR  substring  for file names prefixing any content line.  The default is a
                 magenta text foreground over the terminal's default background.

          ln=32  SGR substring for <a class="zem_slink" title="Line number" href="http://en.wikipedia.org/wiki/Line_number" rel="wikipedia">line numbers</a> prefixing any content line.  The default is a
                 green text foreground over the terminal's default background.

          bn=32  SGR substring for byte offsets prefixing any content line.  The default is a
                 green text foreground over the terminal's default background.

          se=36  SGR substring for separators that are inserted between selected line  fields
                 (:),  between context line fields, (-), and between groups of adjacent lines
                 when nonzero context  is  specified  (--).   The  default  is  a  cyan  text
                 foreground over the terminal's default background.

          ne     Boolean  value that prevents clearing to the <a class="zem_slink" title="Newline" href="http://en.wikipedia.org/wiki/Newline" rel="wikipedia">end of line</a> using Erase in Line
                 (EL) to Right (\33[K) each time a colorized item ends.  This  is  needed  on
                 terminals on which EL is not supported.  It is otherwise useful on terminals
                 for which the back_color_erase (bce) boolean terminfo  capability  does  not
                 apply,  when  the  chosen  highlight colors do not affect the background, or
                 when EL is too slow or causes too much flicker.  The default is false (i.e.,
                 the capability is omitted).

How much money flows through IT

Check out this amazing infographic

Global IT Economics [Infographic]

copy /proc folder

Other day, I was trying to copy the proc folder with following command:

tar cvzf /tmp/proc.tgz /proc

and I found out that all the files in tar were empty. Strange it may seem but lot of people are facing this as /proc is not a regular filesystem, so I wrote a quick script to copy the proc folder. Here is the script:

cd /
mkdir /tmp/proc
[[ -z $1 ]] && exit -1
find /proc/$1/ -not -name pagemap | while read F ; do
    D=/tmp/$F
    if [[ -d $F ]]
    then
        echo "$(ls -ld $F) => Directory"
        mkdir -p $D
    fi
    if [[ -L $F ]]
    then
        echo "$(ls -ld $F) => copied"
        cp -P $F /tmp/$F
        
    elif [[ -f $F ]]
    then
        echo "$(ls -ld $F) => Cat"
        cat $F > /tmp/$F
    else
        echo "Dont know $F"
    fi
done

cool sed/grep magic to convert output to csv format

I generallly keep doing this a lot, so thought will share with you. Lets assume we are capturing free ouput every min/hour/or whatever. The output looks like this:

Time: Mon Jan 21 23:59:10 AEDT 2019
——————-

total        used        free      shared  buff/cache   available
Mem:          32014        8656        1735        1697       21621       21308
Swap: 51195 75 51120

then we can use some grep and sed to convert this to something like this:

Mon Jan 21 23:59:10 AEDT 2019,32014,8656,1735,1697,21621,21308

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Gnome with i3 on Fedora 29

I have been thinking of doing this for long time, finally I managed to get this working. Here is what you need to do to get i3 with all other gnome services running.

First we will create 2 files, this is actually all you need. In these ones, I copied the original gnome files and just change gnome-shell to i3 to replace my window manager.

11:15:43=>[]> cat /usr/share/gnome-session/sessions/gnome-i3.session
[GNOME Session]
Name=GNOME + i3
# RequiredComponents=gnome-flashback-init;gnome-flashback;i3;gnome-settings-daemon;
RequiredComponents=i3;org.gnome.SettingsDaemon.A11ySettings;org.gnome.SettingsDaemon.Clipboard;org.gnome.SettingsDaemon.Color;org.gnome.SettingsDaemon.Datetime;org.gnome.SettingsDaemon.Housekeeping;org.gnome.SettingsDaemon.Keyboard;org.gnome.SettingsDaemon.MediaKeys;org.gnome.SettingsDaemon.Mouse;org.gnome.SettingsDaemon.Power;org.gnome.SettingsDaemon.PrintNotifications;org.gnome.SettingsDaemon.Rfkill;org.gnome.SettingsDaemon.ScreensaverProxy;org.gnome.SettingsDaemon.Sharing;org.gnome.SettingsDaemon.Smartcard;org.gnome.SettingsDaemon.Sound;org.gnome.SettingsDaemon.Wacom;org.gnome.SettingsDaemon.XSettings;
11:15:47=>[]> cat /usr/share/xsessions/gnome-i3.desktop
[Desktop Entry]
Name=GNOME i3
Comment=This session logs you into GNOME + i3
Exec=env GNOME_SHELL_SESSION_MODE=gnome-i3 gnome-session –session gnome-i3
TryExec=gnome-session
Type=Application
DesktopNames=GNOME-Classic;GNOME;

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