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Full Discussion: Print one sentence 40 to 50 words end with period in a file
Top Forums Shell Programming and Scripting Print one sentence 40 to 50 words end with period in a file Post 302952125 by Aia on Thursday 13th of August 2015 11:38:55 PM
Old 08-14-2015
Quote:
Originally Posted by lxdorney
Thanks very much,

If you could explain little by little much better for the benefit of all the beginners.
sed -n '/\(.\{99,154\}[^0-9]\.\).*/ {s//\1/p;q}' test.txt
Sure.
If it matches the pattern within the slashes execute the actions within the block {}. The block actions are, replace empty for the first matched group and print and quit.

The Perl line does it, almost the same way but in a less cryptic way. $& is the pattern matched.

Let's add a beginning of line anchor `^' to prevent the possibility of matching from the middle of the line.
Quote:
Originally Posted by Aia
Code:
sed -n '/^\(.\{99,154\}[^0-9]\.\).*/ {s//\1/p;q}' test.txt

With Perl:
Code:
 perl -nle '/^.{99,154}\D\./ and print $& and last' test.txt

Last edited by Aia; 08-14-2015 at 12:50 AM..
This User Gave Thanks to Aia For This Post:
lxdorney
 

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LEARN ABOUT SUSE

set_color

set_color(1)                                                           fish                                                           set_color(1)

NAME

       set_color - set_color - set the terminal color

set_color - set the terminal color
   Synopsis
       set_color [-v --version] [-h --help] [-b --background COLOR] [COLOR]

   Description
       Change the foreground and/or background color of the terminal. COLOR is one of black, red, green, brown, yellow, blue, magenta, purple,
       cyan, white and normal.

       o -b, --background Set the background color

       o -c, --print-colors Prints a list of all valid color names

       o -h, --help Display help message and exit

       o -o, --bold Set bold or extra bright mode

       o -u, --underline Set underlined mode

       o -v, --version Display version and exit

       Calling set_color normal will set the terminal color to whatever is the default color of the terminal.

       Some terminals use the --bold escape sequence to switch to a brighter color set. On such terminals, set_color white will result in a grey
       font color, while set_color --bold white will result in a white font color.

       Not all terminal emulators support all these features. This is not a bug in set_color but a missing feature in the terminal emulator.

       set_color uses the terminfo database to look up how to change terminal colors on whatever terminal is in use. Some systems have old and
       incomplete terminfo databases, and may lack color information for terminals that support it. Download and install the latest version of
       ncurses and recompile fish against it in order to fix this issue.

Version 1.23.1                                                    Sun Jan 8 2012                                                      set_color(1)
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