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Full Discussion: sed Command to replace particular value.
Top Forums Shell Programming and Scripting sed Command to replace particular value. Post 302996392 by Don Cragun on Tuesday 25th of April 2017 01:41:52 PM
Old 04-25-2017
Quote:
Originally Posted by Preeti Chandra
Hi ,

My input file contain :
Code:
list = 3 14 15 10 9 11 12 18 19 20 21 22 23 24 25 26 6 1 2 3 4 5 7 8 16 17 27 28 30 29

Expected output :
Code:
list = 0 0 0 0 0 0 0 18 0 20 0 0 0 0 0 0 6 0 0 3 4 0 0 0 0 0 0 0 0 0

I want to keep the 8,10,16,17,22 value from the list and put 0 on rest of the positions.

command using :
Code:
set list=`3 14 15 10 9 11 12 18 19 20 21 22 23 24 25 26 6 1 2 3 4 5 7 8 16 17 27 28 30 29'
set new_list='0 0 0 0 0 0 0 18 0 20 0 0 0 0 0 0 6 0 0 3 4 0 0 0 0 0 0 0 0 0'
sed -i 's/'$list'/'$exp_list'/g'

but it is not working...

Thanks in advance....
Note that you can't use a backquote in your assignment to list; the opening quote type much either be a double-quote or a single-quote and must be the same type of quote as the ending quote.

And, you have to use the correct quoting in your sed command so the substitute command passed to it will be a single quoted string. And, you have to tell sed what file you want it to edit:
Code:
set list='3 14 15 10 9 11 12 18 19 20 21 22 23 24 25 26 6 1 2 3 4 5 7 8 16 17 27 28 30 29'
set new_list='0 0 0 0 0 0 0 18 0 20 0 0 0 0 0 0 6 0 0 3 4 0 0 0 0 0 0 0 0 0'
sed -i "s/$list/$exp_list/" pathname

Where pathname is the pathname of the file you want to edit.

But, note that this preserves the values of fields 8, 10, 17, 20, and 21; not 8, 10, 16, 17, and 22???
 

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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
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