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Full Discussion: Arithmetic operation between columns using loop variable
Top Forums Shell Programming and Scripting Arithmetic operation between columns using loop variable Post 302485418 by michaelrozar17 on Wednesday 5th of January 2011 07:32:12 AM
Old 01-05-2011
Quote:
Originally Posted by Surabhi_so_mh
I am doing like this:
Code:
for ((i=1; i<=3; i++))
do
  a=`echo "2*$i+2.561" | bc -l`   
  awk '{ printf"%.8f %.8f %.8f\n", ($1/a), $2, $3 }' infile >> out$i
done

but it seems variable a has to be defined within awk. how can I use i in it? Please help
To declare a variable within awk use -v option..so the above awk could be as
Code:
awk -v var="$a" '{ printf"%.8f %.8f %.8f\n", $1/var, $2, $3 }' infile >> out$i

 

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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
       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

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       o -u, --underline Set underlined mode

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

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