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Full Discussion: Need help with shell commands (not sure which command is appropriate)
Top Forums Shell Programming and Scripting Need help with shell commands (not sure which command is appropriate) Post 302914077 by Don Cragun on Thursday 21st of August 2014 06:20:14 PM
Old 08-21-2014
Quote:
Originally Posted by linuxUser_
Dear All,

I have 2 files namely file1 and file2.
in file1 I have something like this
Code:
Min X = -250.000000, Max X =  250.000000
Min Y = -95.000000, Max Y =  95.000000
Min Z = -95.000000, Max Z =  136.500000

I have to write this date to file2 as
Code:
xMin -250.000000;
xMax 250.000000;

yMin -95.000000;
yMax 95.000000;

zMin -95.000000;
zMax 136.500000;

xg  #calc "abs((250.000000-(-250.000000))/$level0)";
yg  #calc "abs((95.000000-(-95.000000))/$level0)";
zg  #calc "abs((136.500000-(-95.000000))/$level0)";


I hope one can easily understand what I am doing. Its all coping values and replacing previous values.

Note: files will have other entities. So echo kind of commands will not work for me.

Thanks & Regards,
linuxUser_
For the data shown in red, do you want your script to perform the arithmetic calculations shown in the comments, or do you want the comments to be part of the output with the numeric values shown replaced with data from your input file?

If your script is supposed to perform the calculations:
  1. How is your script supposed to determine the value of $level0?
  2. Is double precision floating point arithmetic sufficient for these calculations, or do you need arbitrary precision calculations rounded to six digits of precision after the decimal point?
  3. Does case matter when printing your variable names? (Your input has uppercase X, Y, and Z; your output uses lowercase x, y, and z.)
  4. Can the output lines be reordered such that xg is printed with xMin and xMax, yg is printed with yMin and yMax, and zg is printed with zMin and zMax instead of grouping all of the *g variables at the end of the output?
  5. What shell do you use? (Or more importantly, does your system have a 1993 or later version of the Korn shell? Floating point arithmetic is built-in in ksh93, but not in any other shells I use.)
This User Gave Thanks to Don Cragun For This Post:
rbatte1
 

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