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Full Discussion: reversing order of lines in a file
Top Forums Shell Programming and Scripting reversing order of lines in a file Post 302339299 by Max Well on Thursday 30th of July 2009 08:01:25 AM
Old 07-30-2009
MySQL
Thanks!

Now I want still to reverse the line order in the third and the fourth column but also I want to regenerate lines of the first column (which includes time values of time).

From the original file (which is still same):
Code:
     0.00000000E+000    -1.17555359E-001     0.00000000E+000
     2.00000000E-002    -1.17555359E-001     0.00000000E+000
     4.00000000E-002    -1.17639683E-001     0.00000000E+000
     6.00000000E-002    -1.17655106E-001     0.00000000E+000
     8.00000000E-002    -1.17603991E-001     0.00000000E+000
     1.00000000E-001    -1.17488978E-001     0.00000000E+000

to like this:
Code:
     1.20000000E-001    -1.17603991E-001     0.00000000E+000
     1.40000000E-001    -1.17655106E-001     0.00000000E+000
     1.60000000E-001    -1.17639683E-001     0.00000000E+000
     1.80000000E-001    -1.17555359E-001     0.00000000E+000
     2.00000000E-001    -1.17555359E-001     0.00000000E+000

Finally I 'm going to merge these files.
Code:
     0.00000000E+000    -1.17555359E-001     0.00000000E+000
     2.00000000E-002    -1.17555359E-001     0.00000000E+000
     4.00000000E-002    -1.17639683E-001     0.00000000E+000
     6.00000000E-002    -1.17655106E-001     0.00000000E+000
     8.00000000E-002    -1.17603991E-001     0.00000000E+000
     1.00000000E-001    -1.17488978E-001     0.00000000E+000
     1.20000000E-001    -1.17603991E-001     0.00000000E+000
     1.40000000E-001    -1.17655106E-001     0.00000000E+000
     1.60000000E-001    -1.17639683E-001     0.00000000E+000
     1.80000000E-001    -1.17555359E-001     0.00000000E+000
     2.00000000E-001    -1.17555359E-001     0.00000000E+000

Maybe realistic method to do this process at the same time:

-Regenerate lines of the first column by iteration method
Do i=0.00000000E-001...2.00000000E-001
i=i+2.00000000E-002
end

-The second and third column:
At first print original lines.
At second print backwards from second last line to first line

How to do this in practise?
Last edited by Max Well; 07-30-2009 at 09:19 AM..
 

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LEARN ABOUT PHP

cam

cam(1)							      General Commands Manual							    cam(1)

NAME

       cam - CPU'S AUDIO MIXER for Linux

SYNOPSIS

       cam    [-v  x,y]  [--volume  x,y]  [-b  x,y]  [--bass  x,y]  [-t  x,y]  [--treble x,y] [-s x,y] [--synth x,y] [-p x,y] [--pcm x,y] [-S x,y]
	      [--speaker x,y] [-l x,y] [--line x,y] [-m x,y] [--mic x,y] [-c x,y] [--cd x,y] [-M x,y] [--mixer x,y] [-a x,y]  [--altpcm  x,y]  [-r
	      x,y] [--reclev x,y] [-i x,y] [--igain x,y] [-o x,y] [--ogain x,y] [-l1 x,y] [--line1 x,y] [-l2 x,y] [--line2 x,y] [-l3 x,y] [--line3
	      x,y] [-3d 1|0] [--3dse 1|0] [-agc 1|0] [--agc 1|0] [-h] [-?] [--help] [-get] [-save] [-getfile filename] [-savefile filename]

       xcam

DESCRIPTION

       This is an audio mixer for Linux. You have the choice to use it with an interface or at the command line.

OPTIONS

       When using the interface you can use the following keys :

       LEFT ARROW
	      decrease the volume of the current device.

       RIGHT ARROW
	      increase the volume of the current device.

       UP ARROW
	      go to previous device.

       DOWN ARROW
	      go to next device.

       L      locks or unlocks :
	      unlocked : you can control the left and right channel
	      separately.
	      lock : left and right channel are controlled together.

       R      turn on/off recording mode :
	      red lamp : recording turned on
	      green lamp : recording turned off

       3      turn on/off 3D Stereo Enhancement (3DSE) device :
	      when turned on green indicator 3D will be lit at the left side of main volume handle.

       A      turn on/off microphone Automatic Gain Control :
	      when turned on green indicator AGC will be lit at the left side of microphone volume handle.

       S      save the settings of ALL devices in a file ($HOME/.camrc)

       G      loads the saved settings and restores them.

       H      shows the help screen.

       Q/ESC  exits the program and returns to shell.

       NOTE: you can use upper or lower case.

       When using the command line options the interface is not shown.

       The following options are available :

       -v, --volume x,y
		 Set 'volume' to x (left) and y (right)

       -b, --bass x,y
		 Set 'bass' to x (left) and y (right)

       -t, --trebble x,y
		 Set 'treble' to x (left) and y (right)

       -s, --synth x,y
		 Set 'synth' to x (left) and y (right)

       -p, --pcm x,y
		 Set 'pcm' to x (left) and y (right)

       -S, --speaker x,y
		 Set 'speaker' to x (left) and y (right)

       -l, --line x,y
		 Set 'line in' to x (left) and y (right)

       -m, --mic x,y
		 Set 'microphone' to x (left) and y (right)

       -c, --cd x,y
		 Set 'CD in' to x (left) and y (right)

       -I, --imix x,y
		 Set 'mixer' to x (left) and y (right)

       -a, --altpcm x,y
		 Set 'altpcm' to x (left) and y (right)

       -r, --reclev x,y
		 Set 'record level' to x (left) and y (right)

       -i, --igain x,y
		 Set 'input gain' to x (left) and y (right)

       -o, --ogain x,y
		 Set 'output gain' to x (left) and y (right)

       -l1, --line1 x,y
		 Set 'line 1' to x (left) and y (right)

       -l2, --line2 x,y
		 Set 'line 2' to x (left) and y (right)

       -l3, --line3 x,y
		 Set 'line 3' to x (left) and y (right)

       -3d, --3dse 1|0
		 Set 3D Stereo Enhancement to 1 (on) or 0 (off)

       -agc, --agc 1|0
		 Set Automatic Gain Control for microphone to 1 (on) or 0 (off)

       -get	 restore the saved values from $HOME/.camrc

       -save	 save the values to $HOME/.camrc

       -getfile filename
		 restore the saved values from file 'filename'

       -savefile filename
		 save the values to file 'filename'

       -h, -?, --help
		  displays help

       NOTE: x and y are in range from 1 to 100. Higher or lower numbers are
       ignored.

BUGS

       None known as yet.  If you find one, please let me know.

AUTHOR

       Jan 'TWP' VANDENBERGHE  <jvdbergh@uia.ua.ac.be>

																	    cam(1)
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