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Full Discussion: Very Urgent Query... PLease help me
Top Forums Shell Programming and Scripting Very Urgent Query... PLease help me Post 302489871 by jojo123 on Saturday 22nd of January 2011 06:22:44 AM
Old 01-22-2011
Very Urgent Query... PLease help me
Dear All,

I need an output file in a way as described below

Quote:
0:00|
0:30|
1:00|
1:30|
2:00|
2:30|
3:00|
3:30|
4:00|
4:30|
5:00|
5:30|
6:00|
6:30|
7:00|
7:30|
8:00|
8:30|
9:00|
9:30|
10:00|
10:30|
11:00|
11:51|
12:00|
12:30|
12:45|
13:30|
14:06|
14:07|
15:00|
15:30|
16:00|
16:30|
17:00|
17:30|
18:00|
18:30|
19:00|
19:30|
20:00|
20:30|
21:00|
21:30|
22:00|
22:30|
23:00|
23:30|
24:00|
the above data should be static i.e. will remain the same

and the second feild will print a value comming from another script as per time (please note script will be scheduled for 30 min interval in crontab, so it will run at specified time) and should print data corresponding to time and make a file, now the problem is when the script reruns after 30 min it writes a value but remove the histroy data wheras i want the history data also as mentioned below

Quote:
0:00|
0:30|
1:00|
1:30|
2:00|
2:30|
3:00|
3:30|
4:00|
4:30|
5:00|
5:30|
6:00|
6:30|
7:00|
7:30|
8:00|
8:30|
9:00|
9:30|
10:00|
10:30|
11:00|
11:51|
12:00|
12:30|
12:45|
13:30|
Quote:
14:06|99|
14:07|97|
and so on till end
15:00|
15:30|
16:00|
16:30|
17:00|
17:30|
18:00|
18:30|
19:00|
19:30|
20:00|
20:30|
21:00|
21:30|
22:00|
22:30|
23:00|
23:30|
24:00|
 

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LEARN ABOUT MINIX

ppmtopgm

ppmtopgm(1)                                                   General Commands Manual                                                  ppmtopgm(1)

NAME

       ppmtopgm - convert a portable pixmap into a portable graymap

SYNOPSIS

       ppmtopgm [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as  input.  Produces a portable graymap as output.  The output is a "black and white" rendering of the original
       image, as in a black and white photograph.  The quantization formula used is .299 r + .587 g + .114 b.

       Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any  ppm  program  can
       read  pgm  (and  pbm  ) files automatically.  pgmtoppm is for colorizing a pgm file.  Also, see ppmtorgb3 for a different way of converting
       color to gray.  And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate  the  original
       colors, not necessarily a way that looks like a black and white photograph.

QUOTE

       Cold-hearted orb that rules the night
       Removes the colors from our sight
       Red is gray, and yellow white
       But we decide which is right
       And which is a quantization error.

SEE ALSO

       pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)

AUTHOR

       Copyright (C) 1989 by Jef Poskanzer.

                                                                   10 April 2000                                                       ppmtopgm(1)
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