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Full Discussion: concatenate files sorted by date
Top Forums Shell Programming and Scripting concatenate files sorted by date Post 302203247 by docaia on Saturday 7th of June 2008 10:32:25 AM
Old 06-07-2008
concatenate files sorted by date
I am a beginner in script writing, i tried to do the following
I have a set of files sorted by date in the format YYMMDD.s and .x and .r
I need to concatenate a header file to these sets of files so I used the following code
Code:
echo "enter Swath number"
read s
echo "please enter first date and MMDD press ENTER"
read i
echo "please enter last date and MMDD  press ENTER"
read j
for((i; i <= j; i++))
do
cat NJSC_Alam_Ph1_Blk1_3D_HDR_S /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}.s  > /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}_Final.s

cat NJSC_Alam_Ph1_Blk1_3D_HDR_R /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}.r  > /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}_Final.r

cat NJSC_Alam_Ph1_Blk1_3D_HDR_X /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}.x  > /ud/SPECSDATA/Final_SPS/Alam3D/Swath_${s}/08${i}_Final.x

done

I expect it to concatenate the files based on the user input.
I have 2 problems, the first on is that it doesn't do this for example if I enter the value for i and j to be 0530 and 0531 for 30 and 31 of May it searches for a file named 08345 instead of 080530.
the other problem is how can i make the script to work for 2 different months? like I have the first file as 300508 and last file as 050608, the loop is not going o work there
 

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LEARN ABOUT DEBIAN

tv_sort

TV_SORT(1p)						User Contributed Perl Documentation					       TV_SORT(1p)

NAME

       tv_sort - Sort XMLTV listings files by date, and add stop times.

SYNOPSIS

       tv_sort [--help] [--by-channel] [--output FILE] [FILE...]

DESCRIPTION

       Read XMLTV data and write out the same data sorted in date order.  Where stop times of programmes are missing, guess them from the start
       time of the next programme on the same channel. For the last programme of a channel, no stop time can be added.

       Tv_sort also performs some sanity checks such as making sure no two programmes on the same channel overlap.

       --output FILE write to FILE rather than standard output

       --by-channel sort first by channel id, then by date within each
		       channel.

       --duplicate-error If the input contains the same programme more than once,
			    consider this as an error. Default is to silently
			    ignore duplicate entries.

       The time sorting is by start time, then by stop time.  Without --by-channel, if start times and stop times are equal then two programmes
       are sorted by internal channel id.  With --by-channel, channel id is compared first and then times.

       You can think of tv_sort as converting XMLTV data into a canonical form, useful for diffing two files.

EXAMPLES

       At a typical Unix shell or Windows command prompt:

       tv_sort <in.xml >out.xml
       tv_sort in.xml --output out.xml

       These are different ways of saying the same thing.

AUTHOR

       Ed Avis, ed@membled.com

perl v5.14.2							    2006-03-02							       TV_SORT(1p)
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