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Full Discussion: Summing over specific lines and replacing the lines with the sum
Top Forums Shell Programming and Scripting Summing over specific lines and replacing the lines with the sum Post 302666627 by kaaliakahn on Thursday 5th of July 2012 12:48:08 AM
Old 07-05-2012
Summing over specific lines and replacing the lines with the sum
Hi friends,

This is sed & awk type question. It is slightly different from my previous question.

I have a text file which has numbers spread all over the file. I want to sum the series of numbers (but no more than 10 numbers in series) whenever i find it and produce an output file with the sum. For example

###start of input text file ####
Code:
abc
def
ghi
1
2
3
4
5
6
7
8
9
10
11
12
13
kjld
random
text
occupies
some
1000
3000
400
again
some
random
text
900
100
whatever
is here
900
11
what

#####end of input file #########

The output should be

##start of output file ####
Code:
abc
def
ghi
55
36
kjld
random
text
occupies
some
4400
again
some
random
text
1000
whatever
is here
911
what

########### end of output file #################

So the output file is the same as the input file, except the series of numbers (where series consists of ten or less consecutive numbers) is replace by its sum.

I hope it makes sense. If not, please let me know any questions.

Kind Regards,
 

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LEARN ABOUT SUNOS

sum

sum(1B) 					     SunOS/BSD Compatibility Package Commands						   sum(1B)

NAME

       sum - calculate a checksum for a file

SYNOPSIS

       /usr/ucb/sum file...

DESCRIPTION

       sum  calculates	and  displays a 16-bit checksum for the named file and displays the size of the file in kilobytes. It is typically used to
       look for bad spots, or to validate a file communicated over some transmission line. The checksum is calculated by an  algorithm	which  may
       yield different results on machines with 16-bit ints and machines with 32-bit ints, so it cannot always be used to validate that a file has
       been transferred between machines with different-sized ints.

USAGE

       See largefile(5) for the description of the behavior of sum when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       sum(1), wc(1), attributes(5), largefile(5)

DIAGNOSTICS

       Read error is indistinguishable from EOF on most devices; check the block count.

NOTES

       sum and /usr/bin/sum (see sum(1)) return different checksums.

       This utility is obsolete.

SunOS 5.10							    8 Nov 1995								   sum(1B)
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