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Shell Programming and Scripting
How to sum the value with negative values?
Post 302985867 by RudiC on Wednesday 16th of November 2016 12:04:37 PM
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Hello,
I have a list like this :
1
2
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0
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5
6 etc.
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a=10.02
pattern=-11.01
b=$(echo | awk '{ print $a*$pattern}')
echo $b
its not working even
ALso tried `expr $a \* $pattern`
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Hi, i need help on replacing negative values in a column with 0. any quick fix on this? thanks much. for instance,
input:
1
2.3
-0.4
-25
12
13
45
-12
desired output
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2.3
0
0
12
13
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Can anyone please assist me?
Please find the attached input and output file for ur reference.
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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 This utility is obsolete.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)