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Shell Programming and Scripting
How to sum the value with negative values?
Post 302985869 by balajesuri on Wednesday 16th of November 2016 12:07:06 PM
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Hello,
I have a list like this :
1
2
-4
0
-3
-7
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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0
0
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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(1) User Commands sum(1) NAME
sum - print checksum and block count for a file SYNOPSIS
sum [-r] [file...] DESCRIPTION
The sum utility calculates and prints a 16-bit checksum for the named file and the number of 512-byte blocks in the file. It is typically used to look for bad spots, or to validate a file communicated over some transmission line. OPTIONS
The following options are supported: -r Use an alternate (machine-dependent) algorithm in computing the checksum. OPERANDS
The following operands are supported: file A path name of a file. If no files are named, the standard input is used. 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). ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of sum: LC_CTYPE, LC_MESSAGES, and NLSPATH. EXIT STATUS
The following exit values are returned. 0 Successful completion. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |Availability |SUNWesu | |CSI |enabled | +-----------------------------+-----------------------------+ SEE ALSO
cksum(1), sum(1B), wc(1), attributes(5), environ(5), largefile(5) DIAGNOSTICS
"Read error" is indistinguishable from end of file on most devices; check the block count. NOTES
Portable applications should use cksum(1). sum and usr/ucb/sum (see sum(1B)) return different checksums. SunOS 5.10 7 Nov 1995 sum(1)