Hello. I'm trying to use the awk command to convert certains fields to lgo base 2, not base 10.
I'm trying command lines like:
awk '$2 $5 $7 {print log(2)($2), log(2)($5), $7) filein.txt > fileout.txt
I'm trying to make a deadline.
Thanks for helping a newbie. Here's some fresh karma... (1 Reply)
Hello All!
As a beginner user i want to add up sequential values in a text file and want to print total sum as output.The Text file will have values like the following:
class1{root}>less SUM.txt
1140.00 1155.00 1183.00 ... # it continues #
i tried to write a... (1 Reply)
Hi,
I have a text file with the following content:
monday,20
tuesday,10
wednesday,29
monday,10
friday,12
wednesday,14
monday,15
thursday,34
i want the following output:
monday,45
tuesday,10
wednesday,43
friday,12 (3 Replies)
Hi Experts,
I am new to shell scripting. Need some help in doing one task given by the customer.
The sample record in a file is as follows:
3538,,,,,,ID,ID1,,,,,,,,,,,
It needs to be the following:
3538,,353800,353800,,,ID,ID1,,,,,COLX,,,,,COLY,
And i want to modify this record in... (3 Replies)
Hi !
input:
A|B|C|D
A|F|C|E
A|B|I|C
A|T|I|B
As the title of the thread says, I would need to get:
1|3|2|4
I tried different variants of this command, but I don't manage to obtain what I need:
gawk 'BEGIN{FS=OFS="|"}{for(i=1; i<=NF; i++) a++} END {for (b in a) print b}' input
... (2 Replies)
Hi Friends,
I have an input matrix file like this
Col1 Col2 Col3 Col4
R1 1 2 3 4
R2 4 5 6 7
R3 5 6 7 8
I would like to consider only the numeric values without touching the column header and the row header.
I looked up on the forum's search, and I found this. But, I donno how to... (3 Replies)
so my output is this:
session_closed=157
session_opened=151
session_closed=18
session_opened=17
there are two patterns here, but with different values. the two patterns are "session_opened" and "session_closed". i expect there will be many more other patterns.
what i want to do is... (8 Replies)
In the attached file I am trying to use awk to extract multiple values and create the tab-delimited desired output.
In the output R_Index is a the sequential # and Pre_Enrichment is defaulted to ..
I can extract from the values to the side of the keywords, but most are above and I can not... (2 Replies)
Discussion started by: cmccabe
2 Replies
LEARN ABOUT OPENDARWIN
log10
LOG(3) BSD Library Functions Manual LOG(3)NAME
log, log2, log10, log1p, -- logarithm functions
SYNOPSIS
#include <math.h>
double
log(double x);
double
log2(double x);
double
log10(double x);
double
log1p(double x);
DESCRIPTION
The log() function computes the value of the natural logarithm of argument x.
The log2() function computes the value of the logarithm of argument x to base 2.
The log10() function computes the value of the logarithm of argument x to base 10.
The log1p() function computes the value of log(1+x) accurately even for very small values of x.
SPECIAL VALUES
log(+-0) , log2(+-0) , and log10(+-0) return -infinity and raise the "divide-by-zero" floating-point exception.
log(1) , log2(1) , and log10(1) return +0.
log(x) , log2(x) , and log10(x) return a NaN and raise the "invalid" floating-point exception for x < 0.
log(+infinity) , log2(+infinity) , and log10(+infinity) return +infinity.
log1p(+-0) returns +-0.
log1p(-1) returns -infinity and raises the "divide-by-zero" floating-point exception.
log1p(x) returns a NaN and raises the "invalid" floating-point exception for x < -1.
log1p(+infinity) returns +infinity.
SEE ALSO math(3), exp(3), exp2(3), expm1(3), pow(3), infnan(3)STANDARDS
The log() , log2() , log10() , and log1p() functions conform to ISO/IEC 9899:1999(E).
4th Berkeley Distribution July 2, 2003 4th Berkeley Distribution