How would I pass awk output to a perl variable?
For example, I want to save the value in the 4th column into the variable called test. My best guess is something as follow, but I am sure this isn't correct.
$test = system("awk '/NUMBER/{print \$4}' $_"); (8 Replies)
hi i am trying to save the values i extract from a file with the help of awk in a bash shell array.
i have:
exec 10<file2
while read LINE <&10; do
ARRAY1=$(awk '{print $1}' file2)
((count++))
done
echo ${ARRAY1}
it prints just blank lines. file1 has two columns and i... (4 Replies)
hi i am trying to save values in a file in an array in awk..the file is as follows:
0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,
so far i have this:
awk 'BEGIN {RS="\n";FS=","}
{
for(i=1;i<=NR;i++)
{
for(j=1;j<=NF;j++)
{
a=$j;
}
} (4 Replies)
Hi all,
i have a data array as follows.
array=ertfgj2345
array=456ttygkd
.
.
.
array=errdjt3235
so number or elements in the array can varies depending on how big the data input is.
now i have a variable, and it is $1 (there are $2, $3 and so on, i am only interested in $1).
... (9 Replies)
Hi gurus,
I need to create arrays from variables, via a loop.
The issue I have is with the array name creation. How do I use a variable to define an array?
I want to do something like
declare -a $H
where $H is my loop variable.
I then need to add items to each array I've created,... (3 Replies)
Hello experts,
I'm stuck with this script for three days now. Here's what i need.
I need to split a large delimited (,) file into 2 files based on the value present in the last field.
Samp: Something.csv
bca,adc,asdf,123,12C
bca,adc,asdf,123,13C
def,adc,asdf,123,12A
I need this split... (6 Replies)
Hello guys, I just start trying out AWK and encounter a problem, I try to think a bit but seems my way is incorrect.
I have two input file, with the first file has only one field, the second file has 3 fields, I suppose to do stuffs to them by writing an awk program, kinda sort them out. Since I... (15 Replies)
while i've used arrays to work with variables, i've never used them to loop through a set of strings and wanted to ask the community for some feedback or assistance.
let me be specific. here's my code:
# URL port Variables
port2195=`nc -z $url2195 2195`
port2196=`nc -z $url2196 2196`... (5 Replies)
Hello,
I have a simple task and I am having some trouble with the syntax. I have a variable with an assigned value,
CMD_STRING='-L 22 -s 0 -r -O -A i -N 100 -n'
I would like to add that variable to an array. As far as I have been able to look up, the syntax should be something like,
... (4 Replies)
So, I've been playing with speeding up some analysis we do by using multiple threads of awk (actually, mawk, but code-compatible as far as I use it) on multiple CPU cores. So, I have a big data file and I have several copies of exactly the same processor script, written in mawk. I also have a... (8 Replies)
Discussion started by: treesloth
8 Replies
LEARN ABOUT SUSE
total
TOTAL(1) General Commands Manual TOTAL(1)NAME
total - sum up columns
SYNOPSIS
total [ -m ][ -sE | -p | -u | -l ][ -i{f|d}[N] ][ -o{f|d} ][ -tC ][ -N [ -r ]] [ file .. ]
DESCRIPTION
Total sums up columns of real numbers from one or more files and prints out the result on its standard output.
By default, total computes the straigt sum of each input column, but multiplication can be specified instead with the -p option. Likewise,
the -u option means find the upper limit (maximum), and -l means find the lower limit (minimum).
Sums of powers can be computed by giving an exponent with the -s option. (Note that there is no space between the -s and the exponent.)
This exponent can be any real number, positive or negative. The absolute value of the input is always taken before the power is computed
in order to avoid complex results. Thus, -s1 will produce a sum of absolute values. The default power (zero) is interpreted as a straight
sum without taking absolute values.
The -m option can be used to compute the mean rather than the total. For sums, the arithmetic mean is computed. For products, the geomet-
ric mean is computed. (A logarithmic sum of absolute values is used to avoid overflow, and zero values are silently ignored.)
If the input data is binary, the -id or -if option may be given for 64-bit double or 32-bit float values, respectively. Either option may
be followed immediately by an optional count, which defaults to 1, indicating the number of double or float binary values to read per
record on the input file. (There can be no space between the option and this count.) Similarly, the -od and -of options specify binary
double or float output, respectively. These options do not need a count, as this will be determined by the number of input channels.
A count can be given as the number of lines to read before computing a result. Normally, total reads each file to its end before producing
its result, but this behavior may be overridden by inserting blank lines in the input. For each blank input line, total produces a result
as if the end-of-file had been reached. If two blank lines immediately follow each other, total closes the file and proceeds to the next
one (after reporting the result). The -N option (where N is a decimal integer) tells total to produce a result and reset the calculation
after every N input lines. In addition, the -r option can be specified to override reinitialization and thus give a running total every N
lines (or every blank line). If the end of file is reached, the current total is printed and the calculation is reset before the next file
(with or without the -r option).
The -tC option can be used to specify the input and output tab character. The default tab character is TAB.
If no files are given, the standard input is read.
EXAMPLE
To compute the RMS value of colon-separated columns in a file:
total -t: -m -s2 input
To produce a running product of values from a file:
total -p -1 -r input
BUGS
If the input files have varying numbers of columns, mean values will certainly be off. Total will ignore missing column entries if the tab
separator is a non-white character, but cannot tell where a missing column should have been if the tab character is white.
AUTHOR
Greg Ward
SEE ALSO cnt(1), neaten(1), rcalc(1), rlam(1), tabfunc(1)RADIANCE 2/3/95 TOTAL(1)