How can I extract few lines(like 10 to 15, top 10 and last 10) from a file using perl.
I do it with sed, head and tail in unix scripting. I am new to perl. Appreciate your help. (2 Replies)
Hi,
I have a file and I want to sum all the numbers in it.
Example of the file:
0.6714359
-3842.59553830551
I used your forum (https://www.unix.com/shell-programming-scripting/74293-how-get-sum-all-lines-file.html) and found a script, what worked for me:
awk '{a+=$0}END{print a}'... (8 Replies)
Hi Experts,
The question may look very silly by seeing the title, but please have a look at it clearly.
I have a text file where the first 5 columns in each row were supposed to be attributes of a sample(like sample name, number, status etc) and the next 25 columns are parameters on which... (3 Replies)
Hi,
I have a file with format
a b c d e
1 1 2 2 2
1 2 2 2 3
1 1 1 1 2
1 1 1 1 4
1 1 1 1 6
in column e i want to find all similar fields ( with perl script )and sum it how many are there
for instance in format above.
2 - 2 times
4 - 1 time
6 - 1 time
what i use is
... (14 Replies)
I am trying to print 1st, 2nd, 13th and 14th fields of a file of line numbers from 29 to 10029. I dont know how to put this in one code. Currently I am removing the selected lines by
awk 'NR==29,NR==10029' File1 > File2
and then doing
awk '{print $1, $2, $13, $14}' File2 > File3
Can... (3 Replies)
Hello,
I have attached one file named file.txt .
I have to create a file using the awk script with the records in which 38th position is P and not V .
ex
it should have
00501 HOLTSVILLE NYP00501
and it should not include
00501 I R S SERVICE CENTER ... (3 Replies)
Hi guys!
I'm new to scripting and I need to write a script in awk.
Here is example of file on which I'm working
ATOM 4688 HG1 PRO A 322 18.080 59.680 137.020 1.00 0.00
ATOM 4689 HG2 PRO A 322 18.850 61.220 137.010 1.00 0.00
ATOM 4690 CD ... (18 Replies)
Hi friends,
This is sed & awk type question.
I have a text file which has numbers spread all over the file. I want to sum the series of numbers whenever i find it and produce an output file with the sum. For example
###start of input text file ####
abc
def
ghi
1
2
3
4
kjld
random... (3 Replies)
Hello,
I am new to Linux environment , I working on Linux script which should send auto email based on the specific condition from log file. Below is the sample log file
Name m/c usage
abc xxx 10
abc xxx 20
abc xxx 5
xyz ... (6 Replies)
I want to count the number of lines, I need this result be a number, and sum the last numeric column, I had done to make this one at time, but I need to make this for a crontab, so, it has to be an script, here is my lines:
It counts the number of lines:
egrep -i String file_name_201611* |... (5 Replies)
Discussion started by: Elly
5 Replies
LEARN ABOUT DEBIAN
pgmtexture
pgmtexture(1) General Commands Manual pgmtexture(1)NAME
pgmtexture - calculate textural features on a portable graymap
SYNOPSIS
pgmtexture [-d d] [pgmfile]
DESCRIPTION
Reads a portable graymap as input. Calculates textural features based on spatial dependence matrices at 0, 45, 90, and 135 degrees for a
distance d (default = 1). Textural features include:
(1) Angular Second Moment,
(2) Contrast,
(3) Correlation,
(4) Variance,
(5) Inverse Difference Moment,
(6) Sum Average,
(7) Sum Variance,
(8) Sum Entropy,
(9) Entropy,
(10) Difference Variance,
(11) Difference Entropy,
(12, 13) Information Measures of Correlation, and
(14) Maximal Correlation Coefficient.
Algorithm taken from:
Haralick, R.M., K. Shanmugam, and I. Dinstein. 1973. Textural features for image classification. IEEE Transactions on Systems, Man, and
Cybertinetics, SMC-3(6):610-621.
BUGS
The program can run incredibly slow for large images (larger than 64 x 64) and command line options are limited. The method for finding
(14) the maximal correlation coefficient, which requires finding the second largest eigenvalue of a matrix Q, does not always converge.
REFERENCES
IEEE Transactions on Systems, Man, and Cybertinetics, SMC-3(6):610-621.
SEE ALSO pgm(5), pnmcut(1)AUTHOR
Copyright (C) 1991 by Texas Agricultural Experiment Station, employer for hire of James Darrell McCauley.
22 Aug 1991 pgmtexture(1)