Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Efficient awk way to add numbers in line fields
Top Forums Shell Programming and Scripting Efficient awk way to add numbers in line fields Post 303005285 by Scrutinizer on Monday 16th of October 2017 02:12:36 PM
Old 10-16-2017
Quote:
Originally Posted by SkySmart
[..]
What is wrong with the modified code below:

Code:
awk -F, -v pat="$Pattern" 'BEGIN{t=0} /'Sun' 'Oct' '15' '22':[0-9][0-9]:[0-9][0-9] '2017',/
  {
[..]

The search pattern must be before the opening brace, not on the line above it (otherwise it is seen by awk as two separate condition-action sequences):

Code:
awk -F, -v pat="$Pattern" '
  BEGIN {
    t=0
  }

  /Sun Oct 15 22:[0-9][0-9]:[0-9][0-9] 2017,/ {
[..]

And you should leave out al those single quotes..



--
Note: this is also what Don Cragun mentioned in post #7
Last edited by Scrutinizer; 10-16-2017 at 11:06 PM..
This User Gave Thanks to Scrutinizer For This Post:
SkySmart
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

add line numbers

Hello.. I have got one file ... I want to add line numbers with space form starting to ending.. for example...if the file is -------------------------- sand sorcd 2345 345 recds 234 234 5687 yeres 568 988 erfg4 67 -------------------------- I need the output ... (4 Replies)
Discussion started by: esham
4 Replies

2. UNIX for Advanced & Expert Users

Add line numbers to end of each line

Hi i would like to add line numbers to end of each line in a file. I am able to do it in the front of each line using sed, but not able to add at the end of the file. Can anyone suggest The following code adds line number to start of each line sed = filename | sed 'N;s/\n/\t/' how can i... (5 Replies)
Discussion started by: rudoraj
5 Replies

3. Shell Programming and Scripting

how to add line numbers in text file

Hi all How to add line numbers in text file.. ex abcd cdef result 1. abcd 2. cdef thx in advance (4 Replies)
Discussion started by: suryanarayana
4 Replies

4. Shell Programming and Scripting

Add to constant fields at the end of every line

Hi, I want to add two fields with values '1000' and 'XYZ-1234' at the end of every line in a comma delimited file. Should I use any command in a loop to add the fields or using any single command Shall I acheive it? Kindly help me in code. Thanks, Poova. (6 Replies)
Discussion started by: poova
6 Replies

5. Shell Programming and Scripting

AWK multiple line fields sorting

I have a bash script which takes a log file with each record separated by a #. The records have multiple fields but field $1 is always the date and time. When the script is run it prints the record just fine from oldest to newest. I need to have records print out from newest first. Here is the... (7 Replies)
Discussion started by: numele
7 Replies

6. Shell Programming and Scripting

Using Awk to Add Numbers

echo "0.1 2.0 0.4 2.0 4.3 1.0 6.0 9.0" | awk 'BEGIN {total=0} {total += $1} END {print total}' I want to add the above output from the echo command, but i can't figure this out. The output above always spits out inaccurate numbers. can someone please provide me with a one liner similar to... (4 Replies)
Discussion started by: SkySmart
4 Replies

7. Shell Programming and Scripting

awk (or other) script that assigns fields from a line to multiple variables

Hey all, Unfortunately I have only basic knowledge of awk and/or scripting. If I have a file with lines that can look similar to this: Name=line1 Arg1=valueA Arg2=valueB Arg3=valueC Name=line2 Arg1=valueD Name=line3 Arg1=valueE Arg3=valueF Name=line4 Arg2=valueG ... (4 Replies)
Discussion started by: Rike255
4 Replies

8. Shell Programming and Scripting

How to add line numbers (multiples of 5: 0,5,10,15,20) to a text file?

Hi, I need to number the lines in my text file. I know how to do this with standard numbering (1,2,3,4, etc) but I need to count in multiples of 5, beginning 0,5,10,15... example existing file: abcd efg hijklm nopqrs desired output 0 abcd 5 efg 10 hijklm 15 ... (11 Replies)
Discussion started by: livbaddeley
11 Replies

9. Shell Programming and Scripting

awk - set numbers [ 1 ... n] from the 6 line

Hi, i have a file, where measurement-data is stored in the first column. The file has also a header of 5 lines. I want to set counting up numbers in front of any particular measurement-value; should start at the 6. line with starting number 1. i try to solve it with ... awk 'NR > 6 { print... (6 Replies)
Discussion started by: IMPe
6 Replies

10. Shell Programming and Scripting

awk to identify empty fields in line

I am trying to use awk to identify and print out records in fields that are empty along with which line they are in. I hope the awk below is close, it runs but nothing results. Thank you :). awk awk -F'\t' 'FNR==NR ~ /^*$/ { print "NR is empty" }' file file 123 GOOD ID 45... (3 Replies)
Discussion started by: cmccabe
3 Replies

LEARN ABOUT DEBIAN

bup-margin

bup-margin(1)						      General Commands Manual						     bup-margin(1)

NAME

       bup-margin - figure out your deduplication safety margin

SYNOPSIS

       bup margin [options...]

DESCRIPTION

       bup margin  iterates  through  all  objects  in	your  bup repository, calculating the largest number of prefix bits shared between any two
       entries.  This number, n, identifies the longest subset of SHA-1 you could use and still encounter a collision between your object ids.

       For example, one system that was tested had a collection of 11 million objects (70 GB), and bup margin returned 45.  That  means  a  46-bit
       hash  would be sufficient to avoid all collisions among that set of objects; each object in that repository could be uniquely identified by
       its first 46 bits.

       The number of bits needed seems to increase by about 1 or 2 for every doubling of the number of objects.  Since SHA-1 hashes have 160 bits,
       that  leaves 115 bits of margin.  Of course, because SHA-1 hashes are essentially random, it's theoretically possible to use many more bits
       with far fewer objects.

       If you're paranoid about the possibility of SHA-1 collisions, you can monitor your repository by running bup margin occasionally to see	if
       you're getting dangerously close to 160 bits.

OPTIONS

       --predict
	      Guess  the offset into each index file where a particular object will appear, and report the maximum deviation of the correct answer
	      from the guess.  This is potentially useful for tuning an interpolation search algorithm.

       --ignore-midx
	      don't use .midx files, use only .idx files.  This is only really useful when used with --predict.

EXAMPLE

	      $ bup margin
	      Reading indexes: 100.00% (1612581/1612581), done.
	      40
	      40 matching prefix bits
	      1.94 bits per doubling
	      120 bits (61.86 doublings) remaining
	      4.19338e+18 times larger is possible

	      Everyone on earth could have 625878182 data sets
	      like yours, all in one repository, and we would
	      expect 1 object collision.

	      $ bup margin --predict
	      PackIdxList: using 1 index.
	      Reading indexes: 100.00% (1612581/1612581), done.
	      915 of 1612581 (0.057%)

SEE ALSO

       bup-midx(1), bup-save(1)

BUP

       Part of the bup(1) suite.

AUTHORS

       Avery Pennarun <apenwarr@gmail.com>.

Bup unknown-															     bup-margin(1)
All times are GMT -4. The time now is 05:23 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy