awk, help me - counting items and listing them Post: 302555620

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk between items including items

OS=HP-UX ksh The following works, except I want to include the <start> and <end> in the output. awk -F '<start>' 'BEGIN{RS="<end>"; OFS="\n"; ORS=""} {print $2} somefile.log' The following work in bash but not in ksh sed -n '/^<start>/,/^<end>/{/LABEL$/!p}' somefile.log

2. Shell Programming and Scripting

Counting with Awk

I need "awk solution" for simple counting! File looks like: STUDENT GRADE student1 A student2 A student3 B student4 A student5 B Desired Output: GRADE No.of Students A 3 B 2 Thanks for awking!

3. Shell Programming and Scripting

Counting items in variables, How come this works, However

Hi All, To start with, I have been reading this site for years, Unfortunately I do not consider myself versed well enough with scripts to provide useful help to others. The Blind cannot lead the Blind! Many of you have provided me with brain food and solutions over the years without even...

4. Shell Programming and Scripting

Counting the number of readable, writable, and executable items in a directory

Hello, I'm writing a script in sh in which the first command line argument is a directory. from that, i'm suppose to count the number of readable, writable, and executable items in the directory. I know using $1 represents the directory, and ls would display all the items in the directory, and that...

5. Shell Programming and Scripting

counting using awk

Hi, I want to perform a task using shell script. I am new to awk programming and any help would be greatly appreciated. I have the following 3 files (for example) file1: Name count Symbol chr1_1_50 10 XXXX chr3_101_150 30 YYYY File2: Name ...

6. Shell Programming and Scripting

Counting Fields with awk

ok, so a user can specify options as is shown below: ExA: cpu.pl!23!25!-allow or ExB: cpu.pl!23!25!-block!all options are delimited by the exclamation mark. now, in example A, there are 4 options provided by the user. in example B, there are 5 options provided by the user. ...

7. Shell Programming and Scripting

awk counting question

Probably a simple to this, but unsure how to do it. I would prefer an AWK solution. Below is the data set. 1 2 3 2 5 7 4 6 9 1 5 4 8 5 7 1 1 10 15 3 12 3 7 9 9 8 10 4 5 2 9 1 10 4 7 9 7 12 6 9 13 8 For the second...

8. UNIX for Dummies Questions & Answers

awk colon separated items

Hi, I need to filter my data based on items in column 23. Column 1 until column 23 are tab separated. This is how column 23 looks like: PRIMARY=<0/1:504:499,5:.:.:.:0.01:1:15:.> I want to extract lines if items 7 (separated by : ) in column 23 are more than 0.25 . In example above , item...

9. Shell Programming and Scripting

awk - function to return permutations of n items out of m

Hi, I'm trying to write an awk function that returns all possible permutations of n items chosen in a list of m items. For example, given the input "a,b,c,d,e" and 3, the function should return the following : a a a a a b a a c a b a a b b ... c a a c a b ... e e c e e d e e e (125...

10. Shell Programming and Scripting

Pass an array to awk to sequentially look for a list of items in a file

Hello, I need to collect some statistical results from a series of files that are being generated by other software. The files are tab delimited. There are 4 different sets of statistics in each file where there is a line indicating what the statistic set is, followed by 5 lines of values. It...

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)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk between items including items

Discussion started by: Ikon

2. Shell Programming and Scripting

Counting with Awk

Discussion started by: saint2006

3. Shell Programming and Scripting

Counting items in variables, How come this works, However

Discussion started by: Festus Hagen

4. Shell Programming and Scripting

Counting the number of readable, writable, and executable items in a directory

Discussion started by: kratos22