Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Print array into a single file - AWK
Top Forums Shell Programming and Scripting Print array into a single file - AWK Post 302724297 by Corona688 on Wednesday 31st of October 2012 01:07:05 PM
Old 10-31-2012
NR and FNR are special variables in awk. NR means the total number of records processed, FNR is the number of records read from the current file. When they are identical, that means you are in the very first file and nowhere else.

I use that to load the list of stuff to translate into awk, stuffing it into an array like T["AAA"]="-10" Then the 'next' tells it to skip to the next line, preventing it from running any of the code below.

For all the other files, it checks if the array T has anything with an index identical to column 8. $8 in T ...and if it does, it just overwrites column 8 with the contents of the array. $8=T[$8]

Then it prints the entire line to the file FILENAME ".aaa". FILENAME is a special variable which names the current file. Putting two strings together like this concatenates them. So if the current file is file1, it will write to "file1.aaa".
This User Gave Thanks to Corona688 For This Post:
PaulaL
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

awk to print ' (single quotes)

I'm building a file with sql delete statements. I need to print the single quotes for the where clause. i.e. delete from Command where CommandName = 'SomeName'; I have the following in my script input=$(pwd)/Cmnd.csv i=0 while read line do if test $i -ge 1; then ... (2 Replies)
Discussion started by: orahi001
2 Replies

2. Shell Programming and Scripting

Accessing single elements of a awk array in END

How do I access one of the indices in array tst with the code below? tst=sprintf("%5.2f",Car / 12) When I scan thru the array with for ( i in tst ) { print i,tst } I get the output of: vec-7 144 But when I try this in the END print tst It looks like it's not set. What am... (6 Replies)
Discussion started by: timj123
6 Replies

3. UNIX for Dummies Questions & Answers

how to print single quote in awk

Hi all, It is a very stupid problem but I am not able to find a solution to it. I am using awk to get a column from a file and I want to get the output field in between single quotes. For example, Input.txt 123 abc 321 ddff 433 dfg ........ I want output file to be as ... (6 Replies)
Discussion started by: gauravgoel
6 Replies

4. Shell Programming and Scripting

want to print single quote using awk

i want to print ' symbol using awk i tried: awk '{print " ' "}' awk '{print "\' "}' both not work please help me. (2 Replies)
Discussion started by: RahulJoshi
2 Replies

5. Shell Programming and Scripting

Awk problem: How to express the single quote(') by using awk print function

Actually I got a list of file end with *.txt I want to use the same command apply to all the *.txt Thus I try to find out the fastest way to write those same command in a script and then want to let them run automatics. For example: I got the file below: file1.txt file2.txt file3.txt... (4 Replies)
Discussion started by: patrick87
4 Replies

6. Shell Programming and Scripting

URGENT! single apex in awk print

cat a | awk -F";" '{print "update db set column=' "$2" ' where column1=\""$1"\";"}' > ip-add.sql Hi! I'm a new user! i've an urgent help on the single apex use in the double apex print string The apex between che "$2" should not be interpreted, but....how?! I'm trying to use \ but don't work... (1 Reply)
Discussion started by: Re DeL SiLeNziO
1 Replies

7. Shell Programming and Scripting

BASH: print matrix from single array

I am creating a report in groff and need to format data from a file into a table cell. Sample data: dador,173323,bpt,jsp,39030013338878,1 dador,173323,brew,jsp,39030013338860,1 dador,173323,brew,jsp,39030013339447,1 dador,173323,brew,jsp,39030013339538,1 I would like to build a table... (12 Replies)
Discussion started by: Bubnoff
12 Replies

8. Shell Programming and Scripting

How do you print a single quote character in AWK

How do you print out a single quote character in AWK? Using the escape character does not seem to work. {printf "%1$s %2$s%3$s%2$s\n" , "INCLUDE", " \' ", "THIS" } does not work. Any suggestions? (6 Replies)
Discussion started by: cold_Que
6 Replies

9. Shell Programming and Scripting

Perl question - How do I print contents of an array on a single line?

I have the following code: print @testarray; which returns: 8 8 8 9 How do I return the array like this: The output is: 8, 8, 8, 9 (5 Replies)
Discussion started by: streetfighter2
5 Replies

10. Shell Programming and Scripting

Not getting array in .awk file and print it

I have test.sh file as below : set -A IDARR $ID echo | awk -f test.awk -v TempArr="${IDARR }" I have test.awk file as below : BEGIN { Flag = 1; } { print "Hello"; for(i in TempArr) { print i; } } (9 Replies)
Discussion started by: nes
9 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 11:02 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy