Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: change a field in a file
Top Forums Shell Programming and Scripting change a field in a file Post 302346459 by Franklin52 on Saturday 22nd of August 2009 05:47:45 AM
Old 08-22-2009
Quote:
Originally Posted by malcomex999
when i run your code, it changes only on the second row on the second column. how about on the last one, there is 654???

Code:
>awk '{for(i=0;++i<NF;){if($i==654)$i+=2}}1' file
123 456 789
987 656 321
147 258 369
222 333 654

Code:
i<NF

should be:

Code:
i<=NF

Smilie
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to change field seperator

Hi Please help me out with this problem: I want to have a script that would change the nth field seperator in a line into something else. like a,d,4,2,97,8,9 into a,d,4,2,97/8/9 Thanks (2 Replies)
Discussion started by: onthetopo
2 Replies

2. Shell Programming and Scripting

insert EOD if value in Field 1 change

How to create simple awk program data such as below: input: 1 23 1 34 1 12 2 10 2 11 2 12 3 11 3 12 3 13 expected output: 1 23 1 34 1 12 EOD 2 10 2 11 2 12 EOD (2 Replies)
Discussion started by: jmaskar
2 Replies

3. Shell Programming and Scripting

change field content awk

I have a line like this: I want to move HTTP/1.1 200 OK to the next line and put a blank line between the two lines i.e. How can i get it using awk? Thanks in advance (2 Replies)
Discussion started by: littleboyblu
2 Replies

4. UNIX for Advanced & Expert Users

change field 2 date format

from this input WEBELSOLAR,29122009,1:1 WIPRO,15062010,2:3 ZANDUREALT,18012007,1:3 i want output as WEBELSOLAR,20091229,1:1 WIPRO,20100615,2:3 ZANDUREALT,20070118,1:3 basically input is in ddmmyyyy format and i was to convert it to yyyymmdd format (1 Reply)
Discussion started by: manishma71
1 Replies

5. Shell Programming and Scripting

Split file when the key field change !

Hello, I have the following example data file: Rv.Global_Sk,1077.160523,D,16/09/2011 Rv.Global_Sk,1077.08098,D,17/09/2011 Rv.Global_Sk,1077.001445,D,18/09/2011 Rv.Global_Sk,1072.660733,D,19/09/2011 Rv.Global_Sk,1070.381557,D,20/09/2011 Rv.Global_Sk,1071.971747,D,21/09/2011... (4 Replies)
Discussion started by: csierra
4 Replies

6. Shell Programming and Scripting

Change a field value in a loop

Hi guys, i have an executable file that contains several records and fields. One of the records has a variable filed that must be changed each time i want to execute the file. Would it be possible that i can use a loop to change the value of that field? Suppose that the field address is: Record... (5 Replies)
Discussion started by: saeed.soltani
5 Replies

7. UNIX for Dummies Questions & Answers

change field separator only from nth field until NF

Hi ! input: 111|222|333|aaa|bbb|ccc 999|888|777|nnn|kkk 444|666|555|eee|ttt|ooo|ppp With awk, I am trying to change the FS "|" to "; " only from the 4th field until the end (the number of fields vary between records). In order to get: 111|222|333|aaa; bbb; ccc 999|888|777|nnn; kkk... (1 Reply)
Discussion started by: beca123456
1 Replies

8. Shell Programming and Scripting

How to change variable length field?

Hello, I have a file with a date field with various lengths. For example: m/d/yyyy hh:mm or h:mm mm/dd/yyyy hh:mm or h:mm Is there a way using sed or awk to change the field to m/d/y ? I don't need the hours and minutes in that field, just the date in the proper format. Thanks in... (6 Replies)
Discussion started by: sonnyo916
6 Replies

9. Shell Programming and Scripting

awk to change contents of field based on condition in same file

In the awk below I am trying to copy the entire contents of $6 there may be multiple values seperated by a ;, to $8, if $8 is . (lines 1 and 3 are examples). If that condition $8 is not . (line2 is an example) then that line is skipped and printed as is. The awk does execute but prints the output... (3 Replies)
Discussion started by: cmccabe
3 Replies

10. Shell Programming and Scripting

awk to change value in field according to another

I am trying to use awk to check if each $2 in file1 falls between $2 and $3 of the matching $4 line of file2. If it does then in $5 of file2, exon if it does not intron. I think the awk below will do that, but I am struggling trying to is add a calculation that if the difference is less than 10,... (27 Replies)
Discussion started by: cmccabe
27 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 10:51 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy