Search pattern then find and replace

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed - Search and replace within pattern

Hi Guys! Unix newbie here! Have a requirement for which I have been scouting the forums for a solution but has been out of luck so far :( I have a file which contains the following:- TEST1|TEST2|"TEST3|1@!2"|TEST5 My sed command should result in either one the following output:-...

2. UNIX for Dummies Questions & Answers

find Search - Find files not matching a pattern

Hello all, this is my first and probably not my last question around here. I do hope you can help or at least point me in the right direction. My question is as follows, I need to find files and possible folders which are not owner = AAA group = BBB with a said location and all sub folders ...

3. Shell Programming and Scripting

Search for a pattern and replace. Help needed

I have three variables $a, $b and $c $a = file_abc_123.txt $b = 123 $c = 100 I want to search if $b is present in $a. If it is present, then i want to replace that portion by $c. Here $b = 123 is present in "file_abc_123.txt", so i need the output as "file_abc_100.txt' How can this be...

4. Shell Programming and Scripting

Search and replace - pattern-based

Hey folks! I am new to shell-scripting, but I have a problem that I would like to solve using a script. I create very large html forms, used for randomized trials. In these forms, each question is supplied with a variable that looks something like this: PROJECT_formNN Where NN is the question...

5. UNIX for Dummies Questions & Answers

pattern containg ' search and replace

Hi guys I'm new to this forum so please help me in this I have a file where i need to replace a pattern value=' ' with the pattern value='abc' and moreover that abc value must be passed from some variable say i assign name=abc and use name as the value to replace instead of the direct string...

6. Shell Programming and Scripting

perl:: search for tow pattern and replace the third pattern

Hi i want to search two pattern on same line and replace onther pattern.. INPut file aaaa bbbbb nnnnnn ttttt cccc bbbbb nnnnnn ppppp dddd ccccc nnnnnn ttttt ffff bbbbb oooooo ttttt now i want replace this matrix like.. i want search for "bbbbb","nnnnnn" and search and replace for...

7. Shell Programming and Scripting

search a pattern and replace the whole line

Hi All, I have a requirement where I have to find a pattern in a file and comment the whole line containing the search pattern. Any ideas in shell is welcome. Thanks in advance, Regards, Arun

8. Shell Programming and Scripting

search replace pattern containing slashes

Need help in finding pattern then replacing pattern that contains multiple slashes .. ex . <imgp src="Attention_web.eps.jpg" align="left"> <imgp src="NewToday062308.eps.jpg"> replace with <imgp src="/ww2/adpay/liner/Attention_web.eps.jpg" align="left"> <imgp...

9. Shell Programming and Scripting

SED Search Pattern and Replace with the Pattern

Hello All, I have a string "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031", and I just want to extract LLSV1, but I dont get the expected result when using the sed command below. # echo "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031" | awk '{print...

10. Shell Programming and Scripting

Search for a Pattern and Replace

Hello All, Can you help me with this , I need to search a pattern replace it with the new pattern in all the files in a directory. what would be the easiest way to do that? Thanks in advance. :) Sam,

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)

Shell Programming and Scripting