Gen random char then sed replacements Post: 302572554

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

sed escape char

Hi, For the following complex code , <!-- ...

2. Shell Programming and Scripting

sed - delete until char x

Hi, I got a Textfile contains hundreds of lines like this: 3 02 8293820 0 22 22 All I need is this: 293820 0 22 22 So i decided to delete until the first '8' comes up. But how I can realize that?

3. UNIX for Dummies Questions & Answers

Sed to replace second number in a random string

I need a sed line that will take STDM111 and change it to STDM161 the STDM will always be constant but the 3 numbers after will be random, I just need it to always replace the middle number with 6 regardless of what the numbers are.

4. Shell Programming and Scripting

Sed and random

Hi everyone, this is my first post. Some time ago I did a script to convert .csv files to oracle inserts. Now I need to add something and I can't make it work. This is the code: #!/bin/bash #Rev. 2 paso_uno() { local tmp=`mktemp temp.uno` cat $1 > $2 cat $2 > $tmp mv $tmp $2 }...

5. Shell Programming and Scripting

Removing special char's with sed

Hi, I've a txt file which contains the following kind of listed data 18971 ./aosrp18.r 15340 ./aosrp12.r 22996 ./aosrp08.r 17125 ./aosrp06.r I'm trying to get rid of the ./ in the file and have tried the following with sed but I'm not getting the correct result... I'm not sure what way...

6. Shell Programming and Scripting

Using SED to replace a random number?

Hi all, I need to run a number of scripts which have a certain phrase on them so I have identified these by; grep -l 100 *script | sort -u Normally I could just run something along the lines of; for i in `grep -l 100 *script | sort -u`; do ./${i}; done However before I run each of...

7. UNIX for Dummies Questions & Answers

How to use sed to do multiple replacements all at once?

I have a text file where I want to use sed to do multiple replacements all at once (i.e. with a single command) . I want to convert all AA's to 0, all AG's to 1 and all GG's to 2. How do I go about doing that? Thanks!

8. Shell Programming and Scripting

How to get count of replacements done by sed?

Hi , How can i get count of replacements done by sed in a file. I know grep -c is a method. But say if sed had made 10 replacement in a file, can i get number 10 some how?

9. UNIX for Dummies Questions & Answers

Selective Replacements: Using sed or awk to replace letters with numbers in a very specific way

Hello all. I am a beginner UNIX user who is using UNIX to work on a bioinformatics project for my university. I have a bit of a complicated issue in trying to use sed (or awk) to "find and replace" bases (letters) in a genetics data spreadsheet (converted to a text file, can be either...

10. Shell Programming and Scripting

sed returns error "sed: -e expression #1, char 18: unterminated `s' command"

Hello All, I have something like below LDC100/rel/prod/libinactrl.a LAA2000/rel/prod/libinactrl.a I want to remove till first forward slash that is outputshould be as below rel/prod/libinactrl.a rel/prod/libinactrl.a How can I do that ???

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

sed escape char

Discussion started by: fed.linuxgossip

2. Shell Programming and Scripting

sed - delete until char x

Discussion started by: mcW

3. UNIX for Dummies Questions & Answers

Sed to replace second number in a random string

Discussion started by: glev2005

4. Shell Programming and Scripting

Sed and random

Discussion started by: Tr0cken