sed Command Post: 302795471

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk/sed Command : Parse parameter file / send the lines to the ksh export command

Sorry for the duplicate thread this one is similar to the one in https://www.unix.com/shell-programming-scripting/88132-awk-sed-script-read-values-parameter-files.html#post302255121 Since there were no responses on the parent thread since it got resolved partially i thought to open the new...

2. Shell Programming and Scripting

Loop with sed command to replace line with sed command in it

Okay, title is kind of confusion, but basically, I have a lot of scripts on a server that I need to replace a ps command, however, the new ps command I'm trying to replace the current one with pipes to sed at one point. So now I am attempting to create another script that replaces that line. ...

3. UNIX for Dummies Questions & Answers

some help with the sed command please

hi all, attached you can find a small txt file ( .txt ), GIVEN that past_scheduler="islip" and scheduler="mucf" can somebody please tell me WHY sed 's/-u '$past_scheduler'/-u '$scheduler'/g' .txt > .txt.temp fails ? thanx

4. Shell Programming and Scripting

Convert Sed command to perl command

Hello, Can any perl experts help me convert my sed string to perl. I am unsuccessful with this. I have to remove this string from html files OAS_AD('Top'); I have come up with this. However the requirement is in perl. for find in $(find . -type f -name "file1.html") ; do cat $find |...

5. UNIX for Dummies Questions & Answers

sed insert command and variable expansion/command substitution

I know this script is crummy, but I was just messing around.. how do I get sed's insert command to allow variable expansion to show the filename? #!/bin/bash filename=`echo $0` /usr/bin/sed '/#include/ { i\ the filename is `$filename` }' $1 exit 0

6. UNIX for Advanced & Expert Users

sed command

Hi..... I'm using sed command for replace the words in a file cat >test.txt My test.txt contains Mary had a little ham Mary fried a lot of spam Jack ate a Spam sandwich Jill had a lamb spamwich Marry had a spicy wich $ sed 's/wich$/mirchi/g' test.txt output is: Mary had a little ham...

7. 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 ???

8. Shell Programming and Scripting

sed and awk giving error ./sample.sh: line 13: sed: command not found

Hi, I am running a script sample.sh in bash environment .In the script i am using sed and awk commands which when executed individually from terminal they are getting executed normally but when i give these sed and awk commands in the script it is giving the below errors :- ./sample.sh: line...

9. UNIX for Dummies Questions & Answers

Output of sed command to another sed command

Hi All, I'm relatively new to Unix scripting and am trying to get my head around piping. I'm trying to take a header record from one file and prepend it to another file. I've done this by creating several temp files but i'm wondering if there is a cleaner way to do this. I'm thinking...

10. Shell Programming and Scripting

Need help with sed command

Dear All, I want to replace a value corresponding to particular variable in file using sed. example xValue 10.0; I want to change its value to 19.1434 say. xValue 19.1434; How can I do that? Thanks & Regards, linuxUser_

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/sed Command : Parse parameter file / send the lines to the ksh export command

Discussion started by: rajan_san

2. Shell Programming and Scripting

Loop with sed command to replace line with sed command in it

Discussion started by: cbo0485

3. UNIX for Dummies Questions & Answers

some help with the sed command please

Discussion started by: OneDreamCloser

4. Shell Programming and Scripting

Convert Sed command to perl command

Discussion started by: abacus