You would have to escape every single / in the URI so it doesn't conflict with the sed delimiter /, or you could change the delimiter as highlighted in red.
Also, even when it probably would not make a noticable effect here, the . (dot) means any character except the newline inside the regular expression of sed substitution.
Hello,
The following sed command is giving error
sed: -e expression #1, char 13: unknown option to `s'
The sed command is
echo "//-----" | sed "s/\/\/---*/$parChk/g"
where parChk="//---ee-"
How can i print the variable value from sed command ?
And is it possible to replace a... (2 Replies)
hi,
when i am doing the following things getting error
Can anyone please suggest
i have a file where there is a line like the following
branch=dev sdf dev jin kilii fin kale boyle dev james dev
i want to search the existance of dev in the above line.
cat "$file" | sed -n... (8 Replies)
I have a File with the below contents
File1
I have no prior experience in unix. I have just started to work in unix.
My experience in unix is 0. My Total It exp is 3 yrs.
I need to replace the first word in each line with the last word for example
unix have no prior experience in... (2 Replies)
how would you get SED to do the following, say you have the following lines in a text file:
user=tigger
some text some text
some text some text
some text some text
user=ted
some text some text
some text some text
some text some text
user=thekingofrockandroll
you want to find any line... (15 Replies)
Hi,
I have been trying to replace the key word
"SQL> spool off "
with
"/
show errors"
with out double quotes in all the files in a directory.
above show erros should be displayed next line
Could you please help me how to do that.
I have tried something like this... (3 Replies)
Hello All,
I am running a command find . -name amp.cfg | cut -c 3- which gives me output something like below
rel/prod/amp.cfg
rel/fld/amp.cfg
deb/detail/amp.cfg
deb/err/amp.cfg I want to remove trailing "/amp.cfg" so that i should get output something like... (7 Replies)
Hi Folks,
Could you please advise what will be the SED command to replace a word in all xml's under a particular directory
for example let say I rite now at the following below location
$ cd /ter/rap/config
now under config directory there will be lots of xml file , now my objective is to... (1 Reply)
Dear ALL,
I have sample file :
IDcentos-forum,bash,linuxCentOS,GNome
IEfedora-milis,cli,linuxRedhat,KDE
IRfreebsd-milis,aix,unixbsd,pyton
required output:
centos,bash,linuxCentOS,GNome
fedora,cli,linuxRedhat,KDE
freebsd,aix,unixbsd,pyton
Can you help me pls.. (1 Reply)
hello Team,
I am looking for sed command or script which will append word at end of line. for example. I want to validate particular filesystem with mount |<filesystem name> command. if nodev parameter is not there then it should add in the fstab file with receptive to the filesystem.
# mount... (8 Replies)
Discussion started by: ghpradeep
8 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)