hi,
I'm trying to use sed to erase everything, up to, and including, the first closing parenthesis. for example:
input: blah blah blah (aldj) test (dafs) test test.
output: test (dafs) test test.
how would i do this?
I was fooling around with the parenthesis, and i only got it to apply to... (5 Replies)
I want to use sed to look for spaces in text and when find one move the next word to the next line.
I used:
sed 's/ /\n/g' out > new
However when there is more than one space between two words it adds more lines between them. And I just want the words to be one under another. How can I... (2 Replies)
hello
i have a file (myfile) contains line as follows
/home/mytarget/myproject
i want to add a pattern at the end of this line.
my pattern is- /.*mk
i want like it - /home/mytarget/myproject/*.mk
i tried sed like
sed 's/$//*.mk/' myfile > newfilename, but not wrking.
pls... (2 Replies)
Dear experts,
I have a file called "check" with contents like below
i used the sed command like below to get the value of "success" and "failed" only
My question is how can i get the value to include the time "03:15", so that i can get a value such as below : -
Appreciate... (4 Replies)
In a LaTeX manuscript, I need to replace many occurrences of
\emph{some string}
with some string, i.e. whatever string is inside. The string inside often may extend over several lines, and there may be other occurences of curly brackets inside it. So for example
\emph{this \it{is} a... (5 Replies)
dears
i have the data below, i want a command ( i think it should be sed) that add a space after the seconds as below :
Jun 24 22:28:18966568406148@
Jun 24 05:47:35966555747744@
Jun 24 05:47:53966560825239@
Jun 24 06:07:52966541147164@
Jun 24 15:49:55966566478883@
thanks... (5 Replies)
I use the following as part of a script to correct for a faulty hostname file.
# get the domain name
read -r thehostname < /etc/hostname
dom="$(echo $thehostname | cut -d'.' -f2)"
numchar=${#dom}
if
then
echo "It appears as though the hostname is not correctly set."
echo "Hostname has... (5 Replies)
sed 's/<\/body>/<A HREF='"$index"'>'"$description"'<\/A>\
<\/body>/' "$index"
This will work from the command prompt, but not from my ksh script.
Why not?
sed: command garbled: s/<\/body>/<A HREF=/accounts/students/b/bmwg6c/public_html/index.html>I would like to call it white... (4 Replies)
I have the following text as an input text:
input.txt
Results('Toilet', 'Sink', )
and i want to remove the last comma so the output is
output.txt
Results('Toilet', 'Sink' )
I tried using the following sed command, but I get a parsing error:
sed s/, \)/\)/g input.txt >... (5 Replies)
Hi.. I have this delicate problem..:wall: I have this huge ldif file with entry's like this example below..
And I need to change the following entrys.
telephoneNumber:
emNotifNumber:
billingnumber=
BillingNumber:
Al these entrys has a number like 012345678 and it needs to add one more... (15 Replies)
Discussion started by: pelama
15 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)