hi,
Consider there is a file containing 200 lines. please let me know which command is to be used to put a semicolon at the end of each line. if no single command is there then how it can be achieved. (1 Reply)
Hi All,
I am using the below script to enter the URL at the end of file:
echo "Enter the URL that should point to the particular microsite"
read url
sed "$a $url" redirects.virgin-atlantic.com.conf > temp
But am getting the below error:
./script.sh:... (7 Replies)
Hi all,
I can use the following command to insert a ' at the beginning of each line
sed "s/^/'/g" test.txt > test1.txt
However, I'm unable to use the following to insert a ' at the end of each line in this way
sed "s/$/'/g" test.txt > test1.txt
Any... (3 Replies)
I have a file that is formatted in this way.
a1;b2;c33;d4;e5;e;f;f;f;s
d;ds;d;a;v;b;g;gr;r;rt;fdf
s1;s2;s2;s3;s4;
b1;f2;g3;h4;a3c4e;xcsd;fds;
sd2;fs4;fs2;sdf3;
I want to replace the value just before the 4th semicolon to empty string, regardless the value, such that it looks... (3 Replies)
Hi,
I have a script which I need to change. I want to add a semicolon at the end of each line where the line starts with "grant"
for e.g.
create table(....
);
grant select on TABL1 to USER1
grant select on TABL1 to USER2should become
create table(....
);
grant select on TABL1 to... (3 Replies)
Hi,
I wanted to create an automated script that will output a create table statement in unix. Below is the input and the desired output:
INPUT:
desc ZZ_APL_TIDDATELIST
(
TID NUMBER
AEX_DATE TIMESTAMP(6)
)
desc ZZ_APL_TIDLIST
(
TID NUMBER
)
desc... (5 Replies)
Hello Team,
Could you please help me with the below question?
I have a file with the following properties
1) File Delimiter is ;
2) Text columns are within double quotes
3) Numeric columns will not have double quotes
4) File has total 6 columns
Please see a sample record from file
... (3 Replies)
Hi there,
I am having this problem:
a) I am uploading a txt file from windows (notepad) with some Gaussian 09 command lines;
b) Gaussian needs in certain command files, that those files have a blank line at the end of the file!
c) I open the command file with vi and no blank line at the of... (2 Replies)
Discussion started by: luismga
2 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)