Hi,
I want to display only the file names of the ls command with a delimiter of comma.
For example:-
ls /etc/dir/N*
gives the following output
/etc/dir/N1 /etc/dir/N2 /etc/dir/N3
I want the output as N1,N2,N3,-->Here i need the final comma also.
Also, here /etc/dir is being... (2 Replies)
Hi.,
My file name is of the format:
name_abc_20100531_142528.txt
where.,
my timestamp is of the format:
yyyymmdd_hhmmss
How to extract the date strring and time string into seperate variables in the shell script, after reading the file as the input?
I want to get the variables... (9 Replies)
Hello All ,
i am a newbie in korn shell scripting trying to trim a sentence that is parsed into a variable . The format of the sentence has three words that are separated from other by a
" : " colon and "." period . Format of the sentence looks like
... (5 Replies)
Hi All,
I am working on a script which requires an input from user within one 1 min.
So if the user gives the required input within 1 min., it will execute on the basis of input provided by the user.Other wise it will execute on a default value(hard coded inside the script).
Now, I am... (19 Replies)
Hi All,
Thanks in Advance
I am working on a shell script. I need some assistance.
My Requirement:
1) There are some set of files in a directory like given below
OTP_UFSC_20120530000000_acc.csv
OTP_UFSC_20120530000000_faf.csv
OTP_UFSC_20120530000000_prom.csv... (0 Replies)
Hi All,
Thanks in Advance
I am working on a shell script. I need some assistance.
My code:
if
then
set "subscriber" "promplan" "mapping" "dedicatedaccount" "faflistSub" "faflistAcc" "accumulator"\
"pam_account";
for i in 1 2 3 4 5 6 7 8;... (0 Replies)
Hi
I need to extract the string from file name
filename: FILENAME_STRUT_01032013_XXXXXXX.TXT
I want 01032013 from the above file name. number of characters may differ before the required string but underscores(-) are same number i.e. after second underscore.
Please advise on this.
... (2 Replies)
Hello experts, I want to join a file with files whosE names are mentioned in one of the columns of the same file.
File 1
t1,a,b,file number 1
t1,a,c,file number 1
t2,c,d,file number 2
t2,c,e,file number 2
t2,c,f,file number 2
t2,c,g,file number 2
t3,e,f,file number 3
file number 1... (3 Replies)
I want to extract the filename from a string.
This is how I have the rawdata ina file
/home/sid/ftp/testing/abc.txt
/home/sid/ftp/tested/testing/def.txt
/home/sid/sftp/date/misc/hij.txt
i want a script which would provide me an output like this
Directory ... (10 Replies)
Discussion started by: sidnow
10 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)