HI,
I want to cut end string from line.
e.g. i have following input line
/users/home/test.txt
I want to get end string 'test.txt' from above line and length of that end string will change and it always start after '/'.
Thanks,
Visu (7 Replies)
Hello,
I need to delete the final few characters from a parameter leaving just the first few. However, the characters which need to remain will not always be a string of the same length.
For instance, the parameter will be passed as BN_HSBC_NTRS/hub_mth_ifce.sf. I only need the bit before the... (2 Replies)
Hi:
I have few rows in file..Like suppose...
9063C0 44 00051363603253033253347 3333 070248 06
9063C0 5G PAN00013
9063C0 44 00061030305040404250724 0506 100248 08
9063C0 43 01 00000089
I need to cut the row starting after... (5 Replies)
Hi All,
I have a string like "9633C01302_2". I need to extract the number(02) after "13" and before "_" and the number coming after "13" and before "_" is not constant, it keeps on changing...
Can some one plz help me wth the command..
i tried this echo "9633C01302_2" | cut -d'_' -f1 ..But... (2 Replies)
I have contents like
423562143124/53125351276
sdgas/347236
sjhdk;ls'ald/y62783612763
I need a command that would make the string before / and after / as separate output as (A should contain 423562143124 )and B should
contain 53125351276).
I tried but in vain.
Please help. (19 Replies)
Can someone please tell me how to do this...
input file - /etc/group:
wheel:*:0:root,timber
daemon:*:1:
mysql:*:88:
...etc...
giants:*:1001:dalton,bandit
dalton:*:1002:
bandit:*:1003:
output file (my goal):
giants:*:1001:
dalton:*:1002:
bandit:*:1003:I've come up with this:
... (3 Replies)
hi, i've searched the forums' entries and have tried some of the examples -- to no avial -- this is my first post -- thanks in advance for your help...
As part of an installation program -- i'm receiving two(2) extraneous "libcxb WARNING!" statements -- i want to use sed to eliminate the... (12 Replies)
Hi
I have a 57 line text file and I want to cut first 6 line assigned it to a veriable and again cut next 6 line assigned to same variable till the time file have left 0 line.
Please let me know how I can do in scripting.
Thanks
Sanjay (6 Replies)
Can any one help me out with following problem...
I want to search in a file which has two strings repeat each time(like start and end) i want to search between these two string in C programming.
please help me with the solution.
thanks in advance. (8 Replies)
in the below data i need to search for the word typeMismatch and then traverse back to find the filename of that particular mismatch. Like this we have to get all the file names which has error in them. How can i acheive this.
I tried use sed or awk but not able to achevie the same.
Sample... (2 Replies)
Discussion started by: ATWC
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)