Hi,
I have a fixed width flat file which has 1 as the first char and E as the last character. Some of the records have a carriage return /line feeds .
how do I remove them?
Let me know.
Thanks
VSK (8 Replies)
Hi folks,
I need to write a rollback script which removes the following line from the crontab:
0 0 * * * su - orca -c "/home/orca/core-<SCHEMA_NAME>/cleanup/CLI/cleanup_BRMS.ksh -c OC4J_RiGHTv_<SCHEMA_NAME>"
<SCHEMA_NAME> is parameter.
How to do it in ksh?
Maybe it's better to backup the... (2 Replies)
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... (11 Replies)
hi,,
i hav a file with many lines.i need to remove all lines before a line begginning with a specific pattern from the file because these lines are not required.
Can u help me out with either a perl script or shell script
example:-
if file initially contains lines:
a
b
c
d
.1.2
d
e
f... (2 Replies)
Hi All
I have what seems to be something quite trivial but for the life of me can't work out a solution.
Basically, I have the following script that reads a version report that contains certain flags. If a condition is true, I want to print the value of column 2, sort them uniquely and return... (2 Replies)
Hi
I would like to place in one line output from two functions. Both functions return text with print cmd.
When I place above code in script it will place them in series.
e.g.
1 #/bin/ksh
2
3 function1()
4 {
5 print "My name is"
6 ... (3 Replies)
Hi,
I am pasring a file line by line. I need to check each field in line and remove particular line.
input file lines are,
02;ABC;PQR
03;aaa;rrr
04;ABC;ggg
09;eee;ABC
04;lmn;stu
I am looking for line containing "ABC" as field value. Now How can I remove this line from input file... (7 Replies)
Hi everyone,
I'm very new to using sed, run through some tutorials and everything but I've hit a problem that I'm unable to solve by myself.
I need to remove all linefeeds that are followed by a particular character (in this case a semicolon). So basically, all lines starting with a semicolon... (5 Replies)
Hi All,
I've a csv file in which the record is getting break into 1 line or more than one line. I want to combine those splits into one line and remove the unwanted character existing in the record i.e. double quote symbol ("). The line gets break only when the record contains double... (4 Replies)
I have below file. I want to remove space at begining of every line and then after also remove blank line from file.
I use below code for each operation.
sed -e 's/^*//' < check.txt > check1.txt
sed '/^\s*$/d' < check1.txt > check2.txt
above code not remove all the space... (12 Replies)
Discussion started by: Mohin Jain
12 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)