i have a file whose data is like this::
osr_pe_assign|-120|wg000d@att.com|4|
osr_evt|-21|wg000d@att.com|4|
pe_avail|-21|wg000d@att.com|4|
osr_svt|-11|wg000d@att.com|4|
pe_mop|-13|wg000d@att.com|4|
instar_ready|-35|wg000d@att.com|4|
nsdnet_ready|-90|wg000d@att.com|4|... (6 Replies)
I have a large(ish) pipe delimited file.
The last line of the file contains a total row count and a checksum:
END|1537451|1328569446
After making other adjustments to the file, I need to strip out the checksum and apply a new value - I have a script to generate the checksum and 'cat' it... (3 Replies)
Hi All,
I have space delimited file similar to the one as shown below.. I need to convert it as a pipe delimited, the values inside the pipe delimited file should be as highlighted...
AA ATIU2345098809 009697 005374
BB ATIU2345097809 005445 006518
CC ATIU9685098809 003215 003571
DD... (7 Replies)
Hi All,
I have a requirement where I need to go to a directory, list all the files that start with person* (for eg) & read the most recent file from the list of files.
While browsing through the forum, i found that the command ls -t will list the files. I am trying to generate the output... (1 Reply)
I have a file which was pipe delimited, I need to make it tab delimited. I tried with sed but no use
cat file | sed 's/|//t/g'
The above command substituted "/t" not tab in the place of pipe.
Sample file:
abc|123|2012-01-30|2012-04-28|xyz
have to convert to:
abc 123... (6 Replies)
Hi,
I am trying to search for a string in a file and print all the matched lines as pipe delimited format.
My command is
cat m_gid_trans.XML|grep -i '<TABLEATTRIBUTE NAME ="Lookup cache directory name"'
The output I am getting is
<TABLEATTRIBUTE NAME ="Lookup cache directory name"... (4 Replies)
Hi guys,
I need to know how i can ignore Pipe '|' if Pipe is coming as a column in Pipe delimited file
for eg:
file 1:
xx|yy|"xyz|zzz"|zzz|12...
using below awk command
awk 'BEGIN {FS=OFS="|" } print $3
i would get xyz
But i want as :
xyz|zzz to consider as whole column... (13 Replies)
I have a small quandry. I had server reports that I pulled from a database that came out pipe "|" delimited. The developers have now changed the format to CSV. The issue is that some fields have quotes around the text and other fields are blank with strings of commas denoting each field. To further... (2 Replies)
Hi, I have a rquirement in unix as below .
I have a text file with me seperated by | symbol and i need to generate a excel file through unix commands/script so that each value will go to each column.
ex:
Input Text file:
1|A|apple
2|B|bottle
excel file to be generated as output as... (9 Replies)
Since output of w command have variable number of columns I want to get the output in pipe delimited format. I tried
export OFS="|"; w
but that does not work.
Any ideas? (4 Replies)
Discussion started by: Soham
4 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)