ls -ltr | grep string
How can I use regular expressions to filter the results provided even more. I am using the above command as a reference. (1 Reply)
Hi,
Wondering if anyone could help me with a simple script to filter out multiple things from a file.
Right now I just have long lines of grep -v remove file | greg -v etc etc
What I would like to do is have grep -v <run everything in a file> tofilter
If that makes sense. Basically a... (2 Replies)
I have ran into a small issue and I am not sure how to fix it.
In one of our current scripts we have this line which does a grep to get the pid of the process.
ps -ef | grep nco_p_syslog | grep $x | awk '{print $2}'
However this is not returning anything due to the how long the value... (7 Replies)
Hi
I need to to direct only the path and the name of the trace file to a new file. How do I use grep/awk/sed filter?
eg.
ABC.root>cat alert_omc_dg.log | grep trc
ORA-00060: Deadlock detected. More info in file /u01/oradata/omc/udump/omc_dg_ora_3555.trc.
ORA-00060: Deadlock detected. More... (8 Replies)
I am running a grep query for searching a pattern, and the output is quite huge. I want only the last 200 lines to be displayed, and I am not sure if tail will do the trick (can tail read from std in/out instead of files?).
Please help me out. (1 Reply)
Hi,
I can write sh script for Linux platform
I run:
netstat -an | grep -P '\:'38''| grep ESTABLISHED
but result:
# netstat -an | grep -P '\:'38''| grep ESTABLISHED
tcp 0 0 172.16.1.107:383 172.16.1.81:49981 ESTABLISHED
tcp 0 0... (8 Replies)
Hi all,
I am trying to filter out those lines that contain a "non-alpha" character.
An example of my input is the following:
zygnematales grb
zygocactus grb
zygocactus_truncatus plt
zygodactyl_foot prt
zygoma prt
zygomatic prt
zygomatic_arch prt
zygomatic_bone ... (2 Replies)
Hi,
How can I run the grep search in a script to only include compute, not bigcomputer in following search input?
" properties = local compute"
" properties = local bigcompute"
Thank you.
-j (6 Replies)
Hi, I'm not very familiar witrh sed or awk and hope the somebody can help me to solve my problem. I need to filter a text report using grep, sed or awk. I would like to cut out text lines with the pattern INFO and if exists the following lines of the pattern DETAILS. I need te keep the lines with... (4 Replies)
Hi,
I am having a file like below
hello how are you
hello... (5 Replies)
Discussion started by: rohit_shinez
5 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)