Hi there
my file looks like this
1 a b c d e f
2 a b b c d e f f g h e t t
3 a c b d e f
4 a b c
i want to print the line which has the fields containing ONLY a b c, in this case the line 4.
How can i awk it !!!?
Many Thanks in advance! (8 Replies)
Hi
I have a folder that contain up to 1000 subfolder. Genereally i need just 2 or 3 of them and i can know apriori the name of the subfolder i want to keep.
I'd like to erase all the unnecessary subfolders.
I've tried with:
ls -l | awk '$8 !~ /name_fold/{print "rm -r " $8}'| sh
and it... (4 Replies)
Hi,
I have a file with lines like this.
2 7 18 ggcgt anna
2 7 18 hhchc sam
3 7 18 hhdjcc ross
4 7 18 hhcjd jenny
0 8 21 jjdhs sam
3 8 21 kkok bush
2 9 24 kosss BrenhamIf the values of the second column are equal, print only those lines with the least first column value. So in... (5 Replies)
hi all
from below text
"abcd,SYS_12345,xyz,PQR, ,"
I want to print only
"abcd,SYS,xyz,PQR, ,"
i.e. taking only first three 3 chars from 2 string of comma separated file
thanks (4 Replies)
I have the following contents in a file
---- CRITICAL: altered for /usr/bin/bin1 ---- OK: /usr/sbin/bin2 result fine ---- OK: /usr/sbin/bin3 result fine ---- CRITICAL: altered for /usr/bin/bin4 ---- OK: /usr/bin/bin5 result fine ---- OK: /usr/bin/bin6 result fine ---- CRITICAL: altered for... (9 Replies)
Hi,
I have file with thousands of lines somewhat similar to the below 6 lines
06MXXXXXXXXXXXXXXXX 0328 003529 J27300022 MICROSOFT *MSN
06<1 000000001344392 JPN151-85830 MSBILL.INFO F
06<A17087454000328651551 MSBILL.INFO ... (16 Replies)
Hi Gurus,
I have following input file. I tried multiple awk combinations to print selected columns without success.
HEX ID Name ver FLRGT Start Time Total Shared End Date
----- -------- --- ------ ------------------------ -------------- -------... (4 Replies)
I apologize in advance, but I continue to have trouble searching for matches between two files and then printing portions of each to output in awk and would very much appreciate some help.
I have data as follows:
File1
PS012,002 PRQ 0 1 1 17 1 0 -1 3 2 1 2 -1 ... (7 Replies)
Discussion started by: jvoot
7 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)