I have this files:
./frm/lf_mt1_cd.Ic_cell_template.attr
./die/addgen_tb_pumd.Ic_cell_template.attr
./min_m1_n.Ic_cell_template.attr
When I use:
awk -F\/ '{print NF}'
Would result to:
3
3
2
I would like to list the files with 3 fields on it. Any Suggestions? (1 Reply)
Hi!
How can I print out a specific range of rows, like "cat file | awk NR==5,NR==9", but in the END-statement?
I have a small awk-script that finds specific rows in a file and saves the line number in an array, like this:
awk '
BEGIN { count=0}
/ZZZZ/ {
list=NR
... (10 Replies)
Hi, I am n00b to shell scripting and I am learning Ksh, sed and awk. I have a requirement and need your help.
1) How to read a specific section of a file. I have a file and I want to read the contents between say "Page Number:1" to "End of Page 1"
2) Within the section of the file that was... (2 Replies)
I have searched the forum for this - forgive me if I missed a previous post.
I have the following file:
blah blah blah
blah blah blah
blah blah blah
blah blah blah
blah blah blah
alter table "informix".esc_acct add constraint (foreign key (fi_id)
references "informix".fi ... (5 Replies)
Hello friends,
I searched in forums for similar threads but what I want is to have a single awk code to perform followings;
I have a big log file going like this;
...
7450494 1724465 -47 003A98B710C0
7450492 1724461 -69 003A98B710C0
7450488 1724459 001DA1915B70 trafo_14:3
7450482... (5 Replies)
Hi friends,
This is sed & awk type question.
I have a text file which has numbers spread all over the file. I want to sum the series of numbers whenever i find it and produce an output file with the sum. For example
###start of input text file ####
abc
def
ghi
1
2
3
4
kjld
random... (3 Replies)
Hello,
I have to a add 2 lines to /etc/sudoers file under this section below, can someone please suggest script to add these two lines when execute this remotely on to a multiple servers.
before
## Allow root to run any commands anywhere
root ALL=(ALL) ALL
After
## Allow root... (2 Replies)
Hi there,
I have a script that I've used to find errors in my Minecraft Server logs. But I'd like to refine that script to be more useful.
Here is the script:
grep -n "SEVERE" /minecraft/server.log | awk -F":" '{print $1-2 "," $1+10 "p"}' | xargs -t -i sed -n {} /minecraft/server.log >>... (15 Replies)
In the awk I have a very large tab-delimeted file that I am trying to extract the DP= value put it in $16 and add
specific text to $16 with . (dot) in $11-$15 and $18. Only the lines (there are several) that have the formating below in file
will have an empty $16. Other lines will be in a... (6 Replies)
Discussion started by: cmccabe
6 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)