You lost me. Which value from line 18 (FNR==18) do you want to save and append to the respective R- lines of that file?
To eliminate the A, Y, Z line try sth like
Hello people
I need to find a way to generate a file that contains the names of all *.jpg files that were generated after a specific date
The search should start in my current folder and recursively search inner folders
It would be best to list the file names one below the other in the output... (3 Replies)
Hi Expert,
I have some confusing to generate report from the log file as shown below:
filename :test1.log
start_time date end_time number code
P 000029.621 20070823 000029 12134567890 111111111111 00 0 000 003... (4 Replies)
Hi everybody,
I am wondering if there is any tool or website out there which can track who is viewing my resume. It is very frustrating when you send your CV or Cover Letter and you receive no feedback from the company, you don't even know if they have checked it out.
Thanks for your help (1 Reply)
hi,
i am facing a problem in merging two files using awk,
the problem is as stated below,
file1:
A|B|C|D|E|F|G|H|I|1
M|N|O|P|Q|R|S|T|U|2
AA|BB|CC|DD|EE|FF|GG|HH|II|1
....
....
....
file2 :
1|Mn|op|qr (2 Replies)
I copied all JPEGs from my laptop to an external drive using
find . -name "*.jpg" -exec cp '{}' ./media/Backup/pictures \;
And then deleted all of them from my laptop.
Now, I realize that I need the folder path of all the original JPEGs as the path has the important information.
I dont... (1 Reply)
Hi,
I'm trying to use perl to generate files based on sections in a large textfile.
This will create one file per section that starts with " ABC_":
perl -n -e '/^ABC_/ and open FH, ">output_".$n++; print FH;' largefile.txt
However, the output filenames will be on the form output_nn. This... (2 Replies)
Hi,
My requirement is,there is a directory location like:
:camp/current/
In this location there can be different flat files that are generated in a single day with same header and the data will be different, differentiated by timestamp, so i need to verify how many files are generated... (10 Replies)
i need my script1.sh to generate /tmp/temp.txt with full permissions i.e
-rwxrwxrwx 1 user1 users 23 Dec 16 10:52 /tmp/temp.txtmore script1.sh
umask 666
echo "hello">/tmp/temp.txt
But the script1.sh generates temp.txt with different permissions as shown below.
-rwxr-xr-x 1 user1 users... (6 Replies)
Hello,
I am using a script to create a random password for a user.
The file looks like
user1:thepassword1
user2:thepassword2
user3:thepassword3 Passwords are openssl passwd hashed. I have an own file where the password is written in cleartext.
Now i want to send an E-Mail to the... (8 Replies)
Discussion started by: Manu_H
8 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)