Unix gurus,
I have a file as below, which is basically the result set obtained from a sql query on an Oracle database.
ID PROG_NAME USER_PROG_NAME
-------- --------------- ----------------------------------------
33045 INCOIN Import Items
42690 ... (3 Replies)
Hi
Following is an example line.
echo "192.22.22.22 \"33dffwef\" 200 300 dsdsd" | sed "s:\(\ *\ \):\1:"
I want it's output to be
200
However this is not the case. Can you tell me how to do it? I don't want to use AWK for this. Secondly, how can i fetch just 300? Should I use "\2"... (3 Replies)
This seems to be a stupid basic question, but I cant get the space to stick in the awk variable.
I do use this command to grep a time range of the log file.
cat /var/log/daemon.log | awk '$0>=from&&$0<=to' from="$(date +%b" "%e" "%H:%M:%S -d -24hour)" to="$(date +%b" "%e" "%H:%M:%S)"
I now... (9 Replies)
I am trying to change the date format for the following:
YESTER=`TZ=aaa24 date +%b" "%d | sed 's/0/ /'`
TraceList=$(ls -ltR /pdt/logs | grep "$YESTER" | awk '{print $9}')
CMD2=$(find /disk/dan/dansFiles/pass/logs/$TList -name cmd\* -prune)
what I am trying to do in the above... (1 Reply)
Hello,
I wondering how I can echo a string without having the trailing whitespace removed.
For example I have a string str="TESTING123 " that I need to hash using sha1. I get the correct answer when I run the line below from the terminal
$ echo -n "TESTING123 " | openssl sha1... (3 Replies)
Hi again
I have an xml file and want to remove the leading white space as it causes me issues later in my script
I see sed is possible but cant seem to get it to work
I tried
sed 's/^ *//' file.xml
output
<xn:VsDataContainer id="1U104799" modifier="update">
... (10 Replies)
I'm trying to do something pretty simple but its appears more complicated than expected... I've lines in a text file, separated by the comma and that I want to output to another file, without the first field.
Input file:
file1,item, 12345678
file2,item, 12345678
file2,item, ... (8 Replies)
Is there a reliable way to deal with whitespace in array indicies?
I am trying to annotate fails in a database using a table of known fails.
In a begin block I have code like this:
# Read in Known Fail List
getline < "'"$failListFile"'"; getline < "'"$failListFile"'"; getline <... (6 Replies)
The awk below executes and update the desired field in my first awk. However, the white space between
nonsynonymous SNV in $9 is being split into tabs and my attempt to correct this does not update the field
unless it is removed. I am not sure what I am doing wrong? Thank you :).
file1
... (4 Replies)
Hello is it possible with awk or sed to replace any white space with the previous line characters in the same position?
I am asking this because the file I have doesn't always follow a pattern.
For example the file I have is the result of a command to obtain windows ACLs:
icacls C:\ /t... (5 Replies)
Discussion started by: nakaedu
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)