Hi
means if the $line is one character wide, not if the number of fields amounts to one.
You could use e.g.
this gets my vote. i must've been in zombie land when i used ${#line} (not enough coffee...)
i've also recoded the other piece of code to this, you can use whichever you prefer...
the problem with the pure awk solutions is that the pattern has to be hard coded into the script... in the previous thread the OP mentioned he might just be entering pattern fragments, so he'd have to change the code everytime.
Hi All,
I have 1 million records file. Using awk, I am counting the number of records. But as the number is huge, after crossing a number, awk is displaying it in exponential format.
At the end, I need to verify this count given by awk with expected count.
But as it is in exponential format,... (3 Replies)
i have a line like this in my script
IP=`get_IP <hostname> | awk '{ print $1 }'
echo $IP
the problem is get_IP <hostname> returns data formated as follows:
ip 1.1.1.1 name server_name
the code above returns
1.1.1.1 server_name and i just need the 1.1.1.1
I have tried to add "|... (5 Replies)
I'm asking for explanation about the output of the diff format when i compare the two files f1 and f2:
root@host1 # cat f1
205226
205237
205250
205255
205262
205274
205307
205403
205464
205477
205500
205520
205626
205759
205766
205776 (2 Replies)
Hi,
while using following awk commend I’m getting confused,
The output is not like as the row present in input files, can anyone explain and tell me how to print in the order like in input.
value=$(awk 'FNR>1 && NR==FNR{a=$4;next} a{sum+=$4} END {for(i in sum){printf i"\t"sum/2"@@";}}'... (5 Replies)
Hi,
I am running two scripts as below.
In Script 1 i am getting correct output in proper HTML format while in script 2 i am not getting output in mail and only html code is getting printed.I want to get the output of script 2.
Please guide.
1.IFILE=/home/home01/Report.csv
if #Checks... (7 Replies)
I have a script that looks like this:
dirname2=/usr/tmp/filelist/*/*
for dirname2 in /tmp/filelist/*/*; do (cd $dirname2/catalog ||echo "file does not exist" && echo "$dirname2" |cut -d '/' -f 7,8 && echo $i && ls -la |awk 'NR>3 {SUM += $5} END { print "Total number of kb " SUM }');done... (2 Replies)
Hi,
I am trying to capture logs of the script in the file as well as on the screen. I have used exec and tee command for this. While using exec command I am getting the correct output in the file but, script output is not getting displayed on the screen as it get executed.
Below is my sample... (14 Replies)
Hello
I am working on one script where I am trying to display all the directories which is inside the workspace but somehow it is giving me weird output and this is occurring only with one directory other also having the result.html file inside the directory.
for i in `ls -1 | egrep -iv... (2 Replies)
The awk below runs and produces the following output on the file2. This is just an example of the format as the file is ~14MB. file1.txt is attached. I am trying to count the ids that match between the two files and out the ids that are missing. Thank you :).
file2
970 NM_213590 ... (2 Replies)
Dear all,
I am using sed as an alternative to grep in order to get a specific line from each of multiple files located in the same directory. I am using sed because it prints the lines in the correct order (unlike grep).
When I write sed code that prints out the output I get it correct, but... (1 Reply)
Discussion started by: JaNaJaNa
1 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)