guys can anyone tel me how to insert a line in a file(bash) using line number
i wanna insert the line using LINE NUMBER...i know for inserting above or below a perticular line we can use sed a\ or i\....
thanks in advance.... (7 Replies)
I have a file where each line starts with a "update" statement. I want to insert a new line, after each line, with the words "go" in the new line. Can someone help me out with this? (1 Reply)
Hi
Is there any command where we can insert a line "2|||" before every line starting with "3|"
my input is as follows
1|ETG|12345
3|79.58|||GBP||
1|ETG|12345
3|79.58|||GBP||
1|ETG|12345
2|EN_GB||Electrogalvanize 0.5 m2 ( Renault )
1|ETG|12345
3|88.51|||GBP||
desired output... (10 Replies)
Friends ,
I have a large file and i need to insert a line after every line.I am actually unaware how to do it.Any help appreciated.
My File
control station *ATM* , qread $OSS.Jul13A.FI01 interval 1 intcount 1
control station *ATM* , qread $OSS.Jul13A.FI02 interval 1 intcount... (4 Replies)
Hello,
I am new to this forum. I have a question in Unix shell scripting. Here is my requirement
I have 1000 files and I need to insert a header with one line at the top of
each of the 1000 files. Please let me know if you have any solution for this
Thanks in advance.
Raj (4 Replies)
I use zentyal for my server admin, which is great but zentyal auto-generates config file on boot and hence overwrites any changes made directly to config files. In order to allow multiple user access to a MS ACCESS database, I need to customise the smb.conf file and add the following line to the... (9 Replies)
Hello All,
I have following file contents
cat file
#line=aaaaaa
#line=bbbbbb
#line=cccccc
#line=dddddd
line=eeeeee
#comment=11111
#comment=22222
#comment=33333
#comment=44444
comment=55555
Testing script
Good Luck!
I would like to comment line line=eeeeee and insert a new line... (19 Replies)
Hi,
Please help me on this.
I want to insert data from text file to excel using shell script
nawk -v r=4 -v c=4 -v val=$a -F, 'BEGIN{OFS=","}; NR != r; NR == r {$c = val; print}' "file.csv"
I used above one to insert $a value in 4th row, 4th column in an excel file.csv and it... (3 Replies)
Hi all,
I want ot print a header with new line in the end. I am using echo
like echo "this is header"
I want output like
This is header
$
I tried -e also but it's not working. echo - e
Can anyone help please? (6 Replies)
Dear experts,
I am new to linux programming. I have a shell script which i should run it on all my samples.
I only define input and out put for this script. The inputs are 3 numbers(coordination numbers) which are available in a series of text file.
Since i have a lots of samples, it takes a... (5 Replies)
Discussion started by: mohamadreza
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)