I am searching a dhcpd.conf to find the hardware ethernet match, then once the match is found delete just the line above it. For example:
testmachine.example {
hardware ethernet 00:00:00:00:00:00;
fixed address 192.168.1.100;
next-server 192.168.1.101;
filename "linux-install/pxelinux.0";
}... (3 Replies)
hi,
i am parsing a file, in that searching for lines those contains "$threadNo.Received message:" , if that line contains the required fields write them into a separate file other wise ignore them.
i am using the following code,but it is printing all the lines , i dont want to rpint , please help... (3 Replies)
Hi All,
I need some help in writing a small script using Awk.
My input file has following deatils
A,B,C,D
8239359,8239359,8388125,8388125
8239359,8239359,8388125,8388125
7165981,7165981,8363138,8363138
8283830,8283830,8382987,8382987
8209964,8209964,8367098,8367098 ... (8 Replies)
Hi folks,
I've list of LDAP records in this format:
cat cmmac.export.tmp2
dn: deviceId=0a92746a54tbmd34b05758900131136a506,ou=devices,ou=customer,ou=nl,o=upc
cmmac: 00:13:11:36:a5:06
dn: deviceId=0a92746a62pbms4662299650015961cfa23,ou=devices,ou=customer,ou=nl,o=upc
cmmac:... (4 Replies)
Hi,
How to delete the last line if is match the below string else no action...
String checking "END OF FILE. ROW COUNT: "
9f680174-cb87-4f71-887a-93b6f62fa5aa|20077337254|2
9f680174-cb87-4f71-887a-93b6f62fa5aa|20077337254|0
229f680174-cb87-4f71-887a-93b6f62fa5aa|20077337254|3
END OF... (2 Replies)
Here is my file:
700 7912345678910
61234567891234567891
700 8012345678910
61234567891234567891
I want to pull all lines that begin with '700' only if columns 11-12 are '79'.
My code so far only pulls the '79', not the whole line:
grep ^700 file1 | cut -c 11,12 |... (7 Replies)
file:
1|12322|tow|
5|23422|pow|
6|23423|cow|
3|34324|how|
deletelines:
12322
23423
My command to delete line
while read NUM
do
awk -F"\|" '$2 !~ /`"$NUM"`/' file >file.back
mv file.back file
done<deletelines (3 Replies)
Team,
I am writing a shell script to perform few health checks of the system, where I need to delete the previous line in the text file after pattern match using sed (or) awk.
Could you please help me out on this?
For example,
<td>
<td style=color:green align=center>
</td>
</tr>... (6 Replies)
Discussion started by: Nagaraj R
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)