07-29-2011
Ok, you do not have GNU date and you have two patterns in your input file. You want that there is only one pattern.
Mon Jul 18 00:32:52 EDT 2011,NULL,UAT # changes to Jul 18 2011,NULL,UAT
Jul 19 2011,NULL,UAT # not changes
Yes?
---------- Post updated at 11:53 AM ---------- Previous update was at 11:49 AM ----------
You don't need and date command if I'm right about pattern but it's just a habit (maybe bad one) to ask about it any time when I see questions about date manipulations.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Plzzzz, tell me some script about this...
What does this mean ?
sed '/^ */s///'
sed '/^/s// /'
and why it's diferent ???
sed '/ */s// /g' and sed 's/ */ /g'. It's all the same ???
Thanks you very much (2 Replies)
Discussion started by: mle
2 Replies
2. Shell Programming and Scripting
$ cat log.txt
Name Age Sex Lcation nfld alias xsd
CC 25 M XYZ asx KK Y
BB 21 F XAS awe SS N
SD 21 M AQW rty SD A
How can I replace the column with header "Lcation" with the column with header "alias" and delete the "alias" column?
so that the final output will become:
Name Age Sex... (10 Replies)
Discussion started by: jkl_jkl
10 Replies
3. Shell Programming and Scripting
Hi, i read couple of threads here on forum, and googled about what bugs me, yet i still can't find solution.
Problem is below.
I need to change this string (with sed if it is possible):
This is message text that is being quoted
to look like this:
This is message text that is being quotedI... (2 Replies)
Discussion started by: angrybb
2 Replies
4. Shell Programming and Scripting
Need help with either sed or awk to acheive the following
file1
-----
In the amazon forest
The bats eat all the time...
mon tue wed they would eat berries
In the tropical forest
The bats eat all the time...
on wed bats eat nuts
In the rain forest
The bats eat all the time...
on... (2 Replies)
Discussion started by: jville
2 Replies
5. Shell Programming and Scripting
Hi,
Kindly need your expertise in this problem.
I have to search and replace data. The problem is, the data is in the same format but slightly different content. What I need is sed commands that can work for those "slightly different content".
input: ... (3 Replies)
Discussion started by: Alvin123
3 Replies
6. Shell Programming and Scripting
Hi,
I have two files master.txt & reference.txt. Sample below
Master.txt
2372,MTS,AP
919848001104,Airtel,DL
0819,MTS,MUM
919849788001,Airtel,AP
1430,Aircel MP,20
Reference.txt
2372,919848701430,46467
919848002372,2372,47195
2372,919849788001,59027
0819,028803,1
0819,029801,1... (2 Replies)
Discussion started by: siramitsharma
2 Replies
7. Shell Programming and Scripting
Hi,I have 2 files master.txt & reference.txt as shown below & i require o/p as mentioned in file 3 using awk but content is not replacing properlymaster.txt:... (15 Replies)
Discussion started by: siramitsharma
15 Replies
8. Shell Programming and Scripting
I need to be able to search for a string in the first column and if that string exists than replace the nth column with "-9.99".
AW12000012012 2.38 1.51 3.01 1.66 0.90 0.91 1.22 0.82 0.57 1.67 2.31 3.63 0.00
AW12000012013 1.52 0.90 1.20 1.34 1.21 0.67 ... (14 Replies)
Discussion started by: ncwxpanther
14 Replies
9. Shell Programming and Scripting
how to search and replace string in column in file with command sed or other
search "INC0000003.in" and replace column 4 = "W"
$ cat file.txt
INC0000001.in|20150120|Y|N|N
INC0000002.in|20150120|Y|N|N
INC0000003.in|20150120|Y|N|N
INC0000004.in|20150120|Y|N|Noutput... (4 Replies)
Discussion started by: ppmanja3
4 Replies
10. Shell Programming and Scripting
I am passing a variable and replace nth value with the variable.
I tried using many options in awk command but unable to ignore the special characters in the output and also unable to pass the actual value.
Input : "1","2","3"
Output : "1","1000","3"
TempVal=`echo 1000`
Cat... (2 Replies)
Discussion started by: onesuri
2 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)