Hi Guys,
I have a file in which each set of records are separated by two blank line. I want to replace it with a single blank line.
Can you guys help me out?
Regards,
Magesh (9 Replies)
i have a file with the below content
file1.txt
ALERTADMIN.FIELD
ALERTADMIN.TX_ALERTS_LOG
i have another file
file2
ALERTADMIN.FIELD
ALERTADMIN.FIELD_WS
ALERTADMIN.SECTION_FIELD_WS
ALERTADMIN.TX_ACCT_PROCESSING_WORK_TABLE
ALERTADMIN.TX_ACCT_REVIEW_EXEC_METRICS... (2 Replies)
hi,
I have a doubt in replacing characters with blank.
My requirement is that, i have one file and looks like below
4:ALTER SYSTEM DISCONNECT SESSION '193,191' IMMEDIATE;
6:ALTER SYSTEM DISCONNECT SESSION '205,7274' IMMEDIATE;
5:ALTER SYSTEM DISCONNECT SESSION '206,34158' IMMEDIATE;... (4 Replies)
Hi,
I have data like below: The columns MARKET ,STORE, WEEK1 will be present always. After that, there can be week2, week3 columns or some times there wont be no columns after week1. The week1 or week2 columns can have data or blank. I need to replace the blank with NIS.
MARKET,STORE,STORE... (6 Replies)
Hi all,
I have a huge file and I need to get ride of the fields 6-11 and replace the blanks in field 5 with a missing value(99999).
159,93848,5354,343,67898,45,677,5443,434,5545,45
677,45545,3522,244,
554,54344,3342,456,
344,43443,2344,444,23477... (12 Replies)
hlow all i need help
how can i replace blank number with awk
input.txt
300::|355264313178490
301::|358814003239510
302::|358316038113400
303::|357954002633660
304::|354072040694090
305::|356956015214190
306::|352943020525180
307::|359574033836610
308::|381810990023580
so will be like... (4 Replies)
Need help to replace the line beginning with tcp_sendspace with a blank line.
# cat if
en0: flags=1e080863,480<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),CHAIN>
inet 10.27.53.21 netmask 0xffffff00 broadcast 10.207.52.255
inet... (11 Replies)
Hi all,
I have 89 columns,1200 rows in a flat file, some of the values are just '.' (the character dot). I want to replace them by nothing (blank), but when I do so, it affects the decimal numbers too. so 12.34 becomes 1234.
How can I just replace values which are only '.' with 1 white... (13 Replies)
hi,
i need to replace a blank tab output in a file to zero.
input file:
2015/08/04 00:00:00 171 730579 27088 <blank> 3823 30273 1621778 ... (6 Replies)
Dear All,
In a CSV file, say that a given column has been extracted. In that column, information is missing (i.e. blank lines appear). I would like to replace the blank lines by the last valid line (not blank) previously read.
For example, consider the extract below:
123
234
543
111... (7 Replies)
Discussion started by: bagvian
7 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)