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1. UNIX for Beginners Questions & Answers
I am receiving the below output in text format. The output is converted to HTML table using the code mentioned below
output in text
LogDate DayOfWeek/Hours _0_ _1_ _2_ _3_ _4_ _5_ _6_ _7_ _8_ _9_ _10_ _11_ _12_ _13_ _14_ _15_ _16_ ... (3 Replies)
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2. Shell Programming and Scripting
I need to create a fixed width file based on the column lengths.
lets assume I have six(this may be dynamic) fields each are of different length
column1=6 #size of the column
column2=3
column3=2
column4=3
column5=4
column6=5
I tried below code snippet but it is not working
echo... (4 Replies)
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Hi all,
I am having the file below
I need that as below
Thanks,
Arun (12 Replies)
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Hi All,
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5. Shell Programming and Scripting
Hi,
I have a file where I would like to add a prompt type object_name
statement before every create commnad
create or replace force view test_view_01
(
col1
col2
col3
)
as
(select a,b,c from sometable );
create or replace view test_view_02
(
col4
col5
col6
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6. Shell Programming and Scripting
Pls help in formatting a txt file using shell scripting
Input file format:
Name priya 2010-09-21 10:43:49
TEXT ID 1
hi
TEXT ID 2
how
TEXT ID 3
r
TEXT ID 4
u
Output required:
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I have a file called vm.cfg .
content of file.
acpi = 1
apic = 1
builder = 'hvm'
How would i write a script which will add
boot = 'd' at 3rd line.
For example.
after running the script the file should be like below.
acpi = 1
apic = 1
boot = 'd'
builder = 'hvm'
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Hi,
I am new to unix , I have a requirement for formating the input file and generate the output file as per the downstream requirement ..
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Hello,
I wrote a script that does lot of things, and I would like to change the format of a number but without printing it now (so I don't want to use printf as it will print the value immediately).
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awk 'BEGIN{number=0.01234567}
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10. UNIX for Dummies Questions & Answers
I have two files file1 and file2 as shown below:
file1:
name
nameabc
bcd
nameabcdefg
file2:
age
age1111
age2345
age6743
I have pasted one file on the other with the delimiter "|" and the resulttant file is:
name|age
nameabc|age1111
bcd|age2345
nameabcdefg|age6743 (1 Reply)
Discussion started by: udiptya
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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)