Dear Folks :),
I am new to UNIX scripting and I do not know how can I insert some text in the first column of a UNIX text file at command promtp.
I can do this in vi editor by using this command :g/^/s//BBB_
e,g I have a file named as Test.dat and it containins below text:
michal... (4 Replies)
Hi all,
I need to insert new text and change existing text in a file. For that I used the below line in the command line and got the expected output.
sed '$a\
hi...
' shell > shell1
But I face problem when using the same in script. It is throwing the error as,
sed: command garbled:... (4 Replies)
Hi All,
Can someone pls help me to insert some text on a file.
my file contains something like below..
AKBULBU,
BALUMIL,
BATCH,BATCH
BOARROB,
BOTAKAT,
C57896,
CAKIOZE,
CHECMER,
CICOFRA,
CISZPAW,2194485
I want output as
USER_ID, LOGIN_ID (6 Replies)
Hello Team,
I need help in preparing script which will insert text from one file to other file.
I have requirement to prepare script which will insert data from one file to another file.
I have tried using sed and awk command but it is not useful to me as it does not append data in the... (12 Replies)
Hi,
I have a single value in insertval file. I want to load that value to database with the current date. I tried the below code but it is inserting <NULL> to database and echo $c is also null.
cat insertval | awk -F ' ' '{print $1}' > c
echo c=$c
data=`sqlplus -s user/pwd@hostname <<EOF ... (5 Replies)
Hello,
I'm doing an Shell Script to insert a text on XML file, i tried sed, awk, perl... i'm doing something wrong, please help me :)
well, the script is a bit large, i get some infos on script before 'run' this part to insert the text on XML...
domobile() {
let i++
echo
... (1 Reply)
Hi,
I need to insert "Hello World" text into a file called hai.txt using shell scripting. Kindly help me.
For eg: If I open the file hai.txt by giving linux command cat hai.txt, the content of the file should have the text Hello World in it.
Thanks (5 Replies)
Hi,
I am trying to check for missing dates in a file and would want to insert the missing date into the file.
Currently the script is as below
#!/bin/ksh
dates="dates"
cat ${dates} | grep -v "^#"
curr_month=`date '+%m`
curr_day=`date '+%d`
curr_year=`date '+%Y`
#curr_month=02... (7 Replies)
Hi All ,
I am looking to create one TCL script to insert one text based on some regular expression match on one file as stated below
Input File
module (mem1 ,mem2 , bist1 , ten2 , sen1 , land2 , taane2 ,
ran1 , ran2 , tri2 , tri8 , fly1 , fly2 , san2 );
output ran1 , ran2 , tri2 ,... (1 Reply)
Discussion started by: kshitij
1 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)
03-06-2009
