All
I need a code in Ksh to search and replace a string in a file.
File A
---
AAAA A
BBBB B
CCCC C
DDDD E
FFFF F
File B:
--------
AAAA
BBBB
CCCC
DDDD (9 Replies)
I have korn shell script that genretaets 100 file based on template replacing the number.
The template file is as below:
$ cat template
file number: NUMBER
The shell script is as below:
$ cat gen.sh
#!/bin/ksh
i=1;
while ((i <= 100)); do
sed "s/NUMBER/$i/" template > file_${i}
((... (1 Reply)
Hi Experts,
I have a directory which have 500 ksh, they all have common path string.
I have replaced all the ksh in different directory so i need to change the path string.
Please help me how to search and replace it.
Thanks SKG (1 Reply)
Hi All,
I have a requirement to read a line from a file with some search string, replace any backslash characters in that line and store in a variable.
Shell script: replace.ksh
#!/bin/bash
file2=input.rtf
line=`grep "Invoice Number" ${file2} | head -1 | sed 's/\\//g'`
echo "start... (6 Replies)
Hello, I want to locate a special character in each line of a file and replace it with another string that contains a special character and $i (i is incresing each cycle)
string1: export IBAN=AAAAAAAAA . . . . export IBAN=zzzzzzzzzzz
I want it to be:
export IBAN=AAAAAAAAA . export... (1 Reply)
Hi All,
I have a file in which contains location of various data files. I want to change locations using sed. Find and replace strings are in a separate file. Content of this file (/tmp/tt) -
/dd/pp/test/test/1/ /pp/aa/test/dg1/
/dd/pp/test/test/2/ /pp/aa/test/dg2/
/dd/pp/test/test/3/... (2 Replies)
Hi, i need to read a line from a file and count the number of times it appear in, then continuous to the second line with the same. So when i count a line i have to remove all duplicates in the file to not count it another time.
while read line
do
n=$(grep -c $line File)
print "$line... (5 Replies)
Hi All,
I have a directory containing a lot of files and I want to search all files which contains IP addresses pattern and want to replace those ip addresses with equal number of, say, some character, 'x'. So after replacement the file should not contain any IP address. Like
10.122.53.5 ->... (3 Replies)
Dear All,
I need you help, I have a file
allfile_dump.txt
\370380CoverPage124007001.pdf
\370381CoverPage124007002.pdf
\370382CoverPage124007003.pdf
\370383CoverPage124007004.pdf
\370384CoverPage124007005.pdf
\370385CoverPage124007006.pdf
\370386CoverPage124007007.pdf... (8 Replies)
My variable contains the following string
I wish to replace \n with "space" so the expected output is:
I understand that the /n is not a new linein this case.
I'm on AIX using ksh shell. Below is all that I tried.
echo $str | sed -e "s#\n# #g";
echo $str | sed -e "s#\n#' '#g";... (5 Replies)
Discussion started by: mohtashims
5 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)