how much do you know on using the sed commands within a diff command? I'm currently using one long command when robot runs that... when the diff command is ran that the < and > signs at the beginning of each line are changed to the environment name that they came from... making it easier to... (2 Replies)
Hi ,
Seen some of wonderful posts. Please have look at my problem.
I have a text file ketkee.txt , which look like below.
GATES := apple mango banana
XMLCHECK := red blue green pink
My requiement is to find the line that has XMLCHECK in it. and append two variables followed by a space... (2 Replies)
I want to instert Category:XXXXX into the 2. line
something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong:
sed "2i\\${n}Category:$cat\n"
Sample:
Titel Blahh Blahh abllk sdhsd sjdhf
Blahh Blah Blahh
Blahh
Should look like... (2 Replies)
Hi guys,
I wanted to pass a variable to the sed command which tells which line to be deleted.
a=2;
echo $a;
sed '$ad' c.out
it is throwing an error.
sed: 0602-403 "$a"d is not a recognized function.
I even tried "$a" and \$a.. but it is of no use.
Can you please correct me... (6 Replies)
I know this script is crummy, but I was just messing around.. how do I get sed's insert command to allow variable expansion to show the filename?
#!/bin/bash
filename=`echo $0`
/usr/bin/sed '/#include/ {
i\
the filename is `$filename`
}' $1
exit 0 (8 Replies)
Hi,
I want to insert some text in the begning of each line. But issue is the text that i want to insert is stored into one variable. so my command look like
constr="`date | awk '{print $3"-"$2"-"$6}'`",MXGBTST1" "
sed 's/^/\$constr/g' alert_temp.csv
but sed command instead of taking... (3 Replies)
Hi All,
Can I use a variable (using this variable as a counter) in sed cmd?
something like below
sed -n '${COUNT}p'
But it's not working. Pls help.
Thanks.
Regards,
Amee
export COUNT=1
export COUNTER=`cat ${BINPATH}/$ALLOC_FILE.clean_1 | wc -l | tr -d " "`
while ... (3 Replies)
Hi All,
How can i use a variable in a sed command ? I cant seem to get it to work as at present its just printing $i at the start of every line rather than the variable $1.
sed -e "s/^/\$i,|/"
Any help would be appreciated. (3 Replies)
Hie everyone
i have a complex sed command line which work fine for a static value given
example
sed -n '/SQL ID\:\ 1111111111111/!b;:a;/\*\*\*\*\*\*\*\*\*\*\*\*/!{$!{N;ba}};{/*/p}' ./MyInputFile.txt
what i want is something like that
sed -n '/SQL ID\:\... (2 Replies)
Hi All,
Please help me with the below problem
if
then
$a=" "
fi
echo "ABC1abc" | sed 's/a/'$a'/'
The required output is : ABC abc
But I am getting the below error:
sed: -e expression #1, char 4: unterminated `s' command
Please help. (6 Replies)
Discussion started by: rahulsk
6 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)