OK, so I am that "somebody else"~
You can't redirect your output to the original input file, that would just wipe out the whole file. you can use the i option to replace text in place. man sed for more info.
Hi,
Iam doing the following using sed in a script , it is NOT working
line_old= 3754|Yes|Yes
line_new= 3754|Yes|Yes|Yes|Yes
sed -e 's/$line_old/$line_new/' data.$$ > tmp.$$
mv tmp.$$ data.$$
Regards (5 Replies)
I am working on sed ... to replace a string... but not able to save.
i need to repalce a string in httpd.conf in numerous directories.
I am doing this
find /opt/apache/*/conf/ -name httpd.conf -exec sed 's/LogLevel debug/LogLevel error/g' {} \;
even tried with
find... (4 Replies)
Hi All,
I need to modify ifcfg-eth0 file. The file currently contains the following:
ONBOOT=no
The desired output of the file is:
ONBOOT=no
DEVICE=eth0
BOOTPROTO=static
IPADDR=234.235.34.56
NETMASK=255.255.255.0
GATEWAY=234.235.34.1
I know sed can help me in this, and... (4 Replies)
Hi All,
Need some assistance n my script.
My file is LBXBC040904071724 and output should be LBX0904071704
tempFile=`echo $file | cut -c 4-7`
tempFile1=`echo $file | sed -e s/$tempFile//`
min=`expr substr $tempFile1 12 2`
cycleno=`expr substr $tempFile 3 2`
newFile=`echo $tempFile1 |... (2 Replies)
hi i want to append the number in each file,but when i ran this command:-
sed -i "1i 50" filename
its giving error sed: illegal option -- i in HP unix
but its working in linux.
any advice !!!!!!!!! (6 Replies)
I dont get something about sed
If i have a text file inside contain a:a:a:a:a
sed "s/"$title:$author:$price:$qtyAvailable:$qtySold"/"$Ntitle:$author:$price:$qtyAvailable:$qtySold"/"
This work!! i can change a to be something else
but
If i have a text file inside contain Tom Tom:La... (2 Replies)
sed -i '' 's:'<string>/Users/testuser/Desktop/test.sh</string>':'something':g' log.txt
The log file has this in
<string>/Users/testuser/Desktop/test.sh</string> and I want to change it to something
This code isn't working any ideas? Its doing my head in! (4 Replies)
Hello There -
Iam trying to get this expdp running for oracle backup.
And this is the code below:
### Run the export.
### Comment out any LOGFILE parameters in the .par file.
if grep -i "Logfile" /<Path>$1_$2_$3.par; then
## Comment out any LOGFILE... (7 Replies)
I have a text file containing multiple lines like
password="&test.";
password="xyz";
password='write some';
password="&testwrite.";
today='o1jan2017'd;
-----------------
------------------
I don't want to replace the string value which are starting with & for Password variable... (3 Replies)
Discussion started by: harshabag
3 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)