Hi
We are having a requirement where one shell script, say a.sh (which uses Java and connects to Oracle database using JDBC) keeps on running everytime. I created a wrapper (to check whether a.sh is running and if not then to start it) and scheduled it in the crontab. Now all the output from... (3 Replies)
I have a Bourne Shell script that is normally run as a background job and redirects it's output to a file internally (using exec >>); I use "set -x" to capture each command which provides me with a nice shell execution log if it all goes to pieces.
I now also need to be able to also run this as... (4 Replies)
Hi,
I am unable to get this script to work as desired. Basically, if an argument "log" is sent into the script, it outputs the result of the Make to a file output.log. However, if the argument is not passed, I want the output to be just put on screen (no redirection). See code snippet below.
#... (3 Replies)
Hi,
Below is the whole string which is to be redirected to the new file.
su - oracle -c "exp $user/$pass file=/oracle/oradata/backup/exp_trn_tables_`date +%d_%b_20%y_%H_%M_%S`.dmp log=/oracle/oradata/backup/exp_trn_tables_`date +%d_%b_20%y_%H_%M_%S`.log tables=table1,table2 statistics=none"
... (3 Replies)
Hi,
I want to redirect my script output to more than one file without printing the result to the screen. How to do that?
ex:
echo "hi" >> a.txt b.txt
cat a.txt
hi b.txt
:confused: (2 Replies)
Hello friends:
I login to solaris with a username/Password and I can see quite a lot of previous I use dbefore, it accumulates a lot, I hope to output them into a Command.txt file as reference, not copy/paste 1 by 1, is there any way I can collect all commands in batch then put into a file,
... (3 Replies)
Hi,
I am new to shell scripting and have a question. I would like to redirect the output of multple commands to single file, From what I read from the bash manpage and from some searching it seems it cannot be done within the shell except setting up a loop. Is it?
I am running all clearcase... (1 Reply)
I'm very new to shell scripting and am practicing how to write a script, then redirect the output into an HTML file, and then email both the script and the HTML file to myself. I have created a script called sysinfo_page, and thought it would have redirected the output into the sysinfo_page.html... (3 Replies)
1. The problem statement, all variables and given/known data:
I'm having trouble redirecting the output of my sysinfo_page script into my sysinfo_page.html file. The task at hand is to be able to email both the html file and the script to myself. I'm assuming that the html should appear as a web... (8 Replies)
Hi,
I have created script which redirect the output to file.I am able to get the output in file but not in the format.
Output :Content of the log which have 10 -15 lines.
Actal :Line1 ..Line 2Line3 Line4 Line 5
Expected:Line1
Line 2
Line3
Please... (7 Replies)
Discussion started by: karthik771
7 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)