10 More Discussions You Might Find Interesting
1. Linux
Hi Team,
My linux version is Linux 2.6.32-71.el6.x86_64 #1 SMP Wed Sep 1 01:33:01 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
Now /var mount point is full, and I don't know what files to delete from this file system.
When I checked /var/log there are lot of log files starting with name... (3 Replies)
Discussion started by: Bhavi
3 Replies
2. Shell Programming and Scripting
Hi
My directory structure is as below.
dir1, dir2, dir3
I have the list of files to be deleted in the below path as below.
/staging/retain_for_2years/Cleanup/log $ ls -lrt
total 0
drwxr-xr-x 2 nobody nobody 256 Mar 01 16:15 01-MAR-2015_SPDBS2
drwxr-xr-x 2 root ... (2 Replies)
Discussion started by: prasadn
2 Replies
3. Shell Programming and Scripting
i try to find way to make string concatenation in csh ( sorry this is what i have )
so i found out i can't do :
set string_buff = ""
foreach line("`cat $source_dir/$f`")
$string_buff = string_buff $line
end
how can i do string concatenation? (1 Reply)
Discussion started by: umen
1 Replies
4. Shell Programming and Scripting
Hi,
I was working on the password policy settings of Solaris where i wanted to grep the results of MINDIFF and comparing it to if else to make it into a auditing script.
I stored the grep into VAR1 and compare it if MINDIFF=3 but it doesnt work.
Can anyone help me with it?
!#/bin/bash
... (2 Replies)
Discussion started by: Jareddd
2 Replies
5. Shell Programming and Scripting
Hey Guys,
I have been searching but unable to find solution for this;
Got 2 files:
#File A
A
B
C
#File B
1
2
3
And would like to 'merge' file and get a out put like;
A1
A2
A3
B1 (2 Replies)
Discussion started by: bsdguy
2 Replies
6. Solaris
Hi,
Is the contents in /var/log/syslog and /var/adm/messages are same??
Regards (3 Replies)
Discussion started by: vks47
3 Replies
7. Solaris
Hi
I need to delete more than 3 million files from /var/spool/clientmqueue. When I give the following command to delete the files, I get the error
# pwd
/var/spool/clientmqueue
# rm -f *
/usr/bin/rm: arg list too long
Please tell me how can I delete the files (5 Replies)
Discussion started by: sb200
5 Replies
8. Linux
Hi All,
Can I delete the above file? It's big, about 1G. It's on a redhat ent 4 with ldap on it.
Is that safe to delete? It wasn't been used for already a month and it's in the backup storage.
Thanks for any comment you may add. (1 Reply)
Discussion started by: itik
1 Replies
9. Solaris
hi sirs
can u tell the difference between /var/log/syslogs and /var/adm/messages
in my working place i am having two servers.
in one servers messages file is empty and syslog file is going on increasing..
and in another servers message file is going on increasing but syslog file is... (2 Replies)
Discussion started by: tv.praveenkumar
2 Replies
10. UNIX for Dummies Questions & Answers
The file var/spool/mail/news has grown very large and takes up too much space. Can I delete this without any problem? (3 Replies)
Discussion started by: dennisheazle
3 Replies
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)