It has been quite a while since I used UNIX. I am developing
a security system and I was wondering if UNIX and/or LINUX
user ID's are case-sensitive.
i.e. can user 'daveb' and 'Daveb' exist on the same system with
completely different authorizations/priorities, etc.? (3 Replies)
Hello users,
I have a question ?
I was just wondering whether the hostname on unix systems are case sensitive.
For example in the system which I work.
ping TestHost and ping testhost gives me the same output i.e I get the reply from the remote host
Is this applicable for all... (3 Replies)
In a Case switch, how to ignore case sensitive in the test:
e.g.
case "$field" in
"TEST) action1;;
*) action2;;
esac
How to go in action1 in case of $field = TEST , or Test , or test or .... without enumerating all possibilities...
Thanks,... (1 Reply)
I was instructed by my superior to change kernel parameter, adding up this parameter to /etc/system. Server is Solaris 10 on SPARC.
Tcp_conn_req_max_q 1024In my Google search, all I know that the sentence is in small case (tcp_conn_req_max_q) but as you can see above, instruction given... (4 Replies)
Is there a way for me to take a parameter then store it in a variable and use its value as non case sensitive?
Ex.
Lets say i have a parameter which contains "Hey".
Then im gonna store it to GR using GR=$1.
CL=/install/$GR.g
How can i make GR non case sensitive so that the... (1 Reply)
Can someone please tell me why iname is being case sensitive with this?
$ find /media -iname *load* 2>/dev/null
/media/Part 2/stuff/Downloads
/media/Part 1/Application Data/Mozilla/Firefox/Profiles/wnul4kj4.irc/chatzilla/downloads
/media/Part 1/Bob_5-22-2010/Application... (5 Replies)
Hello all,
This is my first thread so please let me know if I am doing anything wrong or not following etiquette.
I have an input file that looks like
123a12345
345a12445
245a66792
245A12345
215A23566
and I want output files that look like
a.txt
123a12345
345a12445
245a66792
... (7 Replies)
Hi All,
select app from the menu:
ABC
DEF
GHI
JKL
ALL # ALL will select all the apps in the menu
echo "Enter your option"
read option;
if
then
<execute the below command>
elif # option is the 1 selection from menu...not ALL
<execute the below command>
else (14 Replies)
Hi, users file contains below names i have a requirement to keep only one case sensitive user. For e.g if user name is "aaa" then only aaa should be there in the file and other matching users(AAA,aaA) should be deleted.
Tried multiple options but no luck can you please help.
aaa
abc
AAA... (2 Replies)
Discussion started by: Satyak
2 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)