I have a file cleanlogs_imgp01_files which has the contents as follows,
And when i execute this, I get the following output.
But the /opt/elf/logs have all permissions. The log files resides inside the directory also has execute permission.
Can anyone explain why this error is occurring?
Note - Only cold_log's are present only in the Logs directory, so for other logs not found cannot be looked in
Moderator's Comments:
Please use CODE TAGS and a descriptive subject for your threads
Hi All,
I am using Korn Shell HP UNIX and i am writing my scripts with filename extension as ksh or sh ..
I want to know what is the difference if i am giving ksh and sh
Other thing when we execute the shell script either we make it as executable and run directly else we give '.' or 'sh'... (2 Replies)
Hi ,
I need your help to know the exact operation of this following code ..
cat file1 | ux2dos | tr -d ''>>file2
file1 contains only one line : "DTS-PO\SPECTRUM WO 56"
the data contains a META CHAR "\" .. look at the above line.
But , The file2 output contains :... (7 Replies)
I just now read the doc in https://www.unix.com/tips-tutorials/35535-understanding-unix-timekeeping.html
Need clarification that half of the files in any directory is shown in below pattern in which time stamp pattern is highlighted
And half of the files are shown in different pattern... (2 Replies)
:confused:
Hi All,
i am new to unix....so i am not sure whether i am asking the related question with our forum..
My question .....Can anyone explain me about the CGI script
is it something related to Unix or Linux or some other language.
Thanks in advance
Sha (1 Reply)
Hi, I have a file which contains below info :
$ cat test_file
kenny
denny
kite
I want to get all th file names which starts with k. Hence i used below command but the result was not up to the mark :
$ grep 'k*' test_file
kenny
denny
kite
Can someone please explain me why this is... (1 Reply)
Hi,
I am creating two shell scripts for Database backup and the output has to be routed to nohup.out file.
We will also be running the scripts in the background as
nohup.out <script_name> &
Do I manually need to create a nohup.out file in the directory from where the scripts are going... (1 Reply)
crw-rw-rw- 1 root root 1, 5 May 6 1998 /dev/zero
brw----rw- 1 root floppy 2, 28 May 6 1998 /dev/fd0H1440
In the above permission what is above C and B indicates?
Thanks (1 Reply)
Hi,
I want to use the "SU" command in script it is asking me to enter the password manually.
pleas the say the syntax of su command in single line that includes username/password. :) (3 Replies)
Discussion started by: vigneshwaran007
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)