07-15-2017
Is this Solaris? Are the two servers are of same *nix flavors?
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1. Shell Programming and Scripting
Hi
Here i have a script a
#!/usr/bin/env tclsh
puts "Hello World!"
set filename "./BesRun.sh"
> out.txt
exit
I am trying to redirect the output of the "./BesRun.sh" to out.txt,but it is not happening can anyone let me know (2 Replies)
Discussion started by: nathgopi214
2 Replies
2. Shell Programming and Scripting
Hi,
I'm new to ksh - unix platform. I'm writing a small script which will search my current directory and will search for file names which it takes input from the users.
Here is the code I'm having.
1 #!/bin/ksh
2 echo "enter a file name to be searched in the current dir : "
3 read... (1 Reply)
Discussion started by: avik
1 Replies
3. Shell Programming and Scripting
can any one pls explain the meaning of
exec 1<&5 ?? its urgent (2 Replies)
Discussion started by: santosh1234
2 Replies
4. Shell Programming and Scripting
Hi,
I want to write the shell script to change multple file name (the file name is get from DB)
e.g. cp db1.txt file1_new.txt
cp db2.txt file2_new.txt
cp db3.txt file3_new.txt
I have write the script like this:
VAR=`sqlplus -s $LOGON @<<ENDOFTEXT
set termout off
... (0 Replies)
Discussion started by: jackyntk
0 Replies
5. Shell Programming and Scripting
How can I use the exec command to log my korn shell session to the screen and the log file?
Currently I have this command:
$exec 1> ${LOG} 2>&1
This logs the output to the log file only. I want it to go to the screen also. Is this possible with this command?
thanks. (10 Replies)
Discussion started by: djehresmann
10 Replies
6. Shell Programming and Scripting
Hello Experts,
I am on Solaris 10
Due to some limitations in one of the vendor software, I am forced to output the command to exec and then run it from there.
For example..
$(echo "/usr/bin/cp a.dat b.dat") # This works
However,
$(echo "/usr/bin/cat a.dat > c.dat") # This does not... (8 Replies)
Discussion started by: Gokul Kumar G
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7. UNIX for Dummies Questions & Answers
Hi can some one explain the following command , It would really help if some can really elloborate on what is happening out here
export PATH | exec /bin/sh ./auto_approve :q
P.S: This is the first time i am using exec ,so an elloboration what does it do and what is the use of the :q will be... (1 Reply)
Discussion started by: Sri3001
1 Replies
8. Shell Programming and Scripting
Hi,
I have the following lines in a script :
.
.
exec < some_file
.
.
.
I have very little idea about exec command. I would like to know what this does and what will happen if the file some_file does not exist. Specifically, I would like to know whether the lines following this... (5 Replies)
Discussion started by: elixir_sinari
5 Replies
9. Shell Programming and Scripting
Example script:
find mydir -type f -exec echo {}>aaa \; -exec echo {}>bbb \;The two paths go the the bbb file, while there should be one of them on each file. How should I do it to get it working? (2 Replies)
Discussion started by: Tribe
2 Replies
10. Shell Programming and Scripting
Hello.
From a script, a command for a test is use :
find /home/user_install -maxdepth 1 -type f -newer /tmp/000_skel_file_deb ! -newer /tmp/000_skel_file_end -name '.bashrc' -o -name '.profile' -o -name '.gtkrc-2.0' -o -name '.i18n' -o -name '.inputrc'
Tha command... (3 Replies)
Discussion started by: jcdole
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)