|
|
Sponsored Content
Top Forums
Shell Programming and Scripting
Test command in UNIX
Post 302872301 by kmanivan82 on Friday 8th of November 2013 05:39:36 AM
11-08-2013
|
|
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
I just started studying AI at the university of amsterdam and I heard there is some basic UNIX test which is available online. Well, if any of you knows a link to that test I would truely appreciate it.
Thanks a lot,
L (1 Reply)
Discussion started by: L.A. BOSS
1 Replies
2. Shell Programming and Scripting
I have been looking into searching various files to display output.
The search criteria will be a month and year to output various numbers in the files.
is there any way to do this with the TEST function or would it have to be another way? (4 Replies)
Discussion started by: amatuer_lee_3
4 Replies
3. Shell Programming and Scripting
Plese help me on the below query.
for j in *.20071231* *.ctl *.dat
do
(
if then
cp "$base/*.*" "$base1"
fi
)
done
My requirement is for all files that has extension *.20071231* *.ctl *.dat
should be copied to another folder.
But those with caaa.20071231.log... (7 Replies)
Discussion started by: sussane
7 Replies
4. Programming
I'm very new to C and could use a little help.
I'm testing to make sure the command is running as it's proper name, if not then fail.
if (strcmp(argv, "xinit") != 0) {
fprintf(stdout, "name = %s length = %d\n",argv,l);
usage(0);
}
This works if the command is... (3 Replies)
Discussion started by: nck
3 Replies
5. UNIX for Dummies Questions & Answers
Hello, i have a script which checks if the user entered 8 numeric characters in the form of YYYYMMDD (birth date). If the user entered any non numeric characters, an error will be displayed:
# Check to see if the 8 characters are all numbers
# If not show error essage
# And prompt user... (4 Replies)
Discussion started by: netmaster
4 Replies
6. Shell Programming and Scripting
This is the code:
while test 1 -eq 1
do
read a
$a
if test $a = stop
then
break
fi
done
I read a command on every loop an execute it.
I check if the string equals the word stop to end the loop,but it say that I gave too many arguments to test.
For example echo hello.
Now the... (1 Reply)
Discussion started by: Max89
1 Replies
7. Shell Programming and Scripting
How to check weather a string is like test* or test* ot *test* in if condition (5 Replies)
Discussion started by: johnjerome
5 Replies
8. Shell Programming and Scripting
Hello,
I need help with a test command.
Here is what I am trying to do :
I've got an interactive script that check if configuration files exist on 2 different directories, then all configuration files are print on screen by a short name.
My problem is when you type a "wrong name" or... (12 Replies)
Discussion started by: Aswex
12 Replies
9. Shell Programming and Scripting
Hello all,
working on Solaris 10 in ksh.
Basicly, in my function, i'm trying to test that all my unix cmd's are true (exit status 0) else you flag the rcControlRule to 1 without going into spagetti mode code testing every $? in a if statement.
The mdb is probably a little tricky cause it... (3 Replies)
Discussion started by: maverick72
3 Replies
10. UNIX for Beginners Questions & Answers
I want to xheck if a file exists that uses wildcards as only the partial filename is known using the test Command, and when it exists then output just the number of lines in the file... do not include the filename. Then this output, is it captured by the CommandOutput or the ReturnValue as I want... (2 Replies)
Discussion started by: dsinco
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)