01-30-2013
Which OS do you work on? Linux "stat" knows the "-c" option as per the man page, but that does not necessarily have to be the case for any other UNIXoid derivate out there.
I hope this helps.
bakunin
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Good morning,
I would like to find all files of a certain type and display their name as well as their modification date.
In order to do this, I would do the following:
find ./ -name *.csv | ????????
My question: what to put after the pipe instead of the question marks? Is there a basic... (5 Replies)
Discussion started by: scampsd
5 Replies
2. UNIX for Dummies Questions & Answers
Hi
I'd like to know if is it possible to find files given a certain modification date (say, 01-05-2006, that's 1st of May 2006)
I can calculate the days backward:
find / -ctime 23
but I wish to search by exact modification day
Thanks (5 Replies)
Discussion started by: slink
5 Replies
3. UNIX for Dummies Questions & Answers
Hi i have a ques in Shell scripting:
ques: accept a filename as a command line argument. Validate the input and display the last modification date for that file.
Help pls. (4 Replies)
Discussion started by: onlyc
4 Replies
4. Shell Programming and Scripting
hi. I need help my programing friends :p
I need to list all the files with a certain name (for example FileName) by last modification date but only the one with the last date. If there are two files with the same name and same modification date it should print the both.
For example in this set... (6 Replies)
Discussion started by: KitFisto
6 Replies
5. Homework & Coursework Questions
I realize this is basic and probably obvious, but I'm pulling my hair out. I'm guessing this is just some flag on the file command or somesuch, but I can't find it. Help me get unstuck please?
EDIT: I guess what I'm asking is once I've got the ls -l output for a file, what command do I use to... (3 Replies)
Discussion started by: Timespike
3 Replies
6. UNIX for Dummies Questions & Answers
Hi, I'm executing a script to check if a file has been modified on a shared folder.
I use this to start another script every time the file has been modified.
To do this I use the 'ls' command to get the last modification date of the file.
My problem is that the computer hosting the shared... (5 Replies)
Discussion started by: Peuj
5 Replies
7. OS X (Apple)
How do i get the file modification date in number format (yyyy mm dd hh mm ss)
i used
ls -l pathname
but month is still in text "Aug" and year and time is not allways shown. time is show if it is in this year. and year is shown if it is before this year.
what do i need to get... (7 Replies)
Discussion started by: rvdokkum
7 Replies
8. Shell Programming and Scripting
Hello all !
I have a piece of code that generates the date of one day ago:
/usr/bin/gdate --date='1 day ago' | awk '{print $2 " " $3}'
Nov 3
I want the output to be in the form :
Nov 03
What other operation should I do for that ?
Help (2 Replies)
Discussion started by: Junaid Subhani
2 Replies
9. Programming
First, oh great Unix gurus, forgive if this is a stupid question.
Unix/Linux is not my main thing but I have been programming in C/C++ for many years. I will do my best to be specific.
I have a program in C/C++ that needs to modify the time of a given file. Currently I do this using utime()... (5 Replies)
Discussion started by: Pug
5 Replies
10. Shell Programming and Scripting
SunOS -s 5.10 Generic_147440-04 sun4u sparc SUNW,SPARC-Enterprise
Hi,
In a folder, there are files. I have a script which reads the current date and subtract the modification date of each file.
How do I achieve this?
Regards,
Joe (2 Replies)
Discussion started by: roshanbi
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)