01-07-2013
10 More Discussions You Might Find Interesting
1. Programming
Hi,
I am new to C and have a little problem.
I am not planning to be a C expert, but this would be nice to understand.
The problem is that a 'system' call prints it output to stdout, when I do not expect this.
This is the program:
trial.c
#include <ctype.h>
#include <unistd.h>... (5 Replies)
Discussion started by: ejdv
5 Replies
2. Shell Programming and Scripting
Hi,
I am presently stuck in a csv file.
INPUT CSV
baseball,NULL,8798765,Most played
baseball,NULL,8928192,Most played
baseball,NULL,5678945,Most played
cricket,NOTNULL,125782,Usually played
cricket,NOTNULL,678921,Usually played
EXPECTED OUTPUT CSV
... (7 Replies)
Discussion started by: scripter12
7 Replies
3. Shell Programming and Scripting
Hi All,
I am in middle of one script. I want output in the form of xls file.
There are 4 fields - user name, email Id, full name, date of birth. I want these details to get in seperate columns.
But, i am getting it in the single cell and as like a paragraph.:mad:
Please suggest me some... (8 Replies)
Discussion started by: Agupte
8 Replies
4. Shell Programming and Scripting
I've been working on improving my awk, and the next thing I want to learn is to properly use functions (I understand functions in shell and python). I have the following code which includes how I did this without functions before, and two attempts I've made to do it with functions:
function... (3 Replies)
Discussion started by: DeCoTwc
3 Replies
5. Shell Programming and Scripting
lyang001@lyang001-OptiPlex-9010:~$ service --status-all |grep dbus
acpid
acpi-support
alsa-restore
alsa-store
anacron
apport
atd
avahi-daemon
bluetooth
cgroup-lite
console-setup
cron
cups
dbus
dmesg
dns-clean
failsafe-x
... (1 Reply)
Discussion started by: yanglei_fage
1 Replies
6. Shell Programming and Scripting
Good Moring,
I am currently reading about awk in a manual and following the examples using the oratab file.
My system is SOLARIS 10
I think I am getting strange behavior judging by what the book says to do and what I am getting with my little program.
Here is my program:
grep -v oratab |... (4 Replies)
Discussion started by: bdby
4 Replies
7. Shell Programming and Scripting
#cat /tmp/input
old_array old_dev new_dev new_array
0577 008AB 01744 0125
0577 008AC 01745 0125
0577 008AD 005C8 0125
0577 008AE 005C9 0125
0577 008AF 005CA 0125
0577 008B0 005CB 0125
0577 008B1 005CC 0125
cat test.sh
#!/bin/ksh... (4 Replies)
Discussion started by: mbak
4 Replies
8. Shell Programming and Scripting
Hello,
I am trying to print out the first string matching query with grep and I need your help.
My scenario:
Database
John F
4433 Street No 88 CA
Elisabeth Taylor
7733 Street No 26 ON
Jack Nicholson
0133 Green Park No 34 AR
John F 2
9399 Southpark No 02D UT
test.sh... (6 Replies)
Discussion started by: baris35
6 Replies
9. Shell Programming and Scripting
Hello,
I am practising awk and decided to compare two columns and print the result of the comparison as third column
i/p data
c1,c2,c3
1,a,b
1,b,b
i am trying to compare the last two columns and if they match I am trying to print match else mismatch(Ideally i want that as a last column... (5 Replies)
Discussion started by: mkathi
5 Replies
10. Shell Programming and Scripting
Hi Gurus,
I run command grep ABC file1 > file2 against below file. I got all ABC_xxx in one line in file2. I expect to get multiple lines in file2. If I print result in screen, the result is expected.
thanks in advance
My os is SunOS 5.10 Generic_150400-64 sun4v sparc sun4v
ABC_123
XXXXX... (2 Replies)
Discussion started by: green_k
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)