10-14-2008
So, if I have just a single server with 8 processors, would I be able to execute such an algorithm? I am a little new to these things so I apologize if the question is silly. I was just wondering if there is an algorithm to just split up the original file and then process it bit by bit...
And also, what is the main problem encountered if I create a hashmap? I mean, if there are only a few unique values, where would the problem come from in the first place?
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
I have a file like this:
Some_String_Here 123 123 123 321 321 321 3432 3221 557 886 321 321
I would like to find only the unique values in the files and get the following output:
Some_String_Here 123 321 3432 3221 557 886
I am trying to get this done using awk. Can someone please... (5 Replies)
Discussion started by: Legend986
5 Replies
2. UNIX Desktop Questions & Answers
After giving
grep -A4 "feature 1," <file name>
I have extracted the following text
feature 1,
subfeat 2,
type 1,
subtype 5,
dump '30352f30312f323030392031313a33303a3337'H -- "05/01/2009 11:30:37" --
--
... (1 Reply)
Discussion started by: shivi707
1 Replies
3. UNIX for Dummies Questions & Answers
Hello all,
I have a file with following sample data
2009-08-26 05:32:01.65 spid5 Process ID 86:214 owns resources that are blocking processes on Scheduler 0.
2009-08-26 05:32:01.65 spid5 Process ID 86:214 owns resources that are blocking processes on Scheduler 0.
2009-08-26... (5 Replies)
Discussion started by: simonsimon
5 Replies
4. Shell Programming and Scripting
Hi
I have the following info in a file -
<Cell id="25D"/>
<Cell id="26A"/>
<Cell id="26B"/>
<Cell id="26C"/>
<Cell id="27A"/>
<Cell id="27B"/>
<Cell id="27C"/>
<Cell id="28A"/>
I would like to know how would you go about counting all... (4 Replies)
Discussion started by: Prega
4 Replies
5. Shell Programming and Scripting
I need to take the second column of a .csv file and count the number of instances of each unique value in that same second column. I'd like the output to be value,count sorted by most instances. Thanks for any guidance!
Data example:
317476,317756,0
816063,318861,0
313123,319091,0... (4 Replies)
Discussion started by: batcho
4 Replies
6. Shell Programming and Scripting
Hello,
I need some sort of way to extract every date contained in a file, and count how many of those dates there are.
Here are the specifics:
The date format I'm looking for is mm/dd/yyyy
I only need to look after line 45 in the file (that's where the data begins)
The columns of... (2 Replies)
Discussion started by: ronan1219
2 Replies
7. Linux
cat sample.csv
ID,Name,no
1,AAA,1
2,BBB,1
3,AAA,1
4,BBB,1
cut -d',' -f2 sample.csv | sort | uniq
this gives only the 2nd column values
Name
AAA
BBB
How to I get all the columns of CSV along with this? (1 Reply)
Discussion started by: sanvel
1 Replies
8. Shell Programming and Scripting
Hi Folks,
I have the below feed file named abc1.txt in which you can see there is a title and below is the respective values in the rows and it is completely pipe delimited file ,.
... (4 Replies)
Discussion started by: punpun66
4 Replies
9. Shell Programming and Scripting
Hello Everyone!
I have updated the first post so that my intentions are easier to understand, and also attached sample files (post #18).
I have over 500 text files in a directory. Over 1 GB of data. The data in those files is organised in lines:
My intention is to return one line per... (23 Replies)
Discussion started by: clippertm
23 Replies
10. Shell Programming and Scripting
Hi,
I have a huge unsorted text file. We wanted to identify the unique field values in a line and consider those fields as a primary key for a table in upstream system.
Basically, the process or script should fetch the values from each line that are unique compared to the rest of the lines in... (13 Replies)
Discussion started by: manikandan23
13 Replies
LEARN ABOUT OSX
crypt_unix
crypt_unix(5) Standards, Environments, and Macros crypt_unix(5)
NAME
crypt_unix - traditional UNIX crypt algorithm
DESCRIPTION
The crypt_unix algorithm is the traditional UNIX crypt algorithm. It is not considered sufficiently secure for current systems and is pro-
vided for backwards compatibility. The crypt_sunmd5(5), crypt_bsdmd5(5), or crypt_bsdbf(5) algorithm should be used instead.
The algorithm identifier for policy.conf(4) is __unix__. There is no entry in crypt.conf(4) for this algorithm.
The crypt_unix algorithm is internal to libc and provides the string encoding function used by crypt(3C) when the first character of the
salt is not a "$".
This algorithm is based on a one-way encryption algorithm with variations intended (among other things) to frustrate use of hardware imple-
mentations of a key search. Only the first eight characters of the key passed to crypt() are used with this algorithm; the rest are
silently ignored. The salt is a two-character string chosen from the set [a-zA-Z0-9./]. This string is used to perturb the hashing algo-
rithm in one of 4096 different ways.
The maximum password length for crypt_unix is 8 characters.
USAGE
The return value of the crypt_unix algorithm might not be portable among standard-conforming systems. See standards(5).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |Safe |
+-----------------------------+-----------------------------+
SEE ALSO
passwd(1), crypt(3C), crypt_genhash_impl(3C), crypt_gensalt(3C), crypt_gensalt_impl(3C), getpassphrase(3C), crypt.conf(4), passwd(4), pol-
icy.conf(4), attributes(5), crypt_bsdbf(5), crypt_bsdmd5(5), crypt_sunmd5(5), standards(5)
SunOS 5.10 6 Aug 2003 crypt_unix(5)