02-12-2012
What is "derive teh Next month" and "inLinux susse andnotin AIX." ?
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1. Shell Programming and Scripting
Hello
I want to get end date of the any month in unix . is there any function to do this.
we can get month from date command 'date +%b'
example:
If Feb month then last date is 28
if sep then last date 30. like this
thanks
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Hi,
I'm a newbie to unix and i'm loving every bit of it.
I need assistance in setting my date function in my script to "new month".
What I want to do is define the "newmonth" as the 1st of every month so my script can run by this time evry month through the year.
Can someone assist.
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Hello,
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Hi folks
month=`date +%m`gives current month
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5. Shell Programming and Scripting
Hi,
i unable to get the last month date in AIX.
current date - one month
Based on the forums tried but did not find the relevent information.
Any help grealy appriciated.
Thanks
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6. AIX
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7. Shell Programming and Scripting
I have requirment to get last date of previous month and the first date of previous 4th month:
Example:
Current date: 20130320 (yyyymmdd)
Last date of previous month: 20130228 (yyyymmdd)
First date of previous 4th month: 20121101 (yyyymmdd)
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Hi,
Is there a way to subtract a month or at least 30 days from an arbitrary or user inputted date without the GNU date?
Example:
please Input date: 2011-05-11
then the answer will be 2011-04-11
This code doesn't work:
$date -d "2011-05-11 - 1 month" "+%Y%m%d"
Thanks (7 Replies)
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9. AIX
As said in object, how can i obtain that?
In linux i use date -d "1 month" +"%m%Y".
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10. UNIX for Dummies Questions & Answers
Hello,
I am new to this forum so any assistance would help.
I am currently trying to develop a script that extract all data from a log file with has the previous day's date.
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LEARN ABOUT REDHAT
evp_bytestokey
EVP_BytesToKey(3) OpenSSL EVP_BytesToKey(3)
NAME
EVP_BytesToKey - password based encryption routine
SYNOPSIS
#include <openssl/evp.h>
int EVP_BytesToKey(const EVP_CIPHER *type,const EVP_MD *md,
const unsigned char *salt,
const unsigned char *data, int datal, int count,
unsigned char *key,unsigned char *iv);
DESCRIPTION
EVP_BytesToKey() derives a key and IV from various parameters. type is the cipher to derive the key and IV for. md is the message digest to
use. The salt paramter is used as a salt in the derivation: it should point to an 8 byte buffer or NULL if no salt is used. data is a buf-
fer containing datal bytes which is used to derive the keying data. count is the iteration count to use. The derived key and IV will be
written to key and iv respectively.
NOTES
A typical application of this function is to derive keying material for an encryption algorithm from a password in the data parameter.
Increasing the count parameter slows down the algorithm which makes it harder for an attacker to peform a brute force attack using a large
number of candidate passwords.
If the total key and IV length is less than the digest length and MD5 is used then the derivation algorithm is compatible with PKCS#5 v1.5
otherwise a non standard extension is used to derive the extra data.
Newer applications should use more standard algorithms such as PKCS#5 v2.0 for key derivation.
KEY DERIVATION ALGORITHM
The key and IV is derived by concatenating D_1, D_2, etc until enough data is available for the key and IV. D_i is defined as:
D_i = HASH^count(D_(i-1) || data || salt)
where || denotes concatentaion, D_0 is empty, HASH is the digest algorithm in use, HASH^1(data) is simply HASH(data), HASH^2(data) is
HASH(HASH(data)) and so on.
The initial bytes are used for the key and the subsequent bytes for the IV.
RETURN VALUES
EVP_BytesToKey() returns the size of the derived key in bytes.
SEE ALSO
evp(3), rand(3), EVP_EncryptInit(3),
HISTORY
0.9.7a 2001-12-02 EVP_BytesToKey(3)