Hi,
I am a beginner. I need an example of using DB2 Load Utility in Shell script.
I appreciate if anyone could help me about it.
Thanks,
Paris (0 Replies)
hi all
need your help.
I am wrting a script that will load data into the table.
then on another load will append the data into the existing table.
Regards
Ankit (1 Reply)
Hi....can you guys help me out in this script??
Below is a portion text file and it contains these:
GEF001 000093625 MKL002510 000001 000000 000000 000000 000000 000000 000001
GEF001 000093625 MKL003604 000001 000000 000000 000000 000000 000000 000001
GEF001 000093625 MKL005675 000001... (1 Reply)
Hello to everyone,
This is my first that I use any group in order to find a reply to my question.
I would really like your help!!!
Do you know how can I create my own .profile file in unix (not edit the existing one) and how can I load it when i open a new bash? I would like those settings... (1 Reply)
Hi,
I have a piece of shell script which will connect to mysql database and execute a load statement(which will load datas in a file to the database table).The code is working and the data is in the tables.
Now my requirement is, i need to grab the output from the load statement... (4 Replies)
I need help as to how to write a script in Unix for the following:
We have 3 servers;
The mainframe will FTP them to a folder. In that folder we will need the script to look and see if the specific file name is there and load it to the correct table.
Can anyone pls help me out with... (2 Replies)
Hello everyone,
I am new to shell scripting/ loading data into a database.
I want to load data into Oracle database using SQL loader. Can some one please explain why do we need unix shell script to load the data into the database? Also can someone please explain what has to be in that script?... (5 Replies)
`/proc/loadavg` give me three indicators of how much work
the system has done during the last 1, 5 & 15 minutes.
How can i get a list of load averages
that each averaged over the last minute for 10 minutes? (2 Replies)
Hi,
I'm new to Linux. I'm working on a database, and need to load data in a database table (which I already created) using shell script.
The table has two columns - Acct_number (not nullable) and date (timestamp).
I'm not able to write a shell script for that. Can any one help me?
... (3 Replies)
Hi,
I need to balance the load to be processed by the system using shell script.
The scenario is like below:
Suppose there are some files in a directory:
-rw-rw-r-- 1 usr usrgrp 456432306 Oct 23 07:53 abc_queue_q1
-rw-rw-r-- 1 usr usrgrp 4123934 Oct 23 07:53... (1 Reply)
Discussion started by: vsachan
1 Replies
LEARN ABOUT REDHAT
urandom
RANDOM(4) Linux Programmer's Manual RANDOM(4)NAME
random, urandom - kernel random number source devices
DESCRIPTION
The character special files /dev/random and /dev/urandom (present since Linux 1.3.30) provide an interface to the kernel's random number
generator. File /dev/random has major device number 1 and minor device number 8. File /dev/urandom has major device number 1 and minor
device number 9.
The random number generator gathers environmental noise from device drivers and other sources into an entropy pool. The generator also
keeps an estimate of the number of bit of the noise in the entropy pool. From this entropy pool random numbers are created.
When read, the /dev/random device will only return random bytes within the estimated number of bits of noise in the entropy pool.
/dev/random should be suitable for uses that need very high quality randomness such as one-time pad or key generation. When the entropy
pool is empty, reads to /dev/random will block until additional environmental noise is gathered.
When read, /dev/urandom device will return as many bytes as are requested. As a result, if there is not sufficient entropy in the entropy
pool, the returned values are theoretically vulnerable to a cryptographic attack on the algorithms used by the driver. Knowledge of how to
do this is not available in the current non-classified literature, but it is theoretically possible that such an attack may exist. If this
is a concern in your application, use /dev/random instead.
CONFIGURING
If your system does not have /dev/random and /dev/urandom created already, they can be created with the following commands:
mknod -m 644 /dev/random c 1 8
mknod -m 644 /dev/urandom c 1 9
chown root:root /dev/random /dev/urandom
When a Linux system starts up without much operator interaction, the entropy pool may be in a fairly predictable state. This reduces the
actual amount of noise in the entropy pool below the estimate. In order to counteract this effect, it helps to carry entropy pool informa-
tion across shut-downs and start-ups. To do this, add the following lines to an appropriate script which is run during the Linux system
start-up sequence:
echo "Initializing kernel random number generator..."
# Initialize kernel random number generator with random seed
# from last shut-down (or start-up) to this start-up. Load and
# then save 512 bytes, which is the size of the entropy pool.
if [ -f /var/random-seed ]; then
cat /var/random-seed >/dev/urandom
fi
dd if=/dev/urandom of=/var/random-seed count=1
Also, add the following lines in an appropriate script which is run during the Linux system shutdown:
# Carry a random seed from shut-down to start-up for the random
# number generator. Save 512 bytes, which is the size of the
# random number generator's entropy pool.
echo "Saving random seed..."
dd if=/dev/urandom of=/var/random-seed count=1
FILES
/dev/random
/dev/urandom
AUTHOR
The kernel's random number generator was written by Theodore Ts'o (tytso@athena.mit.edu).
SEE ALSO
mknod (1)
RFC 1750, "Randomness Recommendations for Security"
Linux 1997-08-01 RANDOM(4)