How to generate a random integer with specific range(for example, from 1 to 1000)?
Also, how to convert a floating point number into a integer? (2 Replies)
Hello All...
Can someone help me generate a random password which will be 7 characters long which contains alpha-numeric characters using shell script.
I am looking to store the output of the script that generates the password to a variable within a script and use it as the password.
... (5 Replies)
I need a function to generate a random alphanumeric password in C code. It needs to be between 6-8 characters and follow the following rules:
Reject if same char appears # time: 4 or more
Reject if same char appears consecutively: 3 or more
I have the following random password working for... (2 Replies)
I saw this formula to generate random number between two specified values in shell script.the following.
$(((RANDOM%(max-min+divisibleBy))/divisibleBy*divisibleBy+min))
Give a example in book.
Generate random number between 6 and 30.like this.
$(((RANDOM%30/3+1)*3))
But I have a... (1 Reply)
hi guys,
I am writing a c program that generates a two dimensional array to make matrix and a vector of random numbers and perform multiplication. I can't figure out whats wrong with my code. It generates a matrix of random numbers but all the numbers in the vector array is same and so is the... (2 Replies)
Dear all,
I have a question. I have a txt file say 4000 rows X 1800 Column. I 'd like to creat a new column as the first column which is a column of random numbers (n=4000)
thanks a lot!
Lin (2 Replies)
i want to generate a random number through a script, and even if anyone reads the script, they wont be able to figure out what the random number is. only the person who setup the script would know it.
something like this could work: random
the full thread is here:
... (13 Replies)
Hi,
Is anybody experience generate a pair of random number by using awk command?
I wanna to generate a pair of random number (range from 1 to 4124) and repeats it 416 times.
Desired output
2 326
123 1256
341 14
3245 645
.
.
.
I did write the below command:
awk... (5 Replies)
Hi,
In our HP-UX B.11.11. I could not find dev/urandom and dev/random
Are all pseudo-devices implemented as device drivers, or in need to run /configure some package to install the package to have dev/urandom.
Please help (4 Replies)
Discussion started by: rashi
4 Replies
LEARN ABOUT BSD
fifo
fifo(3tcl)fifo(3tcl)NAME
fifo - Create and manipulate u-turn fifo channels
SYNOPSIS
package require Tcl
package require memchan
fifo
DESCRIPTION
fifo creates a stream-oriented in-memory channel and returns its handle. There is no restriction on the ultimate size of the channel, it
will always grow as much as is necessary to accommodate the data written into it.
In contrast to the channels generated by memchan a channel created here effectively represents an U-turn. All data written into it
can be read out, but only in the same order. This also means that a fifo channel is not seekable.
The channels created here can be transferred between interpreters in the same thread and between threads, but only as a whole. It is
not possible to use them to create a bi- or unidirectional connection between two interpreters.
Memory channels created by fifo provide two read-only options which can be queried via the standard fconfigure command. These are
-length
The value of this option is the number of bytes currently stored in the queried memory channel.
-allocated
The value of this option is the number of bytes currently allocated by the queried memory channel. This number is at least as big as
the value of -length.
As the channels generated by fifo grow as necessary they are always writable. This means that a writable fileevent-handler will fire con-
tinuously.
The channels are also readable if they contain more than zero bytes. Under this conditions a readable fileevent-handler will fire continu-
ously.
NOTES
One possible application of memory channels created by memchan or fifo is as temporary storage device to collect data coming in over a pipe
or a socket. If part of the processing of the incoming data is to read and process header bytes or similar fifo are easier to use as they
do not require seeking back and forth to switch between the assimilation of headers at the beginning and writing new data at the end.
SEE ALSO
fifo2, memchan, null
KEYWORDS
channel, fifo, i/o, in-memory channel, memchan, stream
COPYRIGHT
Copyright (c) 1996-2003 Andreas Kupries <andreas_kupries@users.sourceforge.net>
Memory channels 2.1 fifo(3tcl)