Hi a am writing a C Programe on Vi Editor (File Handelling),and i am compiling it using fcc but it not compiling ,Even Vi not saving my file.Tell me how can i do that.One More Thing I want to know that ,Is their any subsitute of conio.h. (3 Replies)
when the user selects an option ou from the list how is it possible to let the script detect the option and carry out the appropriate action...i noe its suppose to use the for or if loop..but how ?? (3 Replies)
Hello,
I've posted this in an X group, but I thought one of you might be able to help.
I'm a novice programmer and I'm trying to write an X program in which pressing a button will launch another program. I know the syntax is something like "(Widget) -command {exec /usr/X11R6/bin/xcalc &}"... (5 Replies)
on of the question that I have is that in class . We were asked this question
**What command would you use to list the last modification time of
all files in /tmp whose filenames end in exactly two digits?
I know that we need to to ls /tmp/ ??.... but I did not know how to find that last... (2 Replies)
I have a file, not really a csv, but containing delineated data just the same. Lets call that file "raw_data.txt". It contains data in the format of company name:fein number like this:
first company name:123456789
second company name:987654321
what i need to do is read this file, apply... (11 Replies)
. Make a new copy of mars.txt called marsx. What happens if you give the following commands when the files bio and marsx both already exist? Don't guess, try it!
a) cp bio marsx
b) mv bio marsx (2 Replies)
hi
i want to generate SHA1 hash of string in Linux (atmark) and downloaded the XYSSL-0.9 version code for the same.i have the algorithm which takes file as argument and returns hash of file . And of same file while I generated the key using online tools then it doesn't match with my compiled... (4 Replies)
Hi guys!
Me again! ...
I'm trying to build (on MacOS directly) a bash script that will help me verify a SHA1 digest (to verify downloads and so on and so forth).
So first off, here's my version of BASH under OSX:
bash-4.4$
And here's my version of Sierra (macOS):
10.12.3 (16D32)
... (2 Replies)
Discussion started by: Ardzii
2 Replies
LEARN ABOUT DEBIAN
bup-random
bup-random(1) General Commands Manual bup-random(1)NAME
bup-random - generate a stream of random output
SYNOPSIS
bup random [-S seed] [-fv]
DESCRIPTION
bup random produces a stream of pseudorandom output bytes to stdout. Note: the bytes are not generated using a cryptographic algorithm and
should never be used for security.
Note that the stream of random bytes will be identical every time bup random is run, unless you provide a different seed value. This is
intentional: the purpose of this program is to be able to run repeatable tests on large amounts of data, so we want identical data every
time.
bup random generates about 240 megabytes per second on a modern test system (Intel Core2), which is faster than you could achieve by read-
ing data from most disks. Thus, it can be helpful when running microbenchmarks.
OPTIONS
the number of bytes of data to generate.
Can be used with the suffices k, M, or G to indicate kilobytes, megabytes, or gigabytes, respectively.
-S, --seed=seed
use the given value to seed the pseudorandom number generator. The generated output stream will be identical for every stream
seeded with the same value. The default seed is 1. A seed value of 0 is equivalent to 1.
-f, --force
generate output even if stdout is a tty. (Generating random data to a tty is generally considered ill-advised, but you can do if
you really want.)
-v, --verbose
print a progress message showing the number of bytes that has been output so far.
EXAMPLES
$ bup random 1k | sha1sum
2108c55d0a2687c8dacf9192677c58437a55db71 -
$ bup random -S1 1k | sha1sum
2108c55d0a2687c8dacf9192677c58437a55db71 -
$ bup random -S2 1k | sha1sum
f71acb90e135d98dad7efc136e8d2cc30573e71a -
$ time bup random 1G >/dev/null
Random: 1024 Mbytes, done.
real 0m4.261s
user 0m4.048s
sys 0m0.172s
$ bup random 1G | bup split -t --bench
Random: 1024 Mbytes, done.
bup: 1048576.00kbytes in 18.59 secs = 56417.78 kbytes/sec
1092599b9c7b2909652ef1e6edac0796bfbfc573
BUP
Part of the bup(1) suite.
AUTHORS
Avery Pennarun <apenwarr@gmail.com>.
Bup unknown-bup-random(1)