There are a number of commonly-available utilities to do this. Here is a demonstration of two:
producing:
You may need to install these from your distribution repository. See man pages for details.
on my desktop i am using the kde rotating desktop image option. this rotates images randomly every half hour. now, i would like to write an html file which will have an inline frame with some text, maybe system messages, or my friends live journal thati read alot, or unix.com! however, i dont want... (1 Reply)
Hi,
From some time, we have noticed that our ascii files have started corrupting due to the presence of some random control characters (^@, ^M, ^H, ^D). The characters appear randomly on any file after the process that creates the file finishes. If we rerun the process, the files re creates... (0 Replies)
I want to take the below data, and have it output to file only the STMC#/(IP address) and the "there are X number of updates to install" lines for each machine. I know it's easy, but Im a beginner in BASH stuff, my solution would probably take way too many lines to do something easy.Thanks!
... (5 Replies)
Hi there, I have a text file with several colums separated by "|;#" I need to search the file extracting all columns starting with the value of "1" or "2" saving in a separate file just the first 7 columns of each row maching the criteria, with replacement of the saparators in the nearly created... (4 Replies)
i have a file in following format
1 32 3
4 6 4
4 45 1
45 4 61
54 66 4
5 65 51
56 65 1
12 32 85
now here the total number of lines are 8(they vary each time)
Now i want to select only those lines in which the values... (6 Replies)
What I have are two text files that I need to shuffle randomly, but I need the two files to be randomly shuffled the same way. I have heard of shuf but I do not know how to use it for two files. Maybe there is also an easy/simple awk command I do not know about that could handle this problem.
... (3 Replies)
Hello,
This is my code:
nb_lignes=`wc -l $1 | cut -d " " -f1`
for i in $(seq $nb_lignes)
do
m=`head $1 -n $i | tail -1`
//command
done
Please how can i change it to get Get 20% of lines in File randomly to apply "command" on each line ? 20% or 40% or 60 % (it's a parameter)
Thank you. (15 Replies)
Hi
I need to select lines from a txt file, I have got a line starting with ZMIO:MSISDN= and after a few line I have another line starting with 'MOBILE STATION ISDN NUMBER' and another one starting with 'VLR-ADDRESS' I need to copy these three lines as three different columns in a separate... (3 Replies)
Dear Folks
I have one column of 15000 lines and want to select randomly 5000 of them in five different times without replacement. I am aware that command 'shuf' and 'sort -R' could select randomly those lines but I am not sure how could I avoid the replacement of selection line. Does anyone have... (10 Replies)
hi all,
trying this using shell/bash with sed/awk/grep
I have two files, one containing one column, the other containing multiple columns (comma delimited).
file1.txt
abc12345
def12345
ghi54321
...
file2.txt
abc1,text1,texta
abc,text2,textb
def123,text3,textc
gh,text4,textd... (6 Replies)
Discussion started by: shogun1970
6 Replies
LEARN ABOUT OPENSOLARIS
shuf
SHUF(1) User Commands SHUF(1)NAME
shuf - generate random permutations
SYNOPSIS
shuf [OPTION]... [FILE]
shuf -e [OPTION]... [ARG]...
shuf -i LO-HI [OPTION]...
DESCRIPTION
Write a random permutation of the input lines to standard output.
Mandatory arguments to long options are mandatory for short options too.
-e, --echo
treat each ARG as an input line
-i, --input-range=LO-HI
treat each number LO through HI as an input line
-n, --head-lines=LINES
output at most LINES lines
-o, --output=FILE
write result to FILE instead of standard output
--random-source=FILE
get random bytes from FILE (default /dev/urandom)
-z, --zero-terminated
end lines with 0 byte, not newline
--help display this help and exit
--version
output version information and exit
With no FILE, or when FILE is -, read standard input.
AUTHOR
Written by Paul Eggert.
REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>.
COPYRIGHT
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software. You may redistribute copies of it under the terms of the GNU General Public License
<http://www.gnu.org/licenses/gpl.html>. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
The full documentation for shuf is maintained as a Texinfo manual. If the info and shuf programs are properly installed at your site, the
command
info shuf
should give you access to the complete manual.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+--------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+--------------------+
|Availability | SUNWgnu-coreutils |
+--------------------+--------------------+
|Interface Stability | Uncommitted |
+--------------------+--------------------+
NOTES
Source for GNU coreutils is available on http://opensolaris.org.
shuf 6.7 December 2006 SHUF(1)