I have an odd issue.
I am trying to copy some files/folders to my linux box via a burned CD which I created on my mac. When I browse the files on the mac (or my windows box), everything looks fine (some of the folder names start with a capital letter, which is needed for everything to work... (8 Replies)
Hello,
I have a list of words.. ranging from 4 to any characters long.. to not more than 20 though.
How can I select only first seven letters of the list of words?
example:-
wwwwwwwwww
eeeee
wererreetf
sdsarddrereewtewt
sdsdsds
sdsd
ereetetttt
ewtwertwrttrttrtrtwtrww
I... (10 Replies)
Hey guys..
Can experts help me in achieving my purpose..
I have a file which contains email address of some 100 to 1000 domains, I need only the domain names..
Eg: abc@yahoo.com
hd@gamil.com
ed@hotmail.com
The output should contain only
Yahoo.com
... (5 Replies)
I want to add letters A,B,C,… in front of every line of input while printing them out using PERL.
eg
A file is parsed as a cmd line arg and its context will be displayed as
A line1...
B line 2..
I tried this..but I want better and perfect solution!
!perl -p
my $counter;
BEGIN { $counter... (4 Replies)
--please have a look at my third post in this thread! there I explained it more clearly--
Hey guys.
I posted a complex problem few days back. No reply! :|
Here is simplified question:
I have a matrix with 0/1:
* col1 col2 col3
row1 1 0 1
row2 0 0 ... (5 Replies)
Hi,
I have a large file that looks like this:
@FCC189PACXX:2:1101:1420:2139/1
AGCGAGACTCCGTCTCAAAAAGAAAAAATTTTTCAAAATATTGCAATGGGCTTGTAATTTCTGCTTAAATGTCAGGAGGTCTGAGCCATT
+
bbbeeeceggggghiiiiiiiiiihfihihiiihhhghiihhihifhihiihhhhhhhhiiigfggggdceeeeebdcc^``bbcbccbb... (3 Replies)
I was wondering how I could cut only the names of items from the following list:
spoons50
cups29
forks50
plates29
I used "man cut" and thought -c would help, but the items have different character lengths. Please note that there is no space between the item and number (so I can't use... (10 Replies)
Hi there, friends!
Writing exams again! This time my wish would be to randomize certain columns in a csv file. Given a file containing records consisting of 3 columns tab-separated:
A B C
A B C
A B C
I would love to get the columns of each record in random order...separated by a tab as... (12 Replies)
Hi there,
first of all this is not homework...this is a new type of exercise for practicing vocabulary with my students.
I have a file consisting of two columns, separated by a tab, each line consisting of a word and its definition, separated by a line break.
What i need is to replace a... (15 Replies)
Discussion started by: eldeingles
15 Replies
LEARN ABOUT FREEBSD
random
RANDOM(6) BSD Games Manual RANDOM(6)NAME
random -- random lines from a file or random numbers
SYNOPSIS
random [-elrUuw] [-f filename] [denominator]
DESCRIPTION
Random has two distinct modes of operations. The default is to read in lines from the standard input and randomly write them out to the
standard output with a probability of 1 / denominator. The default denominator for this mode of operation is 2, giving each line a 50/50
chance of being displayed.
The second mode of operation is to read in a file from filename and randomize the contents of the file and send it back out to standard out-
put. The contents can be randomized based off of newlines or based off of space characters as determined by isspace(3). The default
denominator for this mode of operation is 1, which gives each line a chance to be displayed, but in a random(3) order.
The options are as follows:
-e If the -e option is specified, random does not read or write anything, and simply exits with a random exit value of 0 to denominator
- 1, inclusive.
-f filename
The -f option is used to specify the filename to read from. Standard input is used if filename is set to '-'.
-l Randomize the input via newlines (the default).
-r The -r option guarantees that the output is unbuffered.
-U Tells random(6) that it is okay for it to reuse any given line or word when creating a randomized output.
-u Tells random(6) not to select the same line or word from a file more than once (the default). This does not guarantee uniqueness if
there are two of the same tokens from the input, but it does prevent selecting the same token more than once.
-w Randomize words separated by isspace(3) instead of newlines.
SEE ALSO random(3), fortune(6)HISTORY
The functionality to randomizing lines and words was added in 2003 by Sean Chittenden <seanc@FreeBSD.org>.
BUGS
No index is used when printing out tokens from the list which makes it rather slow for large files (10MB+). For smaller files, however, it
should still be quite fast and efficient.
BSD February 8, 2003 BSD