Hi,
I have been dealing with a files only a few gigs until now and was able to get out by using the sort utility. But now, I have a terabyte file which I want to filter out unique values from.
I have a server having 8 processor and 16GB RAM with a 5 TB hdd. Is it worthwhile trying to use... (6 Replies)
After giving
grep -A4 "feature 1," <file name>
I have extracted the following text
feature 1,
subfeat 2,
type 1,
subtype 5,
dump '30352f30312f323030392031313a33303a3337'H -- "05/01/2009 11:30:37" --
--
... (1 Reply)
Hello all,
I have a file with following sample data
2009-08-26 05:32:01.65 spid5 Process ID 86:214 owns resources that are blocking processes on Scheduler 0.
2009-08-26 05:32:01.65 spid5 Process ID 86:214 owns resources that are blocking processes on Scheduler 0.
2009-08-26... (5 Replies)
Hi
I have the following info in a file -
<Cell id="25D"/>
<Cell id="26A"/>
<Cell id="26B"/>
<Cell id="26C"/>
<Cell id="27A"/>
<Cell id="27B"/>
<Cell id="27C"/>
<Cell id="28A"/>
I would like to know how would you go about counting all... (4 Replies)
I need to take the second column of a .csv file and count the number of instances of each unique value in that same second column. I'd like the output to be value,count sorted by most instances. Thanks for any guidance!
Data example:
317476,317756,0
816063,318861,0
313123,319091,0... (4 Replies)
Hello,
I need some sort of way to extract every date contained in a file, and count how many of those dates there are.
Here are the specifics:
The date format I'm looking for is mm/dd/yyyy
I only need to look after line 45 in the file (that's where the data begins)
The columns of... (2 Replies)
cat sample.csv
ID,Name,no
1,AAA,1
2,BBB,1
3,AAA,1
4,BBB,1
cut -d',' -f2 sample.csv | sort | uniq
this gives only the 2nd column values
Name
AAA
BBB
How to I get all the columns of CSV along with this? (1 Reply)
Hi Folks,
I have the below feed file named abc1.txt in which you can see there is a title and below is the respective values in the rows and it is completely pipe delimited file ,.
... (4 Replies)
Hello Everyone!
I have updated the first post so that my intentions are easier to understand, and also attached sample files (post #18).
I have over 500 text files in a directory. Over 1 GB of data. The data in those files is organised in lines:
My intention is to return one line per... (23 Replies)
Hi,
I have a huge unsorted text file. We wanted to identify the unique field values in a line and consider those fields as a primary key for a table in upstream system.
Basically, the process or script should fetch the values from each line that are unique compared to the rest of the lines in... (13 Replies)
Discussion started by: manikandan23
13 Replies
LEARN ABOUT MINIX
ppmtopgm
ppmtopgm(1) General Commands Manual ppmtopgm(1)NAME
ppmtopgm - convert a portable pixmap into a portable graymap
SYNOPSIS
ppmtopgm [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces a portable graymap as output. The output is a "black and white" rendering of the original
image, as in a black and white photograph. The quantization formula used is .299 r + .587 g + .114 b.
Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any ppm program can
read pgm (and pbm ) files automatically. pgmtoppm is for colorizing a pgm file. Also, see ppmtorgb3 for a different way of converting
color to gray. And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate the original
colors, not necessarily a way that looks like a black and white photograph.
QUOTE
Cold-hearted orb that rules the night
Removes the colors from our sight
Red is gray, and yellow white
But we decide which is right
And which is a quantization error.
SEE ALSO pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5)AUTHOR
Copyright (C) 1989 by Jef Poskanzer.
10 April 2000 ppmtopgm(1)