So I am using an awk command to return a specific column in a file.
I suspect that you can do much better if you extract the value clean from the first pass when you use awk to get the specific column.
If you post a few lines from the original file containing representative data, maybe a straight shot can be suggested.
I have few files in unix which are in dos format. While I am copying these files, ^M, ^@, etc characters are being generated.
I tried dos2unix command in Linux and it doesn't work.
I tried sed to remove these characters but they won't go.
I came to about this 'tr' command and tried to use it... (16 Replies)
Hi
I have a file that has semicolons in it (;) is there a way to just remove these in the file. Example
name: Joe Smith; group: Group1;
name: Mary White; group: Group2; (2 Replies)
Hi,
I have a very huge file and it contains some unprintable characters like ^H and ^D.
If I try to remove using cat test1.ser| tr -d '\136 110'>newfile1 it is only removing ^and all spaces in the file.
How can I remove these characters (^D ^H) and keep my spaces as it is?
Thanks &... (1 Reply)
hi i'm new to shell scripts and have a small problem
i am running a batch converter that returns all flash .flv files in a directory and create a png image from each one
the problem i have is the $1 variable , its ok on the first call but on the secound call $1.png , i have extra... (1 Reply)
Hi all,
Any help on how to do the following? :eek:
I have an infile as follows:
_thisishowyouwritehelloworld
_thisisalsohowyouwritehelloworld2
I want to delete the characters from "_" to "how" and be left with:
youwritehelloworld
youwritehelloworld2
I am able to do delete from a... (2 Replies)
hi
I have a perl script conv.pl. when i execute this file and direct i to log file I see lots of ^M characters in the log file. There is no ^M in conv.pl file. Log file is generated only after conv.pl is executed.
Please help as how to get rid of these.
This conv.pl is going to get schduled... (0 Replies)
hi
I have a perl script conv.pl. when i execute this file and direct i to log file I see lots of ^M characters in the log file. There is no ^M in conv.pl file. Log file is generated only after conv.pl is executed.
Please help as how to get rid of these.
This conv.pl is going to get schduled... (5 Replies)
Hi,
I want to removing ^M characters from a file and combine the line with the next line.
ex:
issue i have:
ABC^M^M
DEF
solution i need:
ABCDEF
I found that you by using the following command you can remove new line characters.
tr -d '\r' < infile.csv > outfile.csv
still... (10 Replies)
Hi
Does anyone know of a command that will extract only the Login name alison and year 2005 from the following output.
jamesm> finger alison
Login name: alison In real life: Alison Smith - Queensland
Directory: /data/home/alison Shell: /usr/bin/ksh... (2 Replies)
Hi there,
Im having a bit of difficulty with this one and I suspect its because of the character I want to match against maybe causing me a problem, but i wanted to remove everything up to (but not including) the first instance of '{' in a string
so for example the string that I want to... (2 Replies)
Discussion started by: hcclnoodles
2 Replies
LEARN ABOUT OSX
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)