06-03-2010
This is realy a wonderful code.
A bit curious can you explain how this code is executing.
Thanks
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi,
filenames:
contains name of list of files to search in.
placelist
contains the names of places to be searched in all files in "filenames"
for i in $(<filenames)
do
egrep -f placelist $i
if ]
then
echo $i
fi
done >> outputfile
Output i am getting: (0 Replies)
Discussion started by: pinnacle
0 Replies
2. Shell Programming and Scripting
Hello,
I am trying to write a bash shell script that does the following:
1.Finds all *.txt files within my directory of interest
2. reads each of the files (25 files) one by one (tab-delimited format and have the same data format)
3. skips the first 10 rows of the file
4. extracts and... (4 Replies)
Discussion started by: manishabh
4 Replies
3. UNIX for Dummies Questions & Answers
Hi guys,
say I have a few files in a directory (58 text files or somthing)
each one contains mulitple strings that I wish to replace with other strings
so in these 58 files I'm looking for say the following strings:
JAM (replace with BUTTER)
BREAD (replace with CRACKER)
SCOOP (replace... (19 Replies)
Discussion started by: rich@ardz
19 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I'd like to process multiple files. For example:
file1.txt
file2.txt
file3.txt
Each file contains several lines of data. I want to extract a piece of data and output it to a new file.
file1.txt ----> newfile1.txt
file2.txt ----> newfile2.txt
file3.txt ----> newfile3.txt
Here is... (3 Replies)
Discussion started by: Liverpaul09
3 Replies
5. Shell Programming and Scripting
Hi,
Could anyone help me to solve this problem?
I have two files "f1" and "f2" having 2 fields in each, a) file size and b) file name. The data are almost same in both the files except for few and new additional lines. Now, I have to find out and print the output as, the difference in the... (3 Replies)
Discussion started by: royalibrahim
3 Replies
6. Shell Programming and Scripting
Hi,
I have a directory /home/datasets/ which contains a bunch (720) of subdirectories called hour_1/ hour_2/ etc..etc.. in each of these there is a single text file called (hour_1.txt in hour_1/ , hour_2.txt for hour_2/ etc..etc..) and i would like to do some text processing in them.
Each of... (20 Replies)
Discussion started by: amarn
20 Replies
7. Shell Programming and Scripting
It seems like a common task, but I haven't been able to find the solution.
vitallog.txt
1310,John,Hancock
13211,Steven,Mills
122,Jane,Doe
138,Thoms,Doe
1500,Micheal,May
vitalinfo.txt
12122,Jane,Thomas
122,Janes,Does
123,Paul,Kite
**OUTPUT**
vitalfiltered.txt
12122,Jane,Thomas... (2 Replies)
Discussion started by: charles33
2 Replies
8. Shell Programming and Scripting
Hi all,
i have 50 files .data should be same in these 50 files , so my task is to find the difference. i need a logic , which finds difference between all files and print in output file with file name where it found that difference .
i tried below logic , but its not giving me what i want.
let... (2 Replies)
Discussion started by: deepakiniimt
2 Replies
9. Shell Programming and Scripting
Hi!
I'm new in awk and I need some help.
I have a folder with a lot of files and I need that awk do something in each file and print a new file with the output. The input file name should be modified when I print the outpu files.
Thanks in advance for help!
:-)
ciao (5 Replies)
Discussion started by: gabrysfe
5 Replies
10. Shell Programming and Scripting
Hi,
I need to find the difference between 2 files in unix and write the result in the new file
File1:
A
B
File2:
X 123 hajkd
Y 345 adjfka
A 123 djafjhd
B 678 dsndjks
Output file:
X 123 hajkd
Y 345 adjfka
Thanks. (6 Replies)
Discussion started by: nani1984
6 Replies
LEARN ABOUT DEBIAN
ppmquantall
ppmquantall(1) General Commands Manual ppmquantall(1)
NAME
ppmquantall - run ppmquant on a bunch of files all at once, so they share a common colormap
SYNOPSIS
ppmquantall [-ext extension] ncolors ppmfile ...
DESCRIPTION
Takes a bunch of portable pixmap as input. Chooses ncolors colors to best represent all of the images, maps the existing colors to the new
ones, and overwrites the input files with the new quantized versions.
If you don't want to overwrite your input files, use the -ext option. The output files are then named the same as the input files, plus a
period and the extension text you specify.
Verbose explanation: Let's say you've got a dozen pixmaps that you want to display on the screen all at the same time. Your screen can
only display 256 different colors, but the pixmaps have a total of a thousand or so different colors. For a single pixmap you solve this
problem with ppmquant; this script solves it for multiple pixmaps. All it does is concatenate them together into one big pixmap, run
ppmquant on that, and then split it up into little pixmaps again.
(Note that another way to solve this problem is to pre-select a set of colors and then use ppmquant's -map option to separately quantize
each pixmap to that set.)
SEE ALSO
ppmquant(1), ppm(5)
AUTHOR
Copyright (C) 1991 by Jef Poskanzer.
27 July 1990 ppmquantall(1)