As RudiC suggested (and as you well know from being a member of this forum for over 2.5 years), if you don't provide sample input and corresponding desired output from a couple of sample input files, you don't tell us what operating system and shell you're using, and you don't provide a clear specification of what you are trying to do, there is a good chance that any suggestions provided might not work with your data in your environment. The following is completely untested and makes several assumptions that might be wrong...
Hi,
I have a challenging task,in which i have to find the duplicate files by its name and size,then i need to take anyone of the file.Then i need to open the file and find for more than one pattern and count of that pattern.
Note:These are the samples of two files,but i can have more... (2 Replies)
Ok, another fun hiccup in my UNIX learning curve. I am trying to count the number of occurrences of an IP address across multiple files named example.hits. I can extract the number of occurrences from the files individually but when you use grep -c with multiple files you get the output similar to... (5 Replies)
Seems like can use awk and perl command. But I don't have the idea to write the command line. Thanks for all of your advise.
For example, if I have the file whose content are:
Sample 1. ATAGCAGAGGGAGTGAAGAGGTGGTGGGAGGGAGCT
Sample 2. ACTTTTATTTGAATGTAATATTTGGGACAATTATTC
Sample 3.... (1 Reply)
how to count the total number of lines of all the files under a directory using perl script..
I mean if I have 10 files under a directory then I want to count the total number of lines of all the 10 files contain. Please help me in writing a perl script on this. (5 Replies)
Please advice how can we search for a string say (abc) in multiple files and to get total occurrence of that searched string. (Need number of records that exits in period of time).
File look like this (read as filename.yyyymmdd)
a.20100101
b.20100108
c.20100115
d.20100122
e.20100129... (2 Replies)
i want to find the no:of occurrences of a word in a file
cat 1.txt
unix script unix script
unix script unix script unix script unix script
unix script unix script unix
unix
script
unix script unix script now i want to find , how many times 'unix' was occurred
please help me
thanks... (6 Replies)
Hi Guys,
I need to write a script to compare the count of two csv files each having 5 columns.
Everyday a csv file is recived.
Now we need to compare the count of todays csv file with yesterday's csv file and if the total count of records is same in todays csv file and yesterday csv file out... (3 Replies)
Hi,
Very good wishes to all!
Please help to provide the shell script for generating the record counts in filed wise from the .csv file
My question:
Source file:
Field1 Field2 Field3
abc 12f sLm
1234 hjd 12d
Hyd 34
Chn
My target file should generate the .csv file with the... (14 Replies)
Hi,
I have a .dat file with contents like the below:
Input file
============SEQ NO-1: COLUMN1==========
9835619
7152815
============SEQ NO-2: COLUMN2 ==========
7615348
7015548
9373086
============SEQ NO-3: COLUMN3===========
9373086
Expected Output: (I just... (1 Reply)
Hello All,
just wanted to export multiple tables from oracle sql using unix shell script to csv file and the below code is exporting only the first table.
Can you please suggest why? or any better idea?
export FILE="/abc/autom/file/geo_JOB.csv"
Export= `sqlplus -s dev01/password@dEV3... (16 Replies)
Discussion started by: Hope
16 Replies
LEARN ABOUT OSF1
rawtopgm
rawtopgm(1) General Commands Manual rawtopgm(1)NAME
rawtopgm - convert raw grayscale bytes into a portable graymap
SYNOPSIS
rawtopgm [-bpp [1|2]] [-littleendian] [-maxval N] [-headerskip N] [-rowskip N] [-tb|-topbottom] [width height] [imagefile]
DESCRIPTION
Reads raw grayscale values as input. Produces a PGM file as output. The input file is just a sequence of pure binary numbers, either one
or two bytes each, either bigendian or littleendian, representing gray values. They may be arranged either top to bottom, left to right or
bottom to top, left to right. There may be arbitrary header information at the start of the file (to which rawtopgm pays no attention at
all other than the header's size).
Arguments to rawtopgm tell how to interpret the pixels (a function that is served by a header in a regular graphics format).
The width and height parameters tell the dimensions of the image. If you omit these parameters, rawtopgm assumes it is a quadratic image
and bases the dimensions on the size of the input stream. If this size is not a perfect square, rawtopgm fails.
When you don't specify width and height, rawtopgm reads the entire input stream into storage at once, which may take a lot of storage.
Otherwise, rawtopgm ordinarily stores only one row at a time.
If you don't specify imagefile, or specify -, the input is from Standard Input.
The PGM output is to Standard Output.
OPTIONS -maxval N
N is the maxval for the gray values in the input, and is also the maxval of the PGM output image. The default is the maximum value
that can be represented in the number of bytes used for each sample (i.e. 255 or 65535).
-bpp [1|2]
tells the number of bytes that represent each sample in the input. If the value is 2, The most significant byte is first in the
stream.
The default is 1 byte per sample.
-littleendian
says that the bytes of each input sample are ordered with the least significant byte first. Without this option, rawtopgm assumes
MSB first. This obviously has no effect when there is only one byte per sample.
-headerskip N
rawtopgm skips over N bytes at the beginning of the stream and reads the image immediately after. The default is 0.
This is useful when the input is actually some graphics format that has a descriptive header followed by an ordinary raster, and you
don't have a program that understands the header or you want to ignore the header.
-rowskip N
If there is padding at the ends of the rows, you can skip it with this option. Note that rowskip need not be an integer. Amaz-
ingly, I once had an image with 0.376 bytes of padding per row. This turned out to be due to a file-transfer problem, but I was
still able to read the image.
Skipping a fractional byte per row means skipping one byte per multiple rows.
-bt -bottomfirst
By default, rawtopgm assumes the pixels in the input go top to bottom, left to right. If you specify -bt or -bottomfirst, rawtopgm
assumes the pixels go bottom to top, left to right. The Molecular Dynamics and Leica confocal format, for example, use the latter
arrangement.
If you don't specify -bt when you should or vice versa, the resulting image is upside down, which you can correct with pnmflip .
This option causes rawtopgm to read the entire input stream into storage at once, which may take a lot of storage. Ordinarly, raw-
topgm stores only one row at a time.
For backwards compatibility, rawtopgm also accepts -tb and -topbottom to mean exactly the same thing. The reasons these are named
backwards is that the original author thought of it as specifying that the wrong results of assuming the data is top to bottom
should be corrected by flipping the result top for bottom. Today, we think of it as simply specifying the format of the input data
so that there are no wrong results.
SEE ALSO pgm(5), rawtoppm(1), pnmflip(1)AUTHORS
Copyright (C) 1989 by Jef Poskanzer.
Modified June 1993 by Oliver Trepte, oliver@fysik4.kth.se
14 September 2000 rawtopgm(1)