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works like a dream! Many thanks!

Dear Unix Gurus,

I have a text file with multiple columns, for example, see sample.txt below

0 1 301
1 4 250
2 6 140
3 2 610
7 1 180I want to find the maximum in, say, column 3,...

Great! It works. Many thanks!!

Dear Unixers,

I'm having some difficulty in converting an n x m data matrix into a dataset of 3 columns and nxm rows. As an example I want to convert this dataset


2 3 4 5
2 ...

Thanks guys.
my problem is a little bit complicated because my datafile contains hundreds of rows, so I couldn't possibly create a blank file and fill it up by hand as suggested by joeyg. But your...

Hi All,

I have a sample datafile:


5.1
5.2
0.8
6.1


What I want to do is create an additional 3 rows with the number "0.7". so that I now have:


5.1
5.2
0.8
6.1
0.7
0.7

Hi,

I want to insert a pre-defined number, i.e. in this case "-999.99", into all blank rows.

The reason for this is that I want to use the datafile to generate histograms - one for each data...

Dear Unix Gurus,

I have a dataset consisting of a number of uneven columns. What I would like to do is fill up the missing rows with an arbitrary text of fixed value so that all columns now have...

Thanks guys,

Your answers worked except for the answer given by gaurav1086


awk '!/SCAN/{print}' in_file


your script prints all lines not containing the word SCAN! I think that...

Dear Unix Gurus,

I've got a data file with a few hundred lines (see truncated sample)...


BEGIN_SCAN1
TASK_NAME=LA48 PDD Profiles
PROGRAM=ArrayScan
1.00 21.220E+00
2.00 ...

Hi,

I revisited it too and scratched my head as well! There's a bug in the script...if firstslice is bigger than lastslice it won't work. So I've tried a different tack using awk.

as a...

doesn't work. can I just ask..did you actually try out your suggestions bufore suggesting them to the forum?

I'm not sure I understand you. Doing echo "$zposition" |bc returns the correct output. But doing echo "sl$[n]_z$[zposition].txt" does not. This is my problem.

Dear Unix Gurus,

I have a list of files that I want to loop over....for example:

sl40_z11.70.txt
sl41_z11.40.txt
sl42_z11.10.txt
sl43_z10.80.txt


using the script


#!/bin/sh
#...

Great! thanks guys! :D:D

Dear Unix Gurus,

I have a sample data set that looks like this


y1 y2 y3 y4 y5
x1 0.3 0.5 2.3 3.1 5.1
x2 1.2 4.1 3.5 1.7 1.2
x3 3.1 2.1 1.0 4.1 2.1
x4 5.0 4.0 6.0 7.0 1.1
I...

thanks.

nice! it works.

thanks

doesn't work. my screen hangs.

Dear Unix gurus,

Perhaps I'm missing something,.....I'm having the most infernal difficulty getting AWK to read in an environment variable. For example,


value=5
awk '{print ""$value""}'
...

$FILE. it makes no difference either way. I've just tried running the script as a file with the inputfile path set to $file and it worked.

hello cfajohnson,

Yes, I have $FILE set to my inputfile path. It still hangs. your script syntax isn't quite right it seems or perhaps it has something to do with my shell? I use bash. $(cat <...

Thanks guys!

The solutions by Krabu and Vidyadhar85 worked nicely. The x and y I put in for clarity, the original datafile contains only numbers. your solutions works for either case.

The...

Dear unix gurus,

I have a data file that looks something like this ...


x y x y x y x y x y
0 3836 30 3915 60 5984 90 7388 120 8385...

it worked. thanks.:b: