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thanks - that works.

#!/bin/bash

a1=( win 12,01,02,03,04 )
a2=( pre 04,05,06 )
a3=( msn 06,07,08,09 )

Given the above arrays, I want the script to return/echo the following in a loop;

win
12,01,02,03,04
...

hi again scottn,

i didn't realise your post contains two parts - i overlooked the second part.

And yes, that is what I want - thanks!

I did more search and found this works as well;

...

hi scottn,

Thanks for the reply. I'm going to do further process with my files hence the "cat" command does not meet the requirement.

Hi all,

I have two files;

file1.txt contains
Jan
Feb
March

file2.txt contains
01
02
03

How do i read the two files in a bash script so that it echos the following;

Jan 01
Feb 02...

Two related questions;

1. how do i select the nth file in a directory?
2. how do i select a range of files, say 2nd-5th?

I have done the following but I don't think the solution is a neat one....

hi all,

hope someone can assist in this. I'm trying to make a sequence of time in bash so that the output prints the following;

1950-01-01
1950-02-01
1950-03-01
...
1999-11-01
1999-12-01
...

wonderful - thanks everyone!

Thanks malikshahid85!

Is there a way to print the digits as 01, 02, 03 etc instead of 1, 2, 3? I know that independently I could use printf e.g.


printf "%02d" 4


but how do i incorporate...

Hi all,

I have files with the following names;
afgcxa.pem4jan.rain.nc
afgcxa.pem4feb.rain.nc
afgcxa.pem4mar.rain.nc
afgcxa.pem4apr.rain.nc

I want to rename them to...

Thanks radoulov,

Mind explaining what I'm doing here i.e. what the code/syntax means?

For a start, I'd like to total from all files. But I'd also like to perform other calculations like averaging etc.

Each file contains a 2000x2000 matrix. There are 1000 of such files. I'm giving a...

I tried the shell method. Does not work because when I compared the files, I do not get the result I expected.

For example, given a particular grid cell,

File1 (input)
131.63

File2 (input)...

Thanks radoulov,

Mind explaining what the following syntax means?

cat file[12]|tr '\t' '\n'|paste -sd+|bc

Hello all,

I'd like to know how to perform arithmetic on multiple files. I have got many tab-delimited files. Each file contains about 2000 rows and 2000 columns.

What I want to do is to to...

Hello all,

I'm trying to perform an averaging procedure which selects a selection of rows, average the corresponding value, selects the next set of rows and average the corresponding values etc.
...

Thanks red dove!

I just found out that it works using 'cat'.

cat file1 file2 > file 3 # appends content of the files in a single column

Paste however, appends contents by column.

paste...

Hello all,

I require assistance in combining files.
This is the scenario: I've got lots of files which contain one column in each file and would like to combine the files into one so that the...

Thanks scottn!

Thanks vidyadhar85,

Could you tell me what the syntax means?

Thanks scottn,

I did

> grep -H "WADRAIN" infile.txt > outfile.txt

and got what I wanted.

This is relatively straightforward but I also want to filter data from other columns (containing...

Hi all,

I require assistance in this.

I'd like to filter the following data to extract WADRAIN.

RAIN, 2003-01-01 00:00, 1, WADRAIN, 900, 1, 24109, 1011, 1.6, 0, 6,
RAIN, 2003-01-01 00:00,...