UNIX for Dummies Questions & Answers

Hi,

I'm having some trouble with an awk programme that i'm using to scan ascii files.

Unfortunately I'm not an experienced programmer but I think I am experiencing problems for a two reasons:

1) the awk was written by a PC programmer and it works on his machine, but only partly works on my mac in terminal/darwin

2) the ascii output files the awk is reading are very dirty


my ascii columns are as follows:

1: ref, 2: ignore, 3: temp, :4 water content

I am using the awk to pick up a freezing event in coulmn 2, so from + to - figures and to tell me when this coincides with a water content over 208

the awk prints all the above to below zero crossing events with any water content, not just the ones over 208. (there is one that i put in to test)

I have pasted the awk file below, and a sample of an ascii output attached?

my results from the floolwing awk are:

2 -14.4485 209.758
3151 -0.172935 3.4889
11251 -0.270655 4.35053

Any help would be appreciated

Dan

frost.awk:

{
gsub(/E\+000/,"e"); gsub(/E\-000/,"e-") # gets rid of excess zeros, note \ is to define "+" as a charcater not an action

#print $0

if (TOld>=0 && $3<0 && $4>208) print int($1/1),$3/1,$4/1 # checks if temperature drops below zero and prints ref, temp and water

TOld=$3 # resets temperature
}

You may try to run dos2unix on your datafile, remove the last incomplete line and then re-run the awk script. Your input file has MS Windows line endings ...

thanks for look at it.

sorry but maybe i am more of a dummy than you think! I think dos 2unix converst ascii files from one to the other, right? However I dont know how to run this tool or programme or whatever it is.

regarding the last incomplete line what is wrong with it. This really is all new to me, sorry

D

OK,
first of all try to run the following command:

Code:

dos2unix <your_input_file>

If your filename is copy.txt, the command will be:

Code:

dos2unix copy.txt

Some old versions of the dos2unix require an output filename:

Code:

dos2unix copy.txt copy.txt

ok

this is what happens:

dan-brownes-computer:~ danbrowne$ dos2unix /asc/files/1.1.2copy.txt /asc/results/1.1.2copy3.txt
-bash: dos2unix: command not found

any ideas?

Dan

Yes,
dos2unix is not in your search path (most likely it's not installed).

Try this instead:

Code:

tr -d '\r' < /asc/files/1.1.2copy.txt > /asc/results/1.1.2copy3.txt

great that works, i get the new file: 1.1.2copy3.txt

however, this 'looks' exactly the same as 1.1.2copy2.txt

is that correct?