some help with read and write

chakjoy · 02-23-2008, 09:11 PM

Hi,

I have two files, 'file1' and 'file2'. 'file1' looks like:

12345678
87654321
24681357
13572468

and 'file2' looks like the following:

abcdefgh
ijklmnop
qrstuvwx
yzabcdef

I am trying to read from these files line by line and create a file that should look like the following:

12345678 | abcdefgh
87654321 | ijklmnop
24681357 | qrstuvwx
13572468 | yzabcdef

Please let me know how I can do that.

Thanks for your help.

Joy

anupamsr · 02-23-2008, 09:46 PM

The problem here is that if the files are not of same length, you will have to decide to break the look somewhere...

If on the other hand, they are of same length, this might help:

Code:

% ./a.sh
12345678 | abcdefgh
87654321 | ijklmnop
24681357 | qrstuvwx
13572468 | yzabcdef
% cat a.sh
#!/bin/zsh
exec 9<file2
cat file1|while read line1; do
	read -u 9 line2
	echo "$line1 | $line2"
done
exec 9<&-

chakjoy · 02-23-2008, 10:02 PM

Hi,

Thanks a lot. Yes it works.
Just wondering if there are other options as well.

Joy

Tinkster · 02-23-2008, 10:06 PM

paste -d"|" file1 file2

Cheers,
Tink

anupamsr · 02-23-2008, 11:10 PM

Hahaha! I didn't know of it

You learn something new everyday.

chakjoy · 02-23-2008, 11:12 PM

Thanks Guys,

Both work sweet.

You guys are awesome.

Cheers
Joy

chakjoy · 03-17-2008, 01:27 PM

I have a file test.txt like the following:

Name | ID | Details | Comment
data1 data2 data3 data4
data5 data6 data7 data8
data9 data10 data11 data12

I want to read from this file from the second row (where the actual data lies) as follows:

while read line
do
echo $line >> $out_file
done < test.txt

How can I do that

Tinkster · 03-17-2008, 02:26 PM

awk '{print $2}' infile > outfile

Cheers,
Tink