[SOLVED] VAR="$VAR$IFS$NEWINPUT" not working

patrick295767 · 01-06-2012, 12:45 AM

Hello,

I would like to had a \n line feed into my variable with new input lines NEWINPUT is for instance /tmp/tmp.i987/file1 and so on.

How would it be possible with variables?

thank you

corp769 · 01-06-2012, 12:53 AM

Are you saying you want multiple file names within one variable, seperate by LF+CR? You are better off creating an array to do this, especially if you want actual control of how they are being stored and manipulated.

Cheers,

Josh

patrick295767 · 01-06-2012, 12:55 AM

Quote:

Originally Posted by corp769

Are you saying you want multiple file names within one variable, seperate by LF+CR? You are better off creating an array to do this, especially if you want actual control of how they are being stored and manipulated.

Cheers,

Josh

something similar to

Code:

echo "/tmp/tmp.i987/file1" > /tmp/test.txt
echo "/tmp/tmp.i987/file2" >> /tmp/test.txt
echo "/tmp/tmp.i987/file3" >> /tmp/test.txt
... 

VAR=`cat /tmp/test.txt`

corp769 · 01-06-2012, 01:01 AM

Yes, you could do it like that, but what do you need to actually do with the variable? I am asking because if you use an array, you can use a loop to cycle through and increment a variable, and you can manipulate each file name independently.

David the H. · 01-06-2012, 01:49 AM

Or to be even more clear, this has all the hallmarks of a classic XyProblem.

What we really want to know is what your ultimate goal is, so that we can tell you how to do it right, and not just help you to do it the wrong way better.

corp769 · 01-06-2012, 02:10 AM

Quote:

Originally Posted by David the H.

Or to be even more clear, this has all the hallmarks of a classic XyProblem.

What we really want to know is what your ultimate goal is, so that we can tell you how to do it right, and not just help you to do it the wrong way better.

True, you have a point. I'm just forking out ideas.... But on that note, to the OP - What exactly are you trying to do?

NevemTeve · 01-06-2012, 04:18 AM

Code:

$ VAR="$VAR"$'\n'$(date)
$ VAR="$VAR"$'\n'$(date)
$ VAR="$VAR"$'\n'$(date)

$ echo "$VAR"

Fri Jan  6 11:17:25 CET 2012
Fri Jan  6 11:17:26 CET 2012
Fri Jan  6 11:17:26 CET 2012

patrick295767 · 01-06-2012, 05:53 AM

Quote:

But on that note, to the OP - What exactly are you trying to do?

I do not understand to question. Simply to do as below:

Quote:

Originally Posted by NevemTeve

Code:

$ VAR="$VAR"$'\n'$(date)
$ VAR="$VAR"$'\n'$(date)
$ VAR="$VAR"$'\n'$(date)

$ echo "$VAR"

Fri Jan  6 11:17:25 CET 2012
Fri Jan  6 11:17:26 CET 2012
Fri Jan  6 11:17:26 CET 2012

thank you!

corp769 · 01-06-2012, 06:03 AM

Oh ok, fair enough then!