while statement problem

Shell Programming and Scripting
1

Hi,
Here is a big head scratcher for me....

I'm creating a loop with while reading lines from a file called example.txt:

#!/bin/sh

 while read line
do
 some command > another file     ----- output to another file
done < example.txt

I would like that another file to be unique for every line executed

Is that possible at all?

thanks all :slight_smile:

2

Hi,
you can achieve that using the $RANDOM variable appending to the file name

you can check the random variable exists in your setup or not

$ print $RANDOM $RANDOM
29302 8082

it will generate two different number that means it support that

now u can create a file with filename."_"$RANDOM

thanks,
venkat

3

Unfortunately it does not support it...

4

Hi,
then do with filename appending with date

$ date +'%m%d_%H%M%S'
0124_120358

like filename.""`date +'%m%d%H%M%S'`

ex:-

$ echo "filename"_"`date +'%m%d_%H%M%S'`"
filename_0124_120542

thanks,
venkat

5

I think it is my fault not explaining myself very well.
The file name should be different but from a range of predefined values.

As an example the filenames may be contained in another file and each file1 be called on first loop, file2 on second etc.

6

Or you could also use a counter:

c=1
while read line
do
    command > file_$c
    c=$(($c + 1))
done < example.txt