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Creating variable by for loop

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# 1  
Old 01-28-2012
Creating variable by for loop
i have a file 'detail' which contains
Code:
 cat detail
111111
222222
333333
444444

but detail may be 4 line file.6 line file or 8 line file like
Code:
cat detail
111111
222222
333333
444444
555555
666666
777777
888888

so i want a declare a loop which assign the value of first line in one variable and second to second variable and so on as per the file whatever it is 4 , 6 or 8.
please help.

thanx
Last edited by Franklin52; 01-31-2012 at 03:14 AM.. Reason: Please use code tags for code and data samples, thank you
# 2  
Old 01-28-2012
What exactly do you want to with this file?
You want to print those lines or give them as input?
# 3  
Old 01-28-2012
i want to use those variable as an input to further part...............
# 4  
Old 01-28-2012
you can use while loop if you want to input all to some script...
Code:
while read var
do
  thing-to-be-done
done < file-name

Or if you just want to print them :

Use :
Code:
sed -n <line to be printed>p file-name

Last edited by Franklin52; 01-28-2012 at 10:22 AM.. Reason: Please use code tags for code and data samples, thank you
# 5  
Old 01-28-2012
thanx for ur reply but i hv tried this................
Code:
export line1=`sed -n '1p' details.txt`
export line2=`sed -n '2p' details.txt`
export line3=`sed -n '3p' details.txt`
export line4=`sed -n '4p' details.txt`

but i want to do by loop to assign the variable......can u please help me out how to write
exact code for this?
Last edited by Franklin52; 01-31-2012 at 03:15 AM.. Reason: Please use code tags for code and data samples, thank you
# 6  
Old 01-28-2012
Well, what's your system, what's your shell?

In BASH you can do this:

Code:
C=0
while read LINE
do
        read "VAR${C}" <<<$"LINE"
        ((C++))
done <file

which will set VAR0, VAR1, ...

---------- Post updated at 01:11 PM ---------- Previous update was at 11:55 AM ----------

Actually, this will work in any shell:

Code:
C=0

while read LINE${C}
do
        C=`expr $C + 1`
done < file

# 7  
Old 01-29-2012
i used first code which giving an error
Code:
 `<' is not expected.

in this line
Code:
read "VAR${C}" <<<$"LINE"

Last edited by Franklin52; 01-31-2012 at 03:15 AM.. Reason: Please use code tags for code and data samples, thank you
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