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Shell Programming and Scripting

both sides execution of command

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# 1  
Old 05-12-2011
both sides execution of command
Hi,

i am struggling with a chunk of code.

Code:
    for ((i=1; i<=3; i++));do
        one-$i ="/tmp/one.$RANDOM"
    done

How to execute the above code.
In both sides(LHS and RHS), i am executing commands.
it is not allowing to execute.

can you please give the idea.

It should be very appreciable, if i get an example.

Thanks.
Last edited by pludi; 05-12-2011 at 05:19 AM..
# 2  
Old 05-12-2011
what are you exactly trying here ?

Please help us with some explanation.
# 3  
Old 05-12-2011
I like to get the output as
one-1="/tmp/one.22345"
one-2="/tmp/one.22346"

I mean to say like, I want to intialize two variables, one-1 one-2 with respective values.
# 4  
Old 05-12-2011
one-$i ="/tmp/one.$RANDOM" Won't work
  1. use eval
  2. no space around '='
Code:
eval "one-$i=/tmp/one.$RANDOM"

# 5  
Old 05-12-2011
Quote:
Originally Posted by frans
one-$i ="/tmp/one.$RANDOM" Won't work
  1. use eval
  2. no space around '='
Code:
eval "one-$i=/tmp/one.$RANDOM"

Code:
sh-3.00# for ((i=1; i<=3; i++));do echo $(eval "one-$i=one.$RANDOM"); done
sh: one-1=one.13352: command not found

sh: one-2=one.14261: command not found

sh: one-3=one.15170: command not found

sh-3.00#

it is saying like command not found..
but it is not command
# 6  
Old 05-12-2011
Code:
$ for ((i=1; i<=3; i++));do eval "one_$i=one.$RANDOM" ; done
$ echo $one_1
one.21586
$ echo $one_2
one.22755
$ echo $one_3
one.17778

This worked for me. can you try this.

---------- Post updated at 04:05 PM ---------- Previous update was at 04:02 PM ----------

I just changed the '-' to '_', it is not interpreting the latter as a command. Not sure why.

I think bash variables shouldn't contain special chars other than '_'.

Because it neither worked with '.'
# 7  
Old 05-12-2011
Quote:
Originally Posted by kumaran_5555
(...)
I just changed the '-' to '_', it is not interpreting the latter as a command. Not sure why.
I think bash variables shouldn't contain special chars other than '_'.
Right. I should have seen that !
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