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12-02-2008
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eval misconception
Hi, I have two files "foo" and "bar" Code:
$ cat foo a is \$a and b is \$b Code:
$ cat bar car tree using the below 'while' loop I expect the output to be: a is car and b is tree Code:
while read a b; do
eval echo $(cat foo) # o/p: a is $a and b is $b
eval "echo $(eval "cat foo")" # o/p: a is $a and b is $b
done < bar
rather getting the one which I mentioned as 'o/p'. I am not very sure about eval, how it works, so pls explain and correct me where I have gone wrong. Last edited by royalibrahim; 12-02-2008 at 05:23 AM.. |
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