test -a is not working??? Logical AND

[dayananda.ms]

Hi All,

I am trying to executing the below code, but i am not getting proper result??? can any one help me.

if [ '(10>1)' -a '(2<1)' ]
then
echo "Successful condition"
else
echo "Failure condition"
fi

Here i should get "Failure condition", but i am getting Successful condition". The -a option is for Logical AND.

[burschik]

if [ 'this is a string' -a 'and strings are true' ]
  then echo "I didn't bother reading the man page"
fi

[dayananda.ms]

Hi..

I have executed with other condition also, the problem is else part is not executing.

test exp1 -a exp2

According to option -a, both the exp should be true then only it should execute. but here even one exp is fails also, still it will execute if part. So what is the solution???

[burschik]

Your first example indicates that you do not understand what expressions are considered true by test. Maybe you should show us "exp1" and "exp2"?

[wje_lf]

dayananda.ms, it's obvious from the dialog so far that you've tried reading the man page.

How about this?

if [ 10 -gt 1 -a 2 -lt 1 ]
then
  echo success
else
  echo failure
fi

[dayananda.ms]

Thank you bill...