How to write if inside another if in bash scripting language

Question

I need to write if inside another if to be looks like :

if(condition)
{
    if(condition)
    {
        //do something
    }

    //do something
}

How to write that but in bash scripting language ?

Perhaps you want to start with a Unix Shell Scripting Tutorial? — Martin Tournoij
– Martin Tournoij, Commented Feb 15, 2014 at 16:58

Muhammad Azeem · Accepted Answer · 2014-02-15 16:57:17Z

3

Condition tests using the if/then construct may be nested. The net result is equivalent to using the && compound comparison operator.

a=3

if [ "$a" -gt 0 ]
then
  if [ "$a" -lt 5 ]
  then
    echo "The value of \"a\" lies somewhere between 0 and 5."
  fi
fi

# Same result as:

if [ "$a" -gt 0 ] && [ "$a" -lt 5 ]
then
  echo "The value of \"a\" lies somewhere between 0 and 5."
fi

answered Feb 15, 2014 at 16:57

Muhammad Azeem

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MLSC · Accepted Answer · 2014-02-15 17:58:39Z

1

The structure is:

if [ condition ]; then
    if [ condition ]; then
    #Do something                                                                                                                                  
    elif [ condition ]; then
        #Do something                                                                                                                                  
    fi
else
    #Do something                                                                                                                                      
fi

You can also check conditions together with &&(AND) and with ||(OR) and many other things to know...

You can start from HERE and HERE

edited Feb 15, 2014 at 17:58

answered Feb 15, 2014 at 17:24

MLSC

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1 Comment

MLSC Over a year ago

@Akari I updated the answer with two useful links :)

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