Shellscript: Conditional operator: What is wrong in following shellscript if statement

Question

Here is my shellscript if condition

if [[ $RBFilePath =~ \.js$ || $RBFilePath =~ \.json$ && ${#key_array[0]} = "JAVASCRIPT" ]]; then
Blah blah
blah blah

fi

What I want here is, if $RBFilePath ends with .js or .json AND First elemeny of array: key_array is equal to "JAVASCRIPT" then execute the if block.

But it is not executing. Can someone please help telling me issue.?

Inian · Accepted Answer · 2017-07-20 14:30:02Z

2

The statement is incorrect as it checks the length of the first element of the array

${#key_array[0]} = "JAVASCRIPT"

change it to

${key_array[0]} = "JAVASCRIPT"

which checks the value of the first element in the array.

e.g.

fooArray=('foo' 'bar')
printf "%s\n" "${#fooArray[0]}"
3
printf "%s\n" "${fooArray[0]}"
foo

answered Jul 20, 2017 at 14:30

Inian

87k15 gold badges166 silver badges183 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

Om Sao Over a year ago

No No no.. How did I miss this basic :(

Inian Over a year ago

@OmSao: It happens to the best of us! ;)

Om Sao Over a year ago

One thing to confirm, Is using single Equal = for condition is best practice or should we use == ?

Inian Over a year ago

@OmSao: I would use == as a best practice

Om Sao Over a year ago

Ok, but both = and == works fine as I tested. Thanks @Inian !

Collectives™ on Stack Overflow

Shellscript: Conditional operator: What is wrong in following shellscript if statement

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related