Tukukkk

I have this kind of input in a bash I'm creating:

cat-dog-lion

I need my program to do something with each word like this

`if first_word == "cat" 

 do stuff 

    if second_word == "dog" 

    do other stuff`

How should I do this?
Thank you

BASH solution:

input='cat-dog-lion'

if [[ "${input}" =~ "^cat-?" ]]

then

  echo "do stuff"

  if [[ "${input}" =~ "^cat-dog-?" ]]

  then

    echo "do other stuff"

  fi

fi

If wanna AWK solution here it is:

awk -F'-' '{ if ($1=="cat") { print("do stuff"); if ($2=="dog") print("do other stuff"); } }'

Test:

$ echo 'cat-dog-lion' | awk -F'-' '{ if ($1=="cat") { print("do stuff"); if ($2=="dog") print("do other stuff"); } }'

do stuff

do other stuff

$ echo 'cat-wolf-lion' | awk -F'-' '{ if ($1=="cat") { print("do stuff"); if ($2=="dog") print("do other stuff"); } }'

do stuff

$ echo 'lynx-dog-lion' | awk -F'-' '{ if ($1=="cat") { print("do stuff"); if ($2=="dog") print("do other stuff"); } }'

$

If the input field separator is a -, you should call read with IFS set appropriately:

echo 'cat-dog-lion' | { IFS=- read first_word second_word third_word other_stuff

case $first_word in

cat) ... ;;

*)   ... ;;

esac

case $second_word in

...

esac

...

}

Note that the enclosing { and } are important, as the variables go out of scope after the closing {. (The pipe creates a subprocess in which the variables exist.)