bash. read input “words” string between symbols [duplicate]

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-1

This question already has an answer here:

How do I split a string on a delimiter in Bash?

34 answers

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

asked Nov 22 '18 at 10:13

Lanodisoft

154

marked as duplicate by georgexsh, tripleee bash
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Nov 22 '18 at 12:13

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment |

-1

This question already has an answer here:

How do I split a string on a delimiter in Bash?

34 answers

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

asked Nov 22 '18 at 10:13

Lanodisoft

154

marked as duplicate by georgexsh, tripleee bash
Users with the bash badge can single-handedly close bash questions as duplicates and reopen them as needed.

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Nov 22 '18 at 12:13

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment |

-1

This question already has an answer here:

How do I split a string on a delimiter in Bash?

34 answers

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

asked Nov 22 '18 at 10:13

Lanodisoft

154

This question already has an answer here:

How do I split a string on a delimiter in Bash?

34 answers

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

This question already has an answer here:

How do I split a string on a delimiter in Bash?

34 answers

linux bash shell

asked Nov 22 '18 at 10:13

Lanodisoft

154

asked Nov 22 '18 at 10:13

Lanodisoft

154

asked Nov 22 '18 at 10:13

Lanodisoft

154

asked Nov 22 '18 at 10:13

Lanodisoft

154

asked Nov 22 '18 at 10:13

Lanodisoft

154

marked as duplicate by georgexsh, tripleee bash
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Nov 22 '18 at 12:13

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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Nov 22 '18 at 12:13

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

add a comment |

2 Answers
2

active

oldest

votes

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"); } }'

$

edited Nov 22 '18 at 11:00

answered Nov 22 '18 at 10:33

Kubator

1,02413

add a comment |

-1

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.)

answered Nov 22 '18 at 12:06

William Pursell

134k33210244

add a comment |

2 Answers
2

active

oldest

votes

2 Answers
2

active

oldest

votes

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"); } }'

$

edited Nov 22 '18 at 11:00

answered Nov 22 '18 at 10:33

Kubator

1,02413

add a comment |

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"); } }'

$

edited Nov 22 '18 at 11:00

answered Nov 22 '18 at 10:33

Kubator

1,02413

add a comment |

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"); } }'

$

edited Nov 22 '18 at 11:00

answered Nov 22 '18 at 10:33

Kubator

1,02413

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"); } }'

$

edited Nov 22 '18 at 11:00

answered Nov 22 '18 at 10:33

Kubator

1,02413

edited Nov 22 '18 at 11:00

answered Nov 22 '18 at 10:33

Kubator

1,02413

answered Nov 22 '18 at 10:33

Kubator

1,02413

answered Nov 22 '18 at 10:33

Kubator

1,02413

add a comment |

-1

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.)

answered Nov 22 '18 at 12:06

William Pursell

134k33210244

add a comment |

-1

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.)

answered Nov 22 '18 at 12:06

William Pursell

134k33210244

add a comment |

-1

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.)

answered Nov 22 '18 at 12:06

William Pursell

134k33210244

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.)

answered Nov 22 '18 at 12:06

William Pursell

134k33210244

answered Nov 22 '18 at 12:06

William Pursell

134k33210244

answered Nov 22 '18 at 12:06

William Pursell

134k33210244

answered Nov 22 '18 at 12:06

William Pursell

134k33210244

add a comment |

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