How to read only certain parts of a string using read command? [duplicate]

-1

This question already has an answer here:

How to use the read command in Bash?

8 answers

Let's make this example:

echo "Choose your color and number: "

My answer: Blue 2

I want to read the first word and the second word, something like this:

read COLOR NUMBER

and then I can use $COLOR (first word, or Blue) and $NUMBER (second word, or 2) as variables

How can I do it? Thanks

edited Jan 4 at 5:14

jww

54.1k41234513

asked Jan 2 at 22:24

MELEgrane Dellabi

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

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Jan 4 at 5:32

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.

3

Uhm.. That's exactly how you do it.

– that other guy
Jan 2 at 22:30

Did you actually try your pseudocode before asking? :)

– Charles Duffy
Jan 2 at 22:36

2

BTW, better to use lowercase names for your own variables -- that way you don't stomp on reserved names meaningful to the shell. See the relevant standards documentation at pubs.opengroup.org/onlinepubs/9699919799/basedefs/…: The name space of environment variable names containing lowercase letters is reserved for applications. Applications can define any environment variables with names from this name space without modifying the behavior of the standard utilities -- true for regular shell variables too, because setting one overwrites any like-named environment variable.

– Charles Duffy
Jan 2 at 22:36

1

Possible duplicate of How to use the read command in Bash?

– jww
Jan 4 at 5:16

add a comment |

-1

This question already has an answer here:

How to use the read command in Bash?

8 answers

Let's make this example:

echo "Choose your color and number: "

My answer: Blue 2

I want to read the first word and the second word, something like this:

read COLOR NUMBER

and then I can use $COLOR (first word, or Blue) and $NUMBER (second word, or 2) as variables

How can I do it? Thanks

edited Jan 4 at 5:14

jww

54.1k41234513

asked Jan 2 at 22:24

MELEgrane Dellabi

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

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Jan 4 at 5:32

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.

3

Uhm.. That's exactly how you do it.

– that other guy
Jan 2 at 22:30

Did you actually try your pseudocode before asking? :)

– Charles Duffy
Jan 2 at 22:36

2

BTW, better to use lowercase names for your own variables -- that way you don't stomp on reserved names meaningful to the shell. See the relevant standards documentation at pubs.opengroup.org/onlinepubs/9699919799/basedefs/…: The name space of environment variable names containing lowercase letters is reserved for applications. Applications can define any environment variables with names from this name space without modifying the behavior of the standard utilities -- true for regular shell variables too, because setting one overwrites any like-named environment variable.

– Charles Duffy
Jan 2 at 22:36

1

Possible duplicate of How to use the read command in Bash?

– jww
Jan 4 at 5:16

add a comment |

-1

This question already has an answer here:

How to use the read command in Bash?

8 answers

Let's make this example:

echo "Choose your color and number: "

My answer: Blue 2

I want to read the first word and the second word, something like this:

read COLOR NUMBER

and then I can use $COLOR (first word, or Blue) and $NUMBER (second word, or 2) as variables

How can I do it? Thanks

edited Jan 4 at 5:14

jww

54.1k41234513

asked Jan 2 at 22:24

MELEgrane Dellabi

This question already has an answer here:

How to use the read command in Bash?

8 answers

Let's make this example:

echo "Choose your color and number: "

My answer: Blue 2

I want to read the first word and the second word, something like this:

read COLOR NUMBER

and then I can use $COLOR (first word, or Blue) and $NUMBER (second word, or 2) as variables

How can I do it? Thanks

This question already has an answer here:

How to use the read command in Bash?

8 answers

linux bash shell

edited Jan 4 at 5:14

jww

54.1k41234513

asked Jan 2 at 22:24

MELEgrane Dellabi

edited Jan 4 at 5:14

jww

54.1k41234513

asked Jan 2 at 22:24

MELEgrane Dellabi

edited Jan 4 at 5:14

jww

54.1k41234513

edited Jan 4 at 5:14

jww

54.1k41234513

edited Jan 4 at 5:14

jww

54.1k41234513

asked Jan 2 at 22:24

MELEgrane Dellabi

asked Jan 2 at 22:24

MELEgrane Dellabi

asked Jan 2 at 22:24

MELEgrane Dellabi

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

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Jan 4 at 5:32

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.

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

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Jan 4 at 5:32

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.

3

Uhm.. That's exactly how you do it.

– that other guy
Jan 2 at 22:30

Did you actually try your pseudocode before asking? :)

– Charles Duffy
Jan 2 at 22:36

2

BTW, better to use lowercase names for your own variables -- that way you don't stomp on reserved names meaningful to the shell. See the relevant standards documentation at pubs.opengroup.org/onlinepubs/9699919799/basedefs/…: The name space of environment variable names containing lowercase letters is reserved for applications. Applications can define any environment variables with names from this name space without modifying the behavior of the standard utilities -- true for regular shell variables too, because setting one overwrites any like-named environment variable.

– Charles Duffy
Jan 2 at 22:36

1

Possible duplicate of How to use the read command in Bash?

– jww
Jan 4 at 5:16

add a comment |

3

Uhm.. That's exactly how you do it.

– that other guy
Jan 2 at 22:30

Did you actually try your pseudocode before asking? :)

– Charles Duffy
Jan 2 at 22:36

2

BTW, better to use lowercase names for your own variables -- that way you don't stomp on reserved names meaningful to the shell. See the relevant standards documentation at pubs.opengroup.org/onlinepubs/9699919799/basedefs/…: The name space of environment variable names containing lowercase letters is reserved for applications. Applications can define any environment variables with names from this name space without modifying the behavior of the standard utilities -- true for regular shell variables too, because setting one overwrites any like-named environment variable.

– Charles Duffy
Jan 2 at 22:36

1

Possible duplicate of How to use the read command in Bash?

– jww
Jan 4 at 5:16

Uhm.. That's exactly how you do it.

– that other guy
Jan 2 at 22:30

Did you actually try your pseudocode before asking? :)

– Charles Duffy
Jan 2 at 22:36

BTW, better to use lowercase names for your own variables -- that way you don't stomp on reserved names meaningful to the shell. See the relevant standards documentation at pubs.opengroup.org/onlinepubs/9699919799/basedefs/…: The name space of environment variable names containing lowercase letters is reserved for applications. Applications can define any environment variables with names from this name space without modifying the behavior of the standard utilities -- true for regular shell variables too, because setting one overwrites any like-named environment variable.

– Charles Duffy
Jan 2 at 22:36

Possible duplicate of How to use the read command in Bash?

– jww
Jan 4 at 5:16

add a comment |

1 Answer
1

active

oldest

votes

Use read word1 word2 ... wordN to assign words to $wordN:

echo "word1: $word1"

echo "word2: $word2"  

echo "wordN: $wordN"

Use -a array to access the words using their index.
```
echo "${array[0]}"

echo "${array[1]}"
```

See man page:

read [-a array][name ...]

The line is split into fields as with word
splitting, and the first word is assigned to the first NAME, the second
word to the second NAME, and so on, with any leftover words assigned to
the last NAME.

-a array assign the words read to sequential indices of the array
variable ARRAY, starting at zero

edited Jan 2 at 22:43

Charles Duffy

181k28205261

answered Jan 2 at 22:28

Laurens Deprost

978114

Ok, this did work. Thank to you both!

– MELEgrane Dellabi
Jan 2 at 22:49

add a comment |

1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

Use read word1 word2 ... wordN to assign words to $wordN:

echo "word1: $word1"

echo "word2: $word2"  

echo "wordN: $wordN"

Use -a array to access the words using their index.
```
echo "${array[0]}"

echo "${array[1]}"
```

See man page:

read [-a array][name ...]

The line is split into fields as with word
splitting, and the first word is assigned to the first NAME, the second
word to the second NAME, and so on, with any leftover words assigned to
the last NAME.

-a array assign the words read to sequential indices of the array
variable ARRAY, starting at zero

edited Jan 2 at 22:43

Charles Duffy

181k28205261

answered Jan 2 at 22:28

Laurens Deprost

978114

Ok, this did work. Thank to you both!

– MELEgrane Dellabi
Jan 2 at 22:49

add a comment |

Use read word1 word2 ... wordN to assign words to $wordN:

echo "word1: $word1"

echo "word2: $word2"  

echo "wordN: $wordN"

Use -a array to access the words using their index.
```
echo "${array[0]}"

echo "${array[1]}"
```

See man page:

read [-a array][name ...]

The line is split into fields as with word
splitting, and the first word is assigned to the first NAME, the second
word to the second NAME, and so on, with any leftover words assigned to
the last NAME.

-a array assign the words read to sequential indices of the array
variable ARRAY, starting at zero

edited Jan 2 at 22:43

Charles Duffy

181k28205261

answered Jan 2 at 22:28

Laurens Deprost

978114

Ok, this did work. Thank to you both!

– MELEgrane Dellabi
Jan 2 at 22:49

add a comment |

Use read word1 word2 ... wordN to assign words to $wordN:

echo "word1: $word1"

echo "word2: $word2"  

echo "wordN: $wordN"

Use -a array to access the words using their index.
```
echo "${array[0]}"

echo "${array[1]}"
```

See man page:

read [-a array][name ...]

The line is split into fields as with word
splitting, and the first word is assigned to the first NAME, the second
word to the second NAME, and so on, with any leftover words assigned to
the last NAME.

-a array assign the words read to sequential indices of the array
variable ARRAY, starting at zero

edited Jan 2 at 22:43

Charles Duffy

181k28205261

answered Jan 2 at 22:28

Laurens Deprost

978114

Use read word1 word2 ... wordN to assign words to $wordN:

echo "word1: $word1"

echo "word2: $word2"  

echo "wordN: $wordN"

Use -a array to access the words using their index.
```
echo "${array[0]}"

echo "${array[1]}"
```

See man page:

read [-a array][name ...]

The line is split into fields as with word
splitting, and the first word is assigned to the first NAME, the second
word to the second NAME, and so on, with any leftover words assigned to
the last NAME.

-a array assign the words read to sequential indices of the array
variable ARRAY, starting at zero

edited Jan 2 at 22:43

Charles Duffy

181k28205261

answered Jan 2 at 22:28

Laurens Deprost

978114

edited Jan 2 at 22:43

Charles Duffy

181k28205261

edited Jan 2 at 22:43

Charles Duffy

181k28205261

edited Jan 2 at 22:43

Charles Duffy

181k28205261

answered Jan 2 at 22:28

Laurens Deprost

978114

answered Jan 2 at 22:28

Laurens Deprost

978114

answered Jan 2 at 22:28

Laurens Deprost

978114

Ok, this did work. Thank to you both!

– MELEgrane Dellabi
Jan 2 at 22:49

add a comment |

Ok, this did work. Thank to you both!

– MELEgrane Dellabi
Jan 2 at 22:49

Ok, this did work. Thank to you both!

– MELEgrane Dellabi
Jan 2 at 22:49

add a comment |

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