Storing command output lines into array based on new line character

Question

I have a variable as below & i perform certain operations to print the output one by one as mentioned below.

a="My name is A. Her Name is B. His Name is C"
echo "$a" | awk -F '[nN]ame |\\.' '{for (i=2; i<=NF; i+=2) print $i}'

The output is

is A
is B
is C

When I store the results into an array, it considers space as array separator and stores value. but i want to store the each line of the output to each array index values as below

x=($(awk -F '[nN]ame |\\.' '{for (i=2; i<=NF; i+=2) print $i}' <<< "$a"))

out puts ,

${x[0]} = is
${x[1]} = A
..and so on...

What i expect is

${x[0]} = is A
${x[1]} = is B
${x[2]} = is C

Also echo ${#x[@]} = 6 ; It should be = 3

Jotne · Accepted Answer · 2014-03-04 09:29:49Z

3

You can also use the mapfile command (bash version 4 or higher):

tempX=$(awk -F '[nN]ame |\\.' '{for (i=2; i<=NF; i+=2) print $i}' <<< "$a")
mapfile -t x <<< "$tempX"

~$ echo "${x[0]}"
is A

edited Mar 4, 2014 at 9:29

Jotne

41.7k13 gold badges54 silver badges58 bronze badges

answered Mar 4, 2014 at 7:46

Abhishek Bansal

12.7k4 gold badges34 silver badges46 bronze badges

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

4 Comments

logan Over a year ago

But it returns full data echo ${x[0]} = is A is B is C

Abhishek Bansal Over a year ago

Wrap argument of echo in quotes echo "${x[0]}"

logan Over a year ago

now returns one by one... i want only the first line to in the first array.. (see my question) $ echo "${x[0]}" is A is B is C [

Abhishek Bansal Over a year ago

@logan For that you need bash version 4 or higher.

Timmah · Accepted Answer · 2014-03-04 08:00:44Z

2

OK try below:

i=0
while read v; do
    x[i]="$v"
    (( i++ ))
done < <(awk -F '[nN]ame |\\.' '{for (i=2; i<=NF; i+=2) print $i}' <<< "$a")

edited Mar 4, 2014 at 8:00

answered Mar 4, 2014 at 7:43

Timmah

2,12119 silver badges18 bronze badges

2 Comments

logan Over a year ago

But it returns full data echo ${x[0]} = is A is B is C

logan Over a year ago

i expect ${x[0]} = is A ${x[1]} = is B ${x[2]} = is C

Collectives™ on Stack Overflow

Storing command output lines into array based on new line character

2 Answers 2

4 Comments

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

4 Comments

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related