How to assign specific line from another file to a variable in bash

Question

I have another file that has 2 numerical values...

22

35

I want to read those values and assign each to a variable.

There will only ever be two values, so a loop shouldn't be necessary.

I found ways to get the value line by line, but I'm unsure how to save those values to a variable that I can use in my main script.

John1024 · Accepted Answer · 2014-03-24 19:36:19Z

3

Another way to read two lines in succession is:

{ read var1 ; read var2 ; } <data

answered Mar 24, 2014 at 19:36

John1024

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Comments

anubhava · Accepted Answer · 2014-03-24 19:31:55Z

0

You can use:

read a b < <(egrep -o '[0-9]+' file|tr '\n' ' ')

answered Mar 24, 2014 at 19:31

anubhava

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glenn jackman · Accepted Answer · 2014-03-24 19:41:06Z

0

With bash 4, you can read the lines into an array

mapfile -t numbers < file
echo ${numbers[0]} ${numbers[1]}

answered Mar 24, 2014 at 19:41

glenn jackman

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