Adding data from an array to a new column in a file using bash [duplicate] - bash

Question

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Iterate over two arrays simultaneously in bash
(6 answers)
How to print two arrays side by side with bash script?
(2 answers)
Closed 2 years ago.
So I have Name age and city data:
name=(Alex Barbara Connor Daniel Matt Peter Stan)
age=(22 23 55 32 21 8 89)
city=(London Manchester Rome Alberta Naples Detroit Amsterdam)
and I want to set up the following as 3 column data with the headings Name Age and city, I can easily get the first column using
touch info.txt
echo "Name Age City" > info.txt
for n in ${name[#]}; do
echo $n >> info.txt
done
but I can't figure how to get the rest of the data, and I can't seem to find anywhere on how to add data that's different as a new column.
Any help would be greatly appreciated, thank you.

Answer 1

Try something like this:
name=(Alex Barbara Connor Daniel Matt Peter Stan)
age=(22 23 55 32 21 8 89)
city=(London Manchester Rome Alberta Naples Detroit Amsterdam)
touch info.txt
echo "Name Age City" > info.txt
for n in $(seq 0 6); do
echo ${name[$n]} ${age[$n]} ${city[$n]} >> info.txt
done
Output in info.txt:
Name Age City
Alex 22 London
Barbara 23 Manchester
Connor 55 Rome
Daniel 32 Alberta
Matt 21 Naples
Peter 8 Detroit
Stan 89 Amsterdam

Answer 2

JoseLinares solved your problem. For your information, here is a solution with the paste command whose purpose is exactly that: putting data from different sources in separate columns.
$ printf 'Name\tAge\tCity\n'
$ paste <(printf '%s\n' "${name[#]}") \
<(printf '%3d\n' "${age[#]}") \
<(printf '%s\n' "${city[#]}")
Name Age City
Alex 22 London
Barbara 23 Manchester
Connor 55 Rome
Daniel 32 Alberta
Matt 21 Naples
Peter 8 Detroit
Stan 89 Amsterdam

Answer 3

You can fix a specific width for each column (here 20 is used)
name=(Alex Barbara Connor Daniel Matt Peter Stan)
age=(22 23 55 32 21 8 89)
city=(London Manchester Rome Alberta Naples Detroit Amsterdam)
for i in "${!name[#]}"; do
printf "%-20s %-20s %-20s\n" "${name[i]}" "${age[i]}" "${city[i]}"
done
Output:
Alex 22 London
Barbara 23 Manchester
Connor 55 Rome
Daniel 32 Alberta
Matt 21 Naples
Peter 8 Detroit
Stan 89 Amsterdam