How to create input read with newline in bash

14.04bashbashrccommand line

I want to ask

I have a problem, how do I get input in bash to do newlines?

read -p "List Name: " list

cat <<EOF >names.txt
List Names:
$list

EOF

i can not do a new line or use the command \n , how to add a new line command ?

I want result output names.txt like this

List Name :
    Robert
    James
    Samuel

Best Answer

If you want a list with one item per line, you can use readarray:

# Read list
echo "Enter one name per line, finish with Ctrl-D:"
readarray -t list

# Use list as normal array
echo "Name List:"
printf '%s\n' "${list[@]}"

Now you can use list as normal array, e.g. ${list[1]}.

Related Solutions

Ubuntu – Wait for input while executing bash script

you can use read command to read from STDIN.

read -n NUM -p "Enter the authorization code:" VAR

NUM: number of characters to read from STDIN
VAR: variable to save the input

if you don't know the number of characters or want to read unlimited characters from STDIN, you can remove -n NUM. this causes read command to ended by ENTER and save the result(authorization code) to $VAR.

Ubuntu – Only one line in script output

Put the output redirection on the entire loop, not just the sha256sum command. Every time you redirect, you're recreating the output file from scratch. This will just create it once, and write to it repeatedly within the loop.

while IFS=$'\n' read -r line || [ -n "$line" ]
do
 j=$line
 serial=${j}:${epoch}:${StringToken}
 echo "$serial"|sha256sum
done < "$StringCsv" > Token.csv

Best Answer

Related Solutions

Ubuntu – Wait for input while executing bash script

Ubuntu – Only one line in script output

Related Question