Reading a file line by line from BASH

To read a file line by line from BASH you can use one of the following options:

For example, if we have the following file (emails.txt):

Option 1

$ while read line; do echo "Sending email to $line"; done < emails.txt

$ cat emails.txt |while read line; do  echo "Sending email to $line"; done

I suggest AWK if the file has more than one column since AWK allows to specify columns separator, if we have the following file:

then we can type:

awk -F'|' '{email=$1" <"$2">"} {print "Sending email to "email;}' emails.txt

Reading a file line by line from BASH | Ecency