bash iterate over lines code example

Example 1: bash iterate over lines of a file

while read p; do
  echo "$p"
done <peptides.txt

Example 2: bash for each line of file

while read p; do
  echo "$p"
done <peptides.txt

Example 3: read file line loop in bash

for word in $(cat peptides.txt); do echo $word; done

Example 4: bash single line loop

while true; do foo; sleep 2; done