Bash Examples

loop.sh

#!/bin/bash
VALUES="value1","value2"
(IFS=,
  for v in $VALUES; do
      echo "$v"
  done
)

sed-before-after.sh

#To append after the pattern: (-i is for inplace replace). line1 and line2 are the lines you want to append(or prepend)

sed -i '/pattern/a \
line1 \
line2' inputfile

#To prepend the lines before:

sed -i '/pattern/i \
line1 \
line2' inputfile