mttjohnson

# example perl one line replacing contents in a file in place
perl -pi -e 's/something_to_match/replaced_with/' ./my_path/to_file.txt

# Additional regex modifiers got global multi-line and case insensitive
perl -pi -e 's/something_to_match/replaced_with/gmi' ./my_path/to_file.txt

# Using different delimiters for the regex, in this case using a # instead of the tranditional /
perl -pi -e 's#something_to_match#replaced_with#' ./my_path/to_file.txt

# If you don't want to modify a file in place you can split things up a bit