Email Address Munging and De-munging Using SED https://en.wikipedia.org/wiki/Address_munging https://en.wikipedia.org/wiki/Sed

demunge_email.sh

# de-munge email address
#
# accepts a munged email address in one of the following formats (in this case piped from the OS X clipboard)
# 1) something at domain dot com
# or
# 2) something at domain (dot) com
# all spaces will be removed
#

echo `pbpaste` | sed -e 's/ at /@/' -e 's/ dot /./' -e 's/ (dot) /./' -e 's/ //g'

munge_email.sh

# munge email address
#
# accepts a standard email address (in this case piped from the OS X clipboard) 
# expected email format [email protected]
#

echo `pbpaste` | sed -e 's/@/ at /' -e 's/[.]/ (dot) /'