[] On the regular expression. $cat TestA Edasae AlicaChebba 973-555-2015 Ed BarbaraSwingle 201-555-9257 Dfadfefe dsa $cat TestA |sed 's/e*/+++/g' +++d+++a+++s+++a+++ Showed : +++A+++l+++i+++c+++a+++C+++h+++b+++b+++a+++ +++9+++7+++3+++-+++5+++5+++5+++-+++2+++0+++1+++5+++ + + + + + + + + + +++d+++ +++B+++a+++r+++b+++a+++r+++a+++S+++w+++i+++n+++g+++l+++ +++2+++0+++1+++-+++5+++5+++5+++-+++9+++2+++5+++7+++ +++d+++f+++a+++d+++f+++f+++ +++d+++s+++a+++ + + + + + + $cat TA |sed 's/[e*]/+++/g' +++dasa+++ AlicaCh+++bba 973-555-2015 +++d BarbaraSwingl+++ 201-555-9257 Dfadf+++f+++ dsa [] Will arise only with the desired results, I know that it is the matching string [] group have not [] what is the meaning of the results, see instructions! Find some introductory look at the bars on the regular expression, free to novice navigation With the Q! Puzzled. Which explained the mastermind of hope! [ Closed window ]