.CD "gres \(en grep and substitute"
.SX "gres\fR [\fB\(eng\fR] \fIpattern \fIstring\fR [\fIfile\fR] ..."
.FL "\(eng" "Only change the first occurrence per line"
.EX "gres bug insect" "Replace \fIbug\fP with \fIinsect\fP"
.EX "gres \*(SQ^[A\(enZ]+$\*(SQ CAPS" "Replace capital-only lines with \fICAPS\fP"
.PP
.I Gres
is a poor man's
.I sed .
It looks for the same patterns as
.I grep ,
and replaces each one by the given string.



.SP 1.5