.bp.SHAppendix\ A\ -\ Grammar.LP.DS\fIitem:		word		input-output		name = value.sp 0.8simple-command: item		simple-command item.sp 0.8command:	simple-command		\fB( \fIcommand-list \fB)		\fB{ \fIcommand-list \fB}		\fBfor \fIname \fBdo \fIcommand-list \fBdone		\fBfor \fIname \fBin \fIword \*(ZZ \fBdo \fIcommand-list \fBdone		\fBwhile \fIcommand-list \fBdo \fIcommand-list \fBdone		\fBuntil \fIcommand-list \fBdo \fIcommand-list \fBdone		\fBcase \fIword \fBin \fIcase-part \*(ZZ \fBesac		\fBif \fIcommand-list \fBthen \fIcommand-list \fIelse-part \fBfi.sp 0.8\fIpipeline:		command		pipeline \fB\*(VT\fI command.sp 0.8andor:		pipeline		andor \fB&&\fI pipeline		andor \fB\*(VT\*(VT\fI pipeline.sp 0.8command-list:	andor		command-list \fB;\fI		command-list \fB&\fI		command-list \fB;\fI andor		command-list \fB&\fI andor.sp 0.8input-output:	\fB> \fIfile		\fB< \fIfile		\fB\*(AP \fIword		\fB\*(HE \fIword.sp 0.8file:		word		\fB&\fI digit		\fB&\fI \(mi.sp 0.8case-part:	pattern\fB ) \fIcommand-list\fB ;;.sp 0.8\fIpattern:		word		pattern \fB\*(VT\fI word.sp 0.8\fIelse-part:	\fBelif \fIcommand-list\fB then\fI command-list else-part\fP		\fBelse \fIcommand-list\fI		empty.sp 0.8empty:.sp 0.8word:		\fRa sequence of non-blank characters\fI.sp 0.8name:		\fRa sequence of letters, digits or underscores starting with a letter\fI.sp 0.8digit:		\fB0 1 2 3 4 5 6 7 8 9\fP.DE.LP.bp.SHAppendix\ B\ -\ Meta-characters\ and\ Reserved\ Words.LPa) syntactic.RS.IP \fB\*(VT\fR 6pipe symbol.IP \fB&&\fR 6`andf' symbol.IP \fB\*(VT\*(VT\fR 6`orf' symbol.IP \fB;\fP 6command separator.IP \fB;;\fP 6case delimiter.IP \fB&\fP 6background commands.IP \fB(\ )\fP 6command grouping.IP \fB<\fP 6input redirection.IP \fB\*(HE\fP 6input from a here document.IP \fB>\fP 6output creation.IP \fB\*(AP\fP 6output append.sp 2.RE.LPb) patterns.RS.IP \fB\*(ST\fP 6match any character(s) including none.IP \fB?\fP 6match any single character.IP \fB[...]\fP 6match any of the enclosed characters.sp 2.RE.LPc) substitution.RS.IP \fB${...}\fP 6substitute shell variable.IP \fB\`...\`\fP 6substitute command output.sp 2.RE.LPd) quoting.RS.IP \fB\e\fP 6quote the next character.IP \fB\'...\'\fP 6quote the enclosed characters except for \'.IP \fB"\&..."\fR 6quote the enclosed characters exceptfor \fB$ \` \e "\fP.sp 2.RE.LPe) reserved words.DS.ft Bif then else elif ficase in esacfor while until do done{  }.ft.DE