Shell Sintaxes completas representadas por Diagrama Sintático - Diagrama de Sintaxe (ver convenções) ou BNF (ver convenções). Diagrama Sintático - Diagrama de Sintaxe | Diagrama Sintático - Diagrama de Sintaxe e BNF | BNF complete_command : list separator? list : and_or {separator_op and_or} and_or : pipeline {and_or ('&&' | '||') linebreak pipeline} pipeline : '!'? pipe_sequence pipe_sequence : command {('|' linebreak) command} command : simple_command | compound_command redirect_list? | function_definition compound_command : brace_group | subshell | for_clause | case_clause | if_clause | while_clause | until_clause subshell : '(' compound_list ')' compound_list : newline_list? term separator? term : and_or {separator and_or} for_clause : for name linebreak [in [wordlist] sequential_sep] do_group wordlist : wordlist: WORD+ case_clause : case WORD linebreak in linebreak (case_list|case_list_ns|'') esac case_list_ns : case_list? case_item_ns case_list : case_item+ case_item_ns : '('? pattern ')'compound_list? linebreak case_item : '('? pattern ')' (linebreak|compound_list) ';;' linebreak pattern : WORD { '|' WORD } if_clause : if compound_list then compound_list [{elif compound_list then} else compound_list] fi while_clause : while compound_list do_group; until_clause : until_clause: until compound_list do_group; function_definition : fname '()' linebreak function_body function_body : compound_command redirect_list? fname : NAME brace_group : '{' compound_list '}' do_group : do compound_list done simple_command : cmd_prefix? cmd_name cmd_suffix? cmd_name : WORD cmd_prefix : cmd_prefix: (io_redirect | ASSIGNMENT_WORD)+ cmd_suffix : ( io_redirect | WORD)+ redirect_list : io_redirect+ io_redirect : IO_NUMBER?( io_file | io_here) io_file : ('<' | '<&' | '>' | '>&' | '>>' | '<>' | '>|') filename filename : WORD io_here : ('<<' | '<<-') here_end here_end : WORD newline_list : newline_list? NEWLINE linebreak : newline_list | '' separator_op : '&' | ';' separator : separator_op linebreak | newline_list sequential_sep : ';' linebreak | newline_list