projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 8340f87c BJ |
1 | .bp |
| 2 | .SH | |
| 3 | Appendix\ A\ -\ Grammar | |
| 4 | .LP | |
| 5 | .DS | |
| 6 | \fIitem: word | |
| 7 | input-output | |
| 8 | name = value | |
| 9 | .sp 0.8 | |
| 10 | simple-command: item | |
| 11 | simple-command item | |
| 12 | .sp 0.8 | |
| 13 | command: simple-command | |
| 14 | \fB( \fIcommand-list \fB) | |
| 15 | \fB{ \fIcommand-list \fB} | |
| 16 | \fBfor \fIname \fBdo \fIcommand-list \fBdone | |
| 17 | \fBfor \fIname \fBin \fIword \*(ZZ \fBdo \fIcommand-list \fBdone | |
| 18 | \fBwhile \fIcommand-list \fBdo \fIcommand-list \fBdone | |
| 19 | \fBuntil \fIcommand-list \fBdo \fIcommand-list \fBdone | |
| 20 | \fBcase \fIword \fBin \fIcase-part \*(ZZ \fBesac | |
| 21 | \fBif \fIcommand-list \fBthen \fIcommand-list \fIelse-part \fBfi | |
| 22 | .sp 0.8 | |
| 23 | \fIpipeline: command | |
| 24 | pipeline \fB\*(VT\fI command | |
| 25 | .sp 0.8 | |
| 26 | andor: pipeline | |
| 27 | andor \fB&&\fI pipeline | |
| 28 | andor \fB\*(VT\*(VT\fI pipeline | |
| 29 | .sp 0.8 | |
| 30 | command-list: andor | |
| 31 | command-list \fB;\fI | |
| 32 | command-list \fB&\fI | |
| 33 | command-list \fB;\fI andor | |
| 34 | command-list \fB&\fI andor | |
| 35 | .sp 0.8 | |
| 36 | input-output: \fB> \fIfile | |
| 37 | \fB< \fIfile | |
| 38 | \fB\*(AP \fIword | |
| 39 | \fB\*(HE \fIword | |
| 40 | .sp 0.8 | |
| 41 | file: word | |
| 42 | \fB&\fI digit | |
| 43 | \fB&\fI \(mi | |
| 44 | .sp 0.8 | |
| 45 | case-part: pattern\fB ) \fIcommand-list\fB ;; | |
| 46 | .sp 0.8 | |
| 47 | \fIpattern: word | |
| 48 | pattern \fB\*(VT\fI word | |
| 49 | .sp 0.8 | |
| 50 | \fIelse-part: \fBelif \fIcommand-list\fB then\fI command-list else-part\fP | |
| 51 | \fBelse \fIcommand-list\fI | |
| 52 | empty | |
| 53 | .sp 0.8 | |
| 54 | empty: | |
| 55 | .sp 0.8 | |
| 56 | word: \fRa sequence of non-blank characters\fI | |
| 57 | .sp 0.8 | |
| 58 | name: \fRa sequence of letters, digits or underscores starting with a letter\fI | |
| 59 | .sp 0.8 | |
| 60 | digit: \fB0 1 2 3 4 5 6 7 8 9\fP | |
| 61 | .DE | |
| 62 | .LP | |
| 63 | .bp | |
| 64 | .SH | |
| 65 | Appendix\ B\ -\ Meta-characters\ and\ Reserved\ Words | |
| 66 | .LP | |
| 67 | a) syntactic | |
| 68 | .RS | |
| 69 | .IP \fB\*(VT\fR 6 | |
| 70 | pipe symbol | |
| 71 | .IP \fB&&\fR 6 | |
| 72 | `andf' symbol | |
| 73 | .IP \fB\*(VT\*(VT\fR 6 | |
| 74 | `orf' symbol | |
| 75 | .IP \fB;\fP 6 | |
| 76 | command separator | |
| 77 | .IP \fB;;\fP 6 | |
| 78 | case delimiter | |
| 79 | .IP \fB&\fP 6 | |
| 80 | background commands | |
| 81 | .IP \fB(\ )\fP 6 | |
| 82 | command grouping | |
| 83 | .IP \fB<\fP 6 | |
| 84 | input redirection | |
| 85 | .IP \fB\*(HE\fP 6 | |
| 86 | input from a here document | |
| 87 | .IP \fB>\fP 6 | |
| 88 | output creation | |
| 89 | .IP \fB\*(AP\fP 6 | |
| 90 | output append | |
| 91 | .sp 2 | |
| 92 | .RE | |
| 93 | .LP | |
| 94 | b) patterns | |
| 95 | .RS | |
| 96 | .IP \fB\*(ST\fP 6 | |
| 97 | match any character(s) including none | |
| 98 | .IP \fB?\fP 6 | |
| 99 | match any single character | |
| 100 | .IP \fB[...]\fP 6 | |
| 101 | match any of the enclosed characters | |
| 102 | .sp 2 | |
| 103 | .RE | |
| 104 | .LP | |
| 105 | c) substitution | |
| 106 | .RS | |
| 107 | .IP \fB${...}\fP 6 | |
| 108 | substitute shell variable | |
| 109 | .IP \fB\`...\`\fP 6 | |
| 110 | substitute command output | |
| 111 | .sp 2 | |
| 112 | .RE | |
| 113 | .LP | |
| 114 | d) quoting | |
| 115 | .RS | |
| 116 | .IP \fB\e\fP 6 | |
| 117 | quote the next character | |
| 118 | .IP \fB\'...\'\fP 6 | |
| 119 | quote the enclosed characters except for \' | |
| 120 | .IP \fB"\&..."\fR 6 | |
| 121 | quote the enclosed characters except | |
| 122 | for \fB$ \` \e "\fP | |
| 123 | .sp 2 | |
| 124 | .RE | |
| 125 | .LP | |
| 126 | e) reserved words | |
| 127 | .DS | |
| 128 | .ft B | |
| 129 | if then else elif fi | |
| 130 | case in esac | |
| 131 | for while until do done | |
| 132 | { } | |
| 133 | .ft | |
| 134 | .DE |