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Diffstat (limited to 'doc/gawk.info')
| -rw-r--r-- | doc/gawk.info | 1107 |
1 files changed, 565 insertions, 542 deletions
diff --git a/doc/gawk.info b/doc/gawk.info index 16ff7247..88eae820 100644 --- a/doc/gawk.info +++ b/doc/gawk.info @@ -3368,8 +3368,35 @@ File: gawk.info, Node: Invoking Summary, Prev: Undocumented, Up: Invoking Gaw 2.11 Summary ============ - * Use either 'awk 'PROGRAM' FILES' or 'awk -f PROGRAM-FILE FILES' to - run 'awk'. + * 'gawk' parses arguments on the command line, left to right, to + determine if they should be treated as options or as non-option + arguments. + + * 'gawk' recognizes several options which control its operation, as + described in *note Options::. All options begin with '-'. + + * Any argument that is not recognized as an option is treated as a + non-option argument, even if it begins with '-'. + + - However, when an option itself requires an argument, and the + option is separated from that argument on the command line by + at least one space, the space is ignored, and the argument is + considered to be related to the option. Thus, in the + invocation, 'gawk -F x', the 'x' is treated as belonging to + the '-F' option, not as a separate non-option argument. + + * Once 'gawk' finds a non-option argument, it stops looking for + options. Therefore, all following arguments are also non-option + arguments, even if they resemble recognized options. + + * If no '-e' or '-f' options are present, 'gawk' expects the program + text to be in the first non-option argument. + + * All non-option arguments, except program text provided in the first + non-option argument, are placed in 'ARGV' as explained in *note + ARGC and ARGV::, and are processed as described in *note Other + Arguments::. Adjusting 'ARGC' and 'ARGV' affects how 'awk' + processes input. * The three standard options for all versions of 'awk' are '-f', '-F', and '-v'. 'gawk' supplies these and many others, as well as @@ -3380,10 +3407,6 @@ File: gawk.info, Node: Invoking Summary, Prev: Undocumented, Up: Invoking Gaw as variable assignments to be performed at that point in processing the input. - * All nonoption command-line arguments, excluding the program text, - are placed in the 'ARGV' array. Adjusting 'ARGC' and 'ARGV' - affects how 'awk' processes input. - * You can use a single minus sign ('-') to refer to standard input on the command line. 'gawk' also lets you use the special file name '/dev/stdin'. @@ -36978,541 +37001,541 @@ Node: Loading Shared Libraries155547 Node: Obsolete156975 Node: Undocumented157667 Node: Invoking Summary157964 -Node: Regexp159624 -Node: Regexp Usage161078 -Node: Escape Sequences163115 -Node: Regexp Operators169347 -Node: Regexp Operator Details169832 -Ref: Regexp Operator Details-Footnote-1176264 -Node: Interval Expressions176411 -Ref: Interval Expressions-Footnote-1177846 -Node: Bracket Expressions177944 -Ref: table-char-classes180420 -Node: Leftmost Longest183746 -Node: Computed Regexps185049 -Node: GNU Regexp Operators188476 -Node: Case-sensitivity192155 -Ref: Case-sensitivity-Footnote-1195021 -Ref: Case-sensitivity-Footnote-2195256 -Node: Regexp Summary195364 -Node: Reading Files196830 -Node: Records199099 -Node: awk split records200174 -Node: gawk split records205449 -Ref: gawk split records-Footnote-1210035 -Node: Fields210072 -Node: Nonconstant Fields212813 -Ref: Nonconstant Fields-Footnote-1215049 -Node: Changing Fields215253 -Node: Field Separators221284 -Node: Default Field Splitting223982 -Node: Regexp Field Splitting225100 -Node: Single Character Fields228453 -Node: Command Line Field Separator229513 -Node: Full Line Fields232731 -Ref: Full Line Fields-Footnote-1234253 -Ref: Full Line Fields-Footnote-2234299 -Node: Field Splitting Summary234400 -Node: Constant Size236474 -Node: Fixed width data237206 -Node: Skipping intervening240673 -Node: Allowing trailing data241471 -Node: Fields with fixed data242508 -Node: Splitting By Content244026 -Ref: Splitting By Content-Footnote-1247676 -Node: Testing field creation247839 -Node: Multiple Line249464 -Node: Getline255741 -Node: Plain Getline258210 -Node: Getline/Variable260783 -Node: Getline/File261934 -Node: Getline/Variable/File263322 -Ref: Getline/Variable/File-Footnote-1264927 -Node: Getline/Pipe265015 -Node: Getline/Variable/Pipe267719 -Node: Getline/Coprocess268854 -Node: Getline/Variable/Coprocess270121 -Node: Getline Notes270863 -Node: Getline Summary273660 -Ref: table-getline-variants274084 -Node: Read Timeout274832 -Ref: Read Timeout-Footnote-1278738 -Node: Retrying Input278796 -Node: Command-line directories279995 -Node: Input Summary280901 -Node: Input Exercises284073 -Node: Printing284507 -Node: Print286341 -Node: Print Examples287798 -Node: Output Separators290578 -Node: OFMT292595 -Node: Printf293951 -Node: Basic Printf294736 -Node: Control Letters296310 -Node: Format Modifiers301474 -Node: Printf Examples307489 -Node: Redirection309975 -Node: Special FD316816 -Ref: Special FD-Footnote-1319984 -Node: Special Files320058 -Node: Other Inherited Files320675 -Node: Special Network321676 -Node: Special Caveats322536 -Node: Close Files And Pipes323485 -Ref: table-close-pipe-return-values330392 -Ref: Close Files And Pipes-Footnote-1331205 -Ref: Close Files And Pipes-Footnote-2331353 -Node: Nonfatal331505 -Node: Output Summary333843 -Node: Output 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-Node: Comparison Operators388883 -Ref: table-relational-ops389302 -Node: POSIX String Comparison392797 -Ref: POSIX String Comparison-Footnote-1394492 -Ref: POSIX String Comparison-Footnote-2394631 -Node: Boolean Ops394715 -Ref: Boolean Ops-Footnote-1399197 -Node: Conditional Exp399289 -Node: Function Calls401025 -Node: Precedence404902 -Node: Locales408561 -Node: Expressions Summary410193 -Node: Patterns and Actions412766 -Node: Pattern Overview413886 -Node: Regexp Patterns415563 -Node: Expression Patterns416105 -Node: Ranges419886 -Node: BEGIN/END422994 -Node: Using BEGIN/END423755 -Ref: Using BEGIN/END-Footnote-1426491 -Node: I/O And BEGIN/END426597 -Node: BEGINFILE/ENDFILE428911 -Node: Empty431824 -Node: Using Shell Variables432141 -Node: Action Overview434415 -Node: Statements436740 -Node: If Statement438588 -Node: While Statement440083 -Node: Do Statement442111 -Node: For Statement443259 -Node: Switch Statement446430 -Node: Break Statement448816 -Node: Continue Statement450908 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Functions-Footnote-1660788 -Ref: Ordinal Functions-Footnote-2661040 -Node: Join Function661250 -Ref: Join Function-Footnote-1663020 -Node: Getlocaltime Function663220 -Node: Readfile Function666962 -Node: Shell Quoting668939 -Node: Data File Management670340 -Node: Filetrans Function670972 -Node: Rewind Function675068 -Node: File Checking676977 -Ref: File Checking-Footnote-1678311 -Node: Empty Files678512 -Node: Ignoring Assigns680491 -Node: Getopt Function682041 -Ref: Getopt Function-Footnote-1693510 -Node: Passwd Functions693710 -Ref: Passwd Functions-Footnote-1702549 -Node: Group Functions702637 -Ref: Group Functions-Footnote-1710535 -Node: Walking Arrays710742 -Node: Library Functions Summary713750 -Node: Library Exercises715156 -Node: Sample Programs715621 -Node: Running Examples716391 -Node: Clones717119 -Node: Cut Program718343 -Node: Egrep Program728272 -Ref: Egrep Program-Footnote-1735784 -Node: Id Program735894 -Node: Split Program739574 -Ref: Split Program-Footnote-1743032 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Info912137 +Node: Miscellaneous Debugger Commands916208 +Node: Readline Support921270 +Node: Limitations922166 +Node: Debugging Summary924720 +Node: Namespaces925999 +Node: Global Namespace927110 +Node: Qualified Names928508 +Node: Default Namespace929507 +Node: Changing The Namespace930248 +Node: Naming Rules931862 +Node: Internal Name Management933710 +Node: Namespace Example934752 +Node: Namespace And Features937314 +Node: Namespace Summary938749 +Node: Arbitrary Precision Arithmetic940226 +Node: Computer Arithmetic941713 +Ref: table-numeric-ranges945479 +Ref: table-floating-point-ranges945972 +Ref: Computer Arithmetic-Footnote-1946630 +Node: Math Definitions946687 +Ref: table-ieee-formats950003 +Ref: Math Definitions-Footnote-1950606 +Node: MPFR features950711 +Node: FP Math Caution952429 +Ref: FP Math Caution-Footnote-1953501 +Node: Inexactness of computations953870 +Node: Inexact representation954830 +Node: Comparing FP Values956190 +Node: Errors accumulate957431 +Node: Getting 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Installation1205633 +Node: PC Installation1206093 +Node: PC Binary Installation1206931 +Node: PC Compiling1207366 +Node: PC Using1208483 +Node: Cygwin1212036 +Node: MSYS1213135 +Node: VMS Installation1213636 +Node: VMS Compilation1214427 +Ref: VMS Compilation-Footnote-11215656 +Node: VMS Dynamic Extensions1215714 +Node: VMS Installation Details1217399 +Node: VMS Running1219652 +Node: VMS GNV1223931 +Node: VMS Old Gawk1224666 +Node: Bugs1225137 +Node: Bug address1225800 +Node: Usenet1228782 +Node: Maintainers1229786 +Node: Other Versions1231047 +Node: Installation summary1238135 +Node: Notes1239337 +Node: Compatibility Mode1240131 +Node: Additions1240913 +Node: Accessing The Source1241838 +Node: Adding Code1243275 +Node: New Ports1249494 +Node: Derived Files1253869 +Ref: Derived Files-Footnote-11259529 +Ref: Derived Files-Footnote-21259564 +Ref: Derived Files-Footnote-31260162 +Node: Future Extensions1260276 +Node: Implementation Limitations1260934 +Node: Extension Design1262117 +Node: Old Extension Problems1263261 +Ref: Old Extension Problems-Footnote-11264779 +Node: Extension New Mechanism Goals1264836 +Ref: Extension New Mechanism Goals-Footnote-11268200 +Node: Extension Other Design Decisions1268389 +Node: Extension Future Growth1270502 +Node: Notes summary1271338 +Node: Basic Concepts1272496 +Node: Basic High Level1273177 +Ref: figure-general-flow1273459 +Ref: figure-process-flow1274144 +Ref: Basic High Level-Footnote-11277445 +Node: Basic Data Typing1277630 +Node: Glossary1280958 +Node: Copying1312796 +Node: GNU Free Documentation License1350339 +Node: Index1375459 End Tag Table |