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Annotation of cci/usr/src/man/man1/sed.1, revision 1.1

1.1     ! root        1: .TH SED 1  "18 January 1983"
        !             2: .SH NAME
        !             3: sed \- stream editor
        !             4: .SH SYNOPSIS
        !             5: .B sed
        !             6: [
        !             7: .B \-n
        !             8: ]
        !             9: [
        !            10: .B \-e
        !            11: script ] [
        !            12: .B \-f
        !            13: sfile ] [ file ] ...
        !            14: .SH DESCRIPTION
        !            15: .I Sed
        !            16: copies the named
        !            17: .I files
        !            18: (standard input default) to the standard output,
        !            19: edited according to a script of commands.
        !            20: The
        !            21: .B \-f
        !            22: option causes the script to be taken from file
        !            23: .IR sfile ;
        !            24: these options accumulate.
        !            25: If there is just one
        !            26: .B \-e
        !            27: option and no
        !            28: .BR \-f 's,
        !            29: the flag
        !            30: .B \-e
        !            31: may be omitted.
        !            32: The
        !            33: .B \-n
        !            34: option suppresses the default output.
        !            35: .PP
        !            36: A script consists of editing commands, one per line,
        !            37: of the following form:
        !            38: .IP
        !            39: [address [, address] ] function [arguments]
        !            40: .PP
        !            41: In normal operation
        !            42: .I sed
        !            43: cyclically copies a line of input into a
        !            44: .I pattern space
        !            45: (unless there is something left after
        !            46: a `D' command),
        !            47: applies in sequence
        !            48: all commands whose
        !            49: .I addresses
        !            50: select that pattern space,
        !            51: and at the end of the script copies the pattern space
        !            52: to the standard output (except under
        !            53: .BR \-n )
        !            54: and deletes the pattern space.
        !            55: .PP
        !            56: An
        !            57: .I address
        !            58: is either a decimal number that counts
        !            59: input lines cumulatively across files, a `$' that
        !            60: addresses the last line of input, or a context address,
        !            61: `/regular expression/', in the style of
        !            62: .IR ed (1)
        !            63: modified thus:
        !            64: .IP
        !            65: The escape sequence `\en' matches a
        !            66: newline embedded in the pattern space.
        !            67: .PP
        !            68: A command line with no addresses selects every pattern space.
        !            69: .PP
        !            70: A command line with
        !            71: one address selects each pattern space that matches the address.
        !            72: .PP
        !            73: A command line with
        !            74: two addresses selects the inclusive range from the first
        !            75: pattern space that matches the first address through
        !            76: the next pattern space that matches 
        !            77: the second.
        !            78: (If the second address is a number less than or equal
        !            79: to the line number first selected, only one
        !            80: line is selected.)
        !            81: Thereafter the process is repeated, looking again for the
        !            82: first address.
        !            83: .PP
        !            84: Editing commands can be applied only to non-selected pattern
        !            85: spaces by use of the negation function `!' (below).
        !            86: .PP
        !            87: In the following list of functions the 
        !            88: maximum number of permissible addresses
        !            89: for each function is indicated in parentheses.
        !            90: .PP
        !            91: An argument denoted
        !            92: .I text
        !            93: consists of one or more lines,
        !            94: all but the last of which end with `\e' to hide the
        !            95: newline.
        !            96: Backslashes in text are treated like backslashes
        !            97: in the replacement string of an `s' command,
        !            98: and may be used to protect initial blanks and tabs
        !            99: against the stripping that is done on
        !           100: every script line.
        !           101: .PP
        !           102: An argument denoted
        !           103: .I rfile
        !           104: or
        !           105: .I wfile
        !           106: must terminate the command
        !           107: line and must be preceded by exactly one blank.
        !           108: Each
        !           109: .I wfile
        !           110: is created before processing begins.
        !           111: There can be at most 10 distinct
        !           112: .I wfile
        !           113: arguments.
        !           114: .TP
        !           115: (1)\|a\e
        !           116: .br
        !           117: .ns
        !           118: .TP
        !           119: .I text
        !           120: .br
        !           121: Append.
        !           122: Place
        !           123: .I text
        !           124: on the output before
        !           125: reading the next input line.
        !           126: .TP
        !           127: .RI (2)\|b " label"
        !           128: Branch to the `:' command bearing the
        !           129: .IR label .
        !           130: If
        !           131: .I label
        !           132: is empty, branch to the end of the script.
        !           133: .TP
        !           134: (2)\|c\e
        !           135: .br
        !           136: .ns
        !           137: .TP
        !           138: .I text
        !           139: .br
        !           140: Change.
        !           141: Delete the pattern space.
        !           142: With 0 or 1 address or at the end of a 2-address range, place
        !           143: .I text
        !           144: on the output.
        !           145: Start the next cycle.
        !           146: .TP
        !           147: (2)\|d
        !           148: Delete the pattern space.
        !           149: Start the next cycle.
        !           150: .TP
        !           151: (2)\|D
        !           152: Delete the initial segment of the 
        !           153: pattern space through the first newline.
        !           154: Start the next cycle.
        !           155: .TP
        !           156: (2)\|g
        !           157: Replace the contents of the pattern space
        !           158: by the contents of the hold space.
        !           159: .TP
        !           160: (2)\|G
        !           161: Append the contents of the hold space to the pattern space.
        !           162: .TP
        !           163: (2)\|h
        !           164: Replace the contents of the hold space by the contents of the pattern space.
        !           165: .TP
        !           166: (2)\|H
        !           167: Append the contents of the pattern space to the hold space.
        !           168: .TP
        !           169: (1)\|i\e
        !           170: .br
        !           171: .ns
        !           172: .TP
        !           173: .I text
        !           174: .br
        !           175: Insert.
        !           176: Place
        !           177: .I text
        !           178: on the standard output.
        !           179: .TP
        !           180: (2)\|n
        !           181: Copy the pattern space to the standard output.
        !           182: Replace the pattern space with the next line of input.
        !           183: .TP
        !           184: (2)\|N
        !           185: Append the next line of input to the pattern space
        !           186: with an embedded newline.
        !           187: (The current line number changes.)
        !           188: .TP
        !           189: (2)\|p
        !           190: Print.
        !           191: Copy the pattern space to the standard output.
        !           192: .TP
        !           193: (2)\|P
        !           194: Copy the initial segment of the pattern space through
        !           195: the first newline to the standard output.
        !           196: .TP
        !           197: (1)\|q
        !           198: Quit.
        !           199: Branch to the end of the script.
        !           200: Do not start a new cycle.
        !           201: .TP
        !           202: .RI (2)\|r " rfile"
        !           203: Read the contents of
        !           204: .IR rfile .
        !           205: Place them on the output before reading
        !           206: the next input line.
        !           207: .TP
        !           208: .RI (2)\|s /regular\ expression/replacement/flags
        !           209: Substitute the
        !           210: .I replacement
        !           211: string for instances of the
        !           212: .I regular expression
        !           213: in the pattern space.
        !           214: Any character may be used instead of `/'.
        !           215: For a fuller description see
        !           216: .IR ed (1).
        !           217: .I Flags
        !           218: is zero or more of
        !           219: .RS
        !           220: .TP
        !           221: g
        !           222: Global.
        !           223: Substitute for all nonoverlapping instances of the
        !           224: .I regular expression
        !           225: rather than just the
        !           226: first one.
        !           227: .TP
        !           228: p
        !           229: Print the pattern space if a replacement was made.
        !           230: .TP
        !           231: .RI w " wfile"
        !           232: Write.
        !           233: Append the pattern space to
        !           234: .I wfile
        !           235: if a replacement
        !           236: was made.
        !           237: .RE
        !           238: .TP
        !           239: .RI (2)\|t " label"
        !           240: Test.
        !           241: Branch to the `:' command bearing the
        !           242: .I label
        !           243: if any
        !           244: substitutions have been made since the most recent
        !           245: reading of an input line or execution of a `t'.
        !           246: If 
        !           247: .I label
        !           248: is empty, branch to the end of the script.
        !           249: .TP
        !           250: .RI (2)\|w " wfile"
        !           251: Write.
        !           252: Append the pattern space to
        !           253: .IR wfile .
        !           254: .TP
        !           255: .RI (2)\|x
        !           256: Exchange the contents of the pattern and hold spaces.
        !           257: .TP
        !           258: .RI (2)\|y /string1/string2/
        !           259: Transform.
        !           260: Replace all occurrences of characters in
        !           261: .I string1
        !           262: with the corresponding character in
        !           263: .I string2.
        !           264: The lengths of
        !           265: .I
        !           266: string1
        !           267: and
        !           268: .I string2
        !           269: must be equal.
        !           270: .TP
        !           271: .RI (2)! " function"
        !           272: Don't.
        !           273: Apply the
        !           274: .I function
        !           275: (or group, if
        !           276: .I function
        !           277: is `{') only to lines
        !           278: .I not
        !           279: selected by the address(es).
        !           280: .TP
        !           281: .RI (0)\|: " label"
        !           282: This command does nothing; it bears a
        !           283: .I label
        !           284: for `b' and `t' commands to branch to.
        !           285: .TP
        !           286: (1)\|=
        !           287: Place the current line number on the standard output as a line.
        !           288: .TP
        !           289: (2)\|{
        !           290: Execute the following commands through a matching `}'
        !           291: only when the pattern space is selected.
        !           292: .TP
        !           293: (0)\|
        !           294: An empty command is ignored.
        !           295: .SH SEE ALSO
        !           296: ed(1), grep(1), awk(1), lex(1)

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