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Annotation of coherent/a/usr/man/COHERENT/sed, revision 1.1

1.1     ! root        1: 
        !             2: 
        !             3: sed                          Command                          sed
        !             4: 
        !             5: 
        !             6: 
        !             7: 
        !             8: Stream editor
        !             9: 
        !            10: sseedd [ -nn ] [-ee _c_o_m_m_a_n_d_s] [-ff _s_c_r_i_p_t] ... _f_i_l_e ...
        !            11: 
        !            12: sed is  a non-interactive text editor.  It  reads input from each
        !            13: file, or from  the standard input if no file  is named.  It edits
        !            14: the input  according to commands  given in the  commands argument
        !            15: and the  script files.  It  then writes the edited  text onto the
        !            16: standard output.
        !            17: 
        !            18: sed  resembles the  interactive editor ed,  but its  operation is
        !            19: fundamentally different.  sed  normally edits one line at a time,
        !            20: so it may be used to  edit very large files.  After it constructs
        !            21: a list  of commands from  its commands and  script arguments, sed
        !            22: reads the  input one line at  a time into a  work area.  Then sed
        !            23: executes  each command  that applies  to  the line,  as explained
        !            24: below.  Finally,  it copies the work area  to the standard output
        !            25: (unless the  -n option is  specified), erases the  work area, and
        !            26: reads the next input line.
        !            27: 
        !            28: ***** Line Identifiers *****
        !            29: 
        !            30: sed  identifies input  lines by  integer line  numbers, beginning
        !            31: with  one for  the first  line of the  first file  and continuing
        !            32: through each successive  file.  The following special forms iden-
        !            33: tify lines:
        !            34: 
        !            35: nn    A decimal number n addresses the nth line of the input.
        !            36: 
        !            37: .    A period `.' addresses the current input line.
        !            38: 
        !            39: $    A dollar sign `$' addresses the last line of input.
        !            40: 
        !            41: /ppaatttteerrnn/
        !            42:      A pattern  enclosed within slashes addresses  the next input
        !            43:      line that  contains pattern.  Patterns,  also called regular
        !            44:      expressions, are described in detail below.
        !            45: 
        !            46: ***** Commands *****
        !            47: 
        !            48: Each command  must be on  a separate line.  Most  commands may be
        !            49: optionally preceded  by a line identifier  (abbreviated as [n] in
        !            50: the command  summary below) or by  two-line identifiers separated
        !            51: by  a comma  (abbreviated  as [n[,m]]).   If  no line  identifier
        !            52: precedes a command, sed  applies the command to every input line.
        !            53: If one  line identifier precedes a command,  sed applies the com-
        !            54: mand to each input  line selected by the identifier.  If two-line
        !            55: identifiers precede  a command, sed  begins to apply  the command
        !            56: when an  input line is  selected by the first,  and continues ap-
        !            57: plying it through an input line selected by the second.
        !            58: 
        !            59: sed recognizes the following commands:
        !            60: 
        !            61: 
        !            62: 
        !            63: 
        !            64: COHERENT Lexicon                                           Page 1
        !            65: 
        !            66: 
        !            67: 
        !            68: 
        !            69: sed                          Command                          sed
        !            70: 
        !            71: 
        !            72: 
        !            73: [_n]= Output the current input line number.
        !            74: 
        !            75: [_n[,_m]]!_c_o_m_m_a_n_d
        !            76:      Apply command to each line not identified by [n[,m]].
        !            77: 
        !            78: [_n[,_m]]{_c_o_m_m_a_n_d...}
        !            79:      Execute each enclosed command on the given lines.
        !            80: 
        !            81: :_l_a_b_e_l
        !            82:      Define label for use in branch or test command.
        !            83: 
        !            84: [_n]aa\
        !            85:      Append new text after given line.  New text is terminated by
        !            86:      any line not ending in `\'.
        !            87: 
        !            88: bb [_l_a_b_e_l]
        !            89:      Branch to label, which must be defined in a `:' command.  If
        !            90:      label is omitted, branch to end of command script.
        !            91: 
        !            92: [_n[,_m]]cc\
        !            93:      Change specified lines to new text and proceed with next in-
        !            94:      put line.  New text is  terminated by any line not ending in
        !            95:      `\'.
        !            96: 
        !            97: [_n[,_m]]dd
        !            98:      Delete specified lines and proceed with next input line.
        !            99: 
        !           100: [_n[,_m]]DD
        !           101:      Delete first  line in work area and  proceed with next input
        !           102:      line.
        !           103: 
        !           104: [_n[,_m]]gg
        !           105:      Copy secondary  work area to work  area, destroying previous
        !           106:      contents.
        !           107: 
        !           108: [_n[,_m]]GG
        !           109:      Append secondary work area to work area.
        !           110: 
        !           111: [_n[,_m]]hh
        !           112:      Copy work area  to secondary work area,  destroying previous
        !           113:      contents.
        !           114: 
        !           115: [_n[,_m]]HH
        !           116:      Append work area to secondary work area.
        !           117: 
        !           118: [_n]ii\
        !           119:      Insert new  text before given line.   New text is terminated
        !           120:      by any line not ending in `\'.
        !           121: 
        !           122: [_n[,_m]]ll
        !           123:      Print selected lines, interpreting non-graphic characters.
        !           124: 
        !           125: [_n[,_m]]nn
        !           126:      Print the work area and replace it with the next input line.
        !           127: 
        !           128: 
        !           129: 
        !           130: COHERENT Lexicon                                           Page 2
        !           131: 
        !           132: 
        !           133: 
        !           134: 
        !           135: sed                          Command                          sed
        !           136: 
        !           137: 
        !           138: 
        !           139: [_n[,_m]]NN
        !           140:      Append next input line preceded by a newline to work area.
        !           141: 
        !           142: [_n[,_m]]pp
        !           143:      Print work area.
        !           144: 
        !           145: [_n[,_m]]PP
        !           146:      Print first line of work area.
        !           147: 
        !           148: [_n]qq Quit without reading any more input.
        !           149: 
        !           150: [_n]rr _f_i_l_e
        !           151:      Copy file to output.
        !           152: 
        !           153: [_n[,_m]]ss[_k]/_p_a_t_t_e_r_n_1/_p_a_t_t_e_r_n_2/[gg][pp][ww _f_i_l_e]
        !           154:      Search for  pattern1 and substitute pattern2  for kth occur-
        !           155:      rence (default, first).   If optional g is given, substitute
        !           156:      all occurrences.   If optional p is  given, print the resul-
        !           157:      ting  line.  If  optional w is  given, append  the resulting
        !           158:      line to file.  Patterns are described in detail below.
        !           159: 
        !           160: [_n[,_m]]tt[_l_a_b_e_l]
        !           161:      Test  if substitutions  have been  made.   If so,  branch to
        !           162:      label, which must be defined  in a `:' command.  If label is
        !           163:      omitted, branch to end of command script.
        !           164: 
        !           165: [_n[,_m]]ww _f_i_l_e
        !           166:      Append lines to file.
        !           167: 
        !           168: [_n[,_m]] xx
        !           169:      Exchange the work area and the secondary work area.
        !           170: 
        !           171: [_n[,_m]]yy/_c_h_a_r_s/_r_e_p_l_a_c_e_m_e_n_t_s/
        !           172:      Translate characters  in chars to  the corresponding charac-
        !           173:      ters in replacements.
        !           174: 
        !           175: ***** Patterns *****
        !           176: 
        !           177: Substitution commands and  search specifications may include pat-
        !           178: terns, also  called regular expressions.   Pattern specifications
        !           179: are identical to those  of ed, except that the special characters
        !           180: `\nn' match a newline character in the input.
        !           181: 
        !           182: A  non-special character  in a  pattern matches  itself.  Special
        !           183: characters include the following:
        !           184: 
        !           185: ^    Match beginning of line, unless it appears immediately after
        !           186:      `[' (see below).
        !           187: 
        !           188: $    Match end of line.
        !           189: 
        !           190: \nn   Match the newline character.
        !           191: 
        !           192: .    Match any character except newline.
        !           193: 
        !           194: 
        !           195: 
        !           196: COHERENT Lexicon                                           Page 3
        !           197: 
        !           198: 
        !           199: 
        !           200: 
        !           201: sed                          Command                          sed
        !           202: 
        !           203: 
        !           204: 
        !           205: *    Match zero or more repetitions of preceding character.
        !           206: 
        !           207: [_c_h_a_r_s]
        !           208:      Match any  one of the enclosed chars.   Ranges of letters or
        !           209:      digits may be indicated using `-'.
        !           210: 
        !           211: [^_c_h_a_r_s]
        !           212:      Match any character  except one of the enclosed chars.  Ran-
        !           213:      ges of letters or digits may be indicated using `-'.
        !           214: 
        !           215: \_c   Disregard special meaning of character c.
        !           216: 
        !           217: \(_p_a_t_t_e_r_n\)
        !           218:      Delimit substring pattern; for use with \_d, described below.
        !           219: 
        !           220: In addition, the replacement part pattern2 of the substitute com-
        !           221: mand may also use the following:
        !           222: 
        !           223: &    Insert characters matched by pattern1.
        !           224: 
        !           225: \_d   Insert  substring delimited by dth  occurrence of delimiters
        !           226:      `\(' and `\)', where d is a digit.
        !           227: 
        !           228: ***** Options *****
        !           229: 
        !           230: sed recognizes the following options:
        !           231: 
        !           232: -ee   Next argument gives commands.
        !           233: 
        !           234: -ff   Next argument gives file name of command script.
        !           235: 
        !           236: -nn   Output lines only when explicit p or P commands are given.
        !           237: 
        !           238: ***** See Also *****
        !           239: 
        !           240: commands, ed
        !           241: 
        !           242: 
        !           243: 
        !           244: 
        !           245: 
        !           246: 
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        !           249: 
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        !           261: 
        !           262: COHERENT Lexicon                                           Page 4
        !           263: 
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