sed.1 (4496B)
1 .Dd October 8, 2015 2 .Dt SED 1 3 .Os sbase 4 .Sh NAME 5 .Nm sed 6 .Nd stream editor 7 .Sh SYNOPSIS 8 .Nm 9 .Op Fl nrE 10 .Ar script 11 .Op Ar file ... 12 .Nm 13 .Op Fl nrE 14 .Fl e Ar script 15 .Op Fl e Ar script 16 .Ar ... 17 .Op Fl f Ar scriptfile 18 .Ar ... 19 .Op Ar file ... 20 .Nm 21 .Op Fl nrE 22 .Op Fl e Ar script 23 .Ar ... 24 .Fl f Ar scriptfile 25 .Op Fl f Ar scriptfile 26 .Ar ... 27 .Op Ar file ... 28 .Sh DESCRIPTION 29 .Nm 30 reads line oriented output from 31 .Ar file 32 or stdin, applies the editing commands supplied by 33 .Ar script 34 or 35 .Ar scriptfile 36 and writes the edited stream to stdout. 37 .Sh OPTIONS 38 .Bl -tag -width Ds 39 .It Fl n 40 Suppress default printing at the end of each cycle. 41 .It Fl r E 42 Use extended regular expressions 43 .It Fl e Ar script 44 Append 45 .Ar script 46 to the list of editing commands. 47 .It Fl f Ar scriptfile 48 Append the commands from 49 .Ar scriptfile 50 to the list of editing commands. 51 .El 52 .Sh EXTENDED DESCRIPTION 53 Editing commands take the form: 54 .Pp 55 [address[,address]]function 56 .Pp 57 Commands can be separated by ';' or by a new line. 58 .Pp 59 Multiple functions for the specified address (or address-range) can be enclosed 60 in blocks with '{' and '}': 61 .Pp 62 [address[,address]] { function ; function } 63 .Pp 64 .Ss Addresses 65 Addresses are either blank, a positive decimal integer denoting a line 66 number, the character '$' denoting the last line of input, or a regular 67 expression (in the format 68 .No / Ns 69 .Ar regexp Ns /). 70 A command with no addresses matches every line, one address matches 71 individual lines, and two addresses matches a range of lines from the 72 first to the second address inclusive. 73 .Pp 74 The character '!' may be appended after the addresses, 75 in which case the function is executed only if the addresses 76 .Em don't 77 match. 78 .Pp 79 .Ss Functions 80 .Bl -tag -width Ds 81 .It Ar a Op Ar text 82 Append text to output after end of current cycle. 83 .It Ar b Op Ar label 84 Branch to label. 85 If no label is provided branch to end of script. 86 .It Ar c Op Ar text 87 Change. 88 Delete addressed range and output text after end of current cycle. 89 .It Ar d 90 Delete pattern space and begin next cycle. 91 .It Ar D 92 Delete pattern space up to and including first newline and begin new 93 cycle without reading input. 94 If there is no newline, behave like d. 95 .It Ar g 96 Get. 97 Replace the pattern space with the hold space. 98 .It Ar G 99 Get. 100 Append a newline and the hold space to the pattern space. 101 .It Ar h 102 Hold. 103 Replace the hold space with the pattern space. 104 .It Ar H 105 Hold. 106 Append a newline and the pattern space to the hold space. 107 .It Ar i Op Ar text 108 Insert text in output. 109 .It Ar l 110 List? Write the pattern space replacing known non printing characters with 111 backslash escaped versions (\\\\, \\a, \\b, \\f, \\r, \\t, \\v). 112 Print bad UTF-8 sequences as \\ooo where ooo is a three digit octal 113 number. 114 Mark end of lines with '$'. 115 .It Ar n 116 Next. 117 Write pattern space (unless 118 .Fl n ) , 119 read next line into pattern space, and continue current cycle. 120 If there is no next line, quit. 121 .It Ar N 122 Next. 123 Read next line, append newline and next line to pattern space, and 124 continue cycle. 125 If there is no next line, quit without printing current pattern space. 126 .It Ar p 127 Print current pattern space. 128 .It Ar P 129 Print current pattern space up to first newline. 130 .It Ar q 131 Quit. 132 .It Ar r file 133 Read file and write contents to output. 134 .It Ar s/re/text/flags 135 Find occurences of regular expression re in the pattern space and 136 replace with text. 137 A '&' in text is replaced with the entire match. 138 A \\d where d is a decimal digit 1-9 is replaced with the corresponding 139 match group from the regular expression. 140 \\n represents a newline in both the regular expression and replacement 141 text. 142 A literal newline in the replacement text must be preceded by a \\. 143 .Pp 144 Flags are 145 .Bl -tag -width Ds 146 .It Ar n 147 A positive decimal number denoting which match in the pattern space 148 to replace. 149 .It Ar g 150 Global. 151 Replace all matches in the pattern space. 152 .It Ar p 153 Print the pattern if a replacement was made. 154 .It Ar w file 155 Write the pattern space to file if a replacement was made. 156 .El 157 .It Ar t Op Ar label 158 Test. 159 Branch to corresponding label if a substitution has been made since the 160 last line was read or last t command was executed. 161 If no label is provided branch to end of script. 162 .It Ar w file 163 Write pattern space to file. 164 .It Ar x 165 Exchange hold space and pattern space. 166 .It Ar y/set1/set2/ 167 Replace each occurrence of a character from set 1 with the corresponding 168 character from set 2. 169 .It Ar :label 170 Create a label for b and t commands. 171 .It Ar #comment 172 The comment extends until the next newline. 173 .It Ar = 174 Write current input line number to output. 175 .El