sed.1 (4488B)
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 .Ss Addresses 64 Addresses are either blank, a positive decimal integer denoting a line 65 number, the character '$' denoting the last line of input, or a regular 66 expression (in the format 67 .No / Ns 68 .Ar regexp Ns /). 69 A command with no addresses matches every line, one address matches 70 individual lines, and two addresses matches a range of lines from the 71 first to the second address inclusive. 72 .Pp 73 The character '!' may be appended after the addresses, 74 in which case the function is executed only if the addresses 75 .Em don't 76 match. 77 .Ss Functions 78 .Bl -tag -width Ds 79 .It Ar a Op Ar text 80 Append text to output after end of current cycle. 81 .It Ar b Op Ar label 82 Branch to label. 83 If no label is provided branch to end of script. 84 .It Ar c Op Ar text 85 Change. 86 Delete addressed range and output text after end of current cycle. 87 .It Ar d 88 Delete pattern space and begin next cycle. 89 .It Ar D 90 Delete pattern space up to and including first newline and begin new 91 cycle without reading input. 92 If there is no newline, behave like d. 93 .It Ar g 94 Get. 95 Replace the pattern space with the hold space. 96 .It Ar G 97 Get. 98 Append a newline and the hold space to the pattern space. 99 .It Ar h 100 Hold. 101 Replace the hold space with the pattern space. 102 .It Ar H 103 Hold. 104 Append a newline and the pattern space to the hold space. 105 .It Ar i Op Ar text 106 Insert text in output. 107 .It Ar l 108 List? Write the pattern space replacing known non printing characters with 109 backslash escaped versions (\\\\, \\a, \\b, \\f, \\r, \\t, \\v). 110 Print bad UTF-8 sequences as \\ooo where ooo is a three digit octal 111 number. 112 Mark end of lines with '$'. 113 .It Ar n 114 Next. 115 Write pattern space (unless 116 .Fl n ) , 117 read next line into pattern space, and continue current cycle. 118 If there is no next line, quit. 119 .It Ar N 120 Next. 121 Read next line, append newline and next line to pattern space, and 122 continue cycle. 123 If there is no next line, quit without printing current pattern space. 124 .It Ar p 125 Print current pattern space. 126 .It Ar P 127 Print current pattern space up to first newline. 128 .It Ar q 129 Quit. 130 .It Ar r file 131 Read file and write contents to output. 132 .It Ar s/re/text/flags 133 Find occurences of regular expression re in the pattern space and 134 replace with text. 135 A '&' in text is replaced with the entire match. 136 A \\d where d is a decimal digit 1-9 is replaced with the corresponding 137 match group from the regular expression. 138 \\n represents a newline in both the regular expression and replacement 139 text. 140 A literal newline in the replacement text must be preceded by a \\. 141 .Pp 142 Flags are 143 .Bl -tag -width Ds 144 .It Ar n 145 A positive decimal number denoting which match in the pattern space 146 to replace. 147 .It Ar g 148 Global. 149 Replace all matches in the pattern space. 150 .It Ar p 151 Print the pattern if a replacement was made. 152 .It Ar w file 153 Write the pattern space to file if a replacement was made. 154 .El 155 .It Ar t Op Ar label 156 Test. 157 Branch to corresponding label if a substitution has been made since the 158 last line was read or last t command was executed. 159 If no label is provided branch to end of script. 160 .It Ar w file 161 Write pattern space to file. 162 .It Ar x 163 Exchange hold space and pattern space. 164 .It Ar y/set1/set2/ 165 Replace each occurrence of a character from set 1 with the corresponding 166 character from set 2. 167 .It Ar :label 168 Create a label for b and t commands. 169 .It Ar #comment 170 The comment extends until the next newline. 171 .It Ar = 172 Write current input line number to output. 173 .El