diff options
| -rw-r--r-- | usr.bin/sed/sed.1 | 100 |
1 files changed, 51 insertions, 49 deletions
diff --git a/usr.bin/sed/sed.1 b/usr.bin/sed/sed.1 index 28d6af05e3a..4daef67d80c 100644 --- a/usr.bin/sed/sed.1 +++ b/usr.bin/sed/sed.1 @@ -1,4 +1,4 @@ -.\" $OpenBSD: sed.1,v 1.20 2004/01/23 23:08:47 jmc Exp $ +.\" $OpenBSD: sed.1,v 1.21 2004/01/29 21:19:04 jmc Exp $ .\" .\" Copyright (c) 1992, 1993 .\" The Regents of the University of California. All rights reserved. @@ -100,9 +100,9 @@ option suppresses this behavior. The form of a .Nm command is as follows: -.sp +.Pp .Dl [address[,address]]function[arguments] -.sp +.Pp Whitespace may be inserted before the first address and the function portions of the command. .Pp @@ -110,7 +110,7 @@ Normally, .Nm cyclically copies a line of input, not including its terminating newline character, into a -.Em "pattern space" , +.Em pattern space , (unless there is something left after a .Sq D function), @@ -119,14 +119,14 @@ copies the pattern space to the standard output, appending a newline, and deletes the pattern space. .Pp Some of the functions use a -.Em "hold space" +.Em hold space to save all or part of the pattern space for subsequent retrieval. -.Sh "Sed Addresses" +.Sh SED ADDRESSES An address is not required, but if specified must be a number (that counts input lines -cumulatively across input files), a dollar +cumulatively across input files), a dollar character .Pq Ql $ -character that addresses the last line of input, or a context address +that addresses the last line of input, or a context address (which consists of a regular expression preceded and followed by a delimiter). .Pp @@ -148,16 +148,16 @@ Editing commands can be applied to non-selected pattern spaces by use of the exclamation character .Pq Ql \&! function. -.Sh "Sed Regular Expressions" +.Sh SED REGULAR EXPRESSIONS The .Nm -regular expressions are basic regular expressions (BRE's, see +regular expressions are basic regular expressions (BRE's; see .Xr re_format 7 for more information). In addition, .Nm has the following two additions to BRE's: -.sp +.Pp .Bl -enum -compact .It In a context address, any character other than a backslash @@ -172,7 +172,7 @@ and the second .Sq x stands for itself, so that the regular expression is .Dq abcxdef . -.sp +.Pp .It The escape sequence \en matches a newline character embedded in the pattern space. @@ -195,7 +195,7 @@ will substitute .Dq XXX for the pattern .Dq abc . -.Sh "Sed Functions" +.Sh SED FUNCTIONS In the following list of commands, the maximum number of permissible addresses for each command is indicated by [0addr], [1addr], or [2addr], representing zero, one, or two addresses. @@ -250,73 +250,73 @@ The function can be preceded by whitespace as well. The terminating .Ql } must be preceded by a newline or optional whitespace. -.sp -.Bl -tag -width "XXXXXX" -compact +.Pp +.Bl -tag -width "XXXXXXXX" -compact .It [2addr] Em function-list Execute .Em function-list only when the pattern space is selected. -.sp +.Pp .It [1addr] Ns Em a Ns \e .It Em text -.br +.Pp Write .Em text to standard output immediately before each attempt to read a line of input, whether by executing the .Sq N function or by beginning a new cycle. -.sp +.Pp .It [2addr] Ns Em b Ns [label] Branch to the .Sq \&: function with the specified label. If the label is not specified, branch to the end of the script. -.sp +.Pp .It [2addr] Ns Em c Ns \e .It Em text -.br +.Pp Delete the pattern space. With 0 or 1 address or at the end of a 2-address range, .Em text is written to the standard output. -.sp +.Pp .It [2addr] Ns Em d Delete the pattern space and start the next cycle. -.sp +.Pp .It [2addr] Ns Em D Delete the initial segment of the pattern space through the first newline character and start the next cycle. -.sp +.Pp .It [2addr] Ns Em g Replace the contents of the pattern space with the contents of the hold space. -.sp +.Pp .It [2addr] Ns Em G Append a newline character followed by the contents of the hold space to the pattern space. -.sp +.Pp .It [2addr] Ns Em h Replace the contents of the hold space with the contents of the pattern space. -.sp +.Pp .It [2addr] Ns Em H Append a newline character followed by the contents of the pattern space to the hold space. -.sp +.Pp .It [1addr] Ns Em i Ns \e .It Em text -.br +.Pp Write .Em text to the standard output. -.sp +.Pp .It [2addr] Ns Em l (The letter ell.) Write the pattern space to the standard output in a visually unambiguous form. This form is as follows: -.sp +.Pp .Bl -tag -width "carriage-returnXX" -offset indent -compact .It backslash \e\e @@ -341,28 +341,28 @@ Long lines are folded, with the point of folding indicated by displaying a backslash followed by a newline. The end of each line is marked with a .Ql $ . -.sp +.Pp .It [2addr] Ns Em n Write the pattern space to the standard output if the default output has not been suppressed, and replace the pattern space with the next line of input. -.sp +.Pp .It [2addr] Ns Em N Append the next line of input to the pattern space, using an embedded newline character to separate the appended material from the original contents. Note that the current line number changes. -.sp +.Pp .It [2addr] Ns Em p Write the pattern space to standard output. -.sp +.Pp .It [2addr] Ns Em P Write the pattern space, up to the first newline character to the standard output. -.sp +.Pp .It [1addr] Ns Em q Branch to the end of the script and quit without starting a new cycle. -.sp +.Pp .It [1addr] Ns Em r file Copy the contents of .Em file @@ -372,7 +372,7 @@ If .Em file cannot be read for any reason, it is silently ignored and no error condition is set. -.sp +.Pp .It [2addr] Ns Em s Ns /re/replacement/flags Substitute the replacement string for the first instance of the regular expression in the pattern space. @@ -403,7 +403,7 @@ The value of .Em flags in the substitute function is zero or more of the following: .Bl -tag -width "XXXXXX" -offset indent -.It "0 ... 9" +.It 0 ... 9 Make the substitution only for the N'th occurrence of the regular expression in the pattern space. .It g @@ -420,7 +420,7 @@ if a replacement was made. If the replacement string is identical to that which it replaces, it is still considered to have been a replacement. .El -.sp +.Pp .It [2addr] Ns Em t Ns [label] Branch to the .Ql \&: @@ -429,14 +429,14 @@ most recent reading of an input line or execution of a .Sq t function. If no label is specified, branch to the end of the script. -.sp +.Pp .It [2addr] Ns Em w file Append the pattern space to the .Em file . -.sp +.Pp .It [2addr] Ns Em x Swap the contents of the pattern and hold spaces. -.sp +.Pp .It [2addr] Ns Em y Ns /string1/string2/ Replace all occurrences of characters in .Em string1 @@ -452,29 +452,29 @@ a backslash followed by any character other than a newline is that literal character, and a backslash followed by an .Sq n is replaced by a newline character. -.sp +.Pp .Sm off -.It Xo [2addr] Em !function No ,\ [2addr] +.It Xo [2addr] Em !function No ,\ \&[2addr] .Em !function-list .Xc .Sm on Apply the function or function-list only to the lines that are .Em not selected by the address(es). -.sp -.It [0addr] Ns Em : Ns label +.Pp +.It [0addr] Ns Em \&: Ns label This function does nothing; it bears a label to which the .Sq b and .Sq t commands may branch. -.sp +.Pp .It [1addr] Ns Em = Write the line number to the standard output followed by a newline character. -.sp +.Pp .It [0addr] Empty lines are ignored. -.sp +.Pp .It [0addr] Ns Em # The .Ql # @@ -496,6 +496,8 @@ utility exits 0 on success or >0 if an error occurred. .Xr grep 1 , .Xr regex 3 , .Xr re_format 7 +.Pp +.Pa /usr/share/doc/usd/15.sed/ .Sh STANDARDS The .Nm |