97 lines
2.7 KiB
Groff
97 lines
2.7 KiB
Groff
'\" t
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.\" Title: colcrt
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.\" Author: [see the "AUTHOR(S)" section]
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.\" Generator: Asciidoctor 2.0.15
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.\" Date: 2022-02-17
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.\" Manual: User Commands
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.\" Source: util-linux 2.38
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.\" Language: English
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.\"
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.TH "COLCRT" "1" "2022-02-17" "util\-linux 2.38" "User Commands"
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.ie \n(.g .ds Aq \(aq
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.el .ds Aq '
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.ss \n[.ss] 0
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.nh
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.ad l
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.de URL
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\fI\\$2\fP <\\$1>\\$3
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..
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.als MTO URL
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.if \n[.g] \{\
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. mso www.tmac
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. am URL
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. ad l
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. .
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. am MTO
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. ad l
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. .
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. LINKSTYLE blue R < >
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.\}
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.SH "NAME"
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colcrt \- filter nroff output for CRT previewing
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.SH "SYNOPSIS"
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.sp
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\fBcolcrt\fP [options] [\fIfile\fP ...]
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.SH "DESCRIPTION"
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.sp
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\fBcolcrt\fP provides virtual half\-line and reverse line feed sequences for terminals without such capability, and on which overstriking is destructive. Half\-line characters and underlining (changed to dashing `\-\(aq) are placed on new lines in between the normal output lines.
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.SH "OPTIONS"
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.sp
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\fB\-\fP, \fB\-\-no\-underlining\fP
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.RS 4
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Suppress all underlining. This option is especially useful for previewing \fIallboxed\fP tables from \fBtbl\fP(1).
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.RE
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.sp
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\fB\-2\fP, \fB\-\-half\-lines\fP
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.RS 4
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Causes all half\-lines to be printed, effectively double spacing the output. Normally, a minimal space output format is used which will suppress empty lines. The program never suppresses two consecutive empty lines, however. The \fB\-2\fP option is useful for sending output to the line printer when the output contains superscripts and subscripts which would otherwise be partially invisible.
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.RE
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.sp
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\fB\-h\fP, \fB\-\-help\fP
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.RS 4
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Display help text and exit.
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.RE
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.sp
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\fB\-V\fP, \fB\-\-version\fP
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.RS 4
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Print version and exit.
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.RE
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.SH "HISTORY"
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.sp
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The \fBcolcrt\fP command appeared in 3.0BSD.
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.SH "BUGS"
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.sp
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Should fold underlines onto blanks even with the \fB\-\fP option so that a true underline character would show.
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.sp
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Can\(cqt back up more than 102 lines.
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.sp
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General overstriking is lost; as a special case \(aq|\(aq overstruck with \(aq\-\(aq or underline becomes \(aq+\(aq.
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.sp
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Lines are trimmed to 132 characters.
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.sp
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Some provision should be made for processing superscripts and subscripts in documents which are already double\-spaced.
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.SH "EXAMPLES"
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.sp
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A typical use of \fBcolcrt\fP would be:
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.RS 3
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.ll -.6i
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.sp
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\fBtbl exum2.n | nroff \-ms | colcrt \- | more\fP
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.br
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.RE
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.ll
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.SH "SEE ALSO"
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.sp
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\fBcol\fP(1),
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\fBmore\fP(1),
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\fBnroff\fP(1),
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\fBtroff\fP(1),
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\fBul\fP(1)
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.SH "REPORTING BUGS"
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.sp
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For bug reports, use the issue tracker at \c
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.URL "https://github.com/util\-linux/util\-linux/issues" "" "."
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.SH "AVAILABILITY"
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.sp
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The \fBcolcrt\fP command is part of the util\-linux package which can be downloaded from \c
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.URL "https://www.kernel.org/pub/linux/utils/util\-linux/" "Linux Kernel Archive" "." |