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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | HISTORY | BUGS | EXAMPLES | SEE ALSO | REPORTING BUGS | AVAILABILITY |
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COLCRT(1) User Commands COLCRT(1)
colcrt - filter nroff output for CRT previewing
colcrt [options] [file ...]
colcrt 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 `-') are placed on new lines in between the normal output
lines.
-, --no-underlining
Suppress all underlining. This option is especially useful for
previewing allboxed tables from tbl(1).
-2, --half-lines
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 -2 option
is useful for sending output to the line printer when the
output contains superscripts and subscripts which would
otherwise be partially invisible.
-h, --help
Display help text and exit.
-V, --version
Print version and exit.
The colcrt command appeared in 3.0BSD.
Should fold underlines onto blanks even with the - option so that
a true underline character would show.
Can’t back up more than 102 lines.
General overstriking is lost; as a special case '|' overstruck
with '-' or underline becomes '+'.
Lines are trimmed to 132 characters.
Some provision should be made for processing superscripts and
subscripts in documents which are already double-spaced.
A typical use of colcrt would be:
tbl exum2.n | nroff -ms | colcrt - | more
col(1), more(1), nroff(1), troff(1), ul(1)
For bug reports, use the issue tracker
<https://github.com/util-linux/util-linux/issues>.
The colcrt command is part of the util-linux package which can be
downloaded from Linux Kernel Archive
<https://www.kernel.org/pub/linux/utils/util-linux/>. This page is
part of the util-linux (a random collection of Linux utilities)
project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
util-linux@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
2025-02-02. (At that time, the date of the most recent commit that
was found in the repository was 2025-01-30.) If you discover any
rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a
mail to man-pages@man7.org
util-linux 2.41.devel-938-0a... 2025-01-15 COLCRT(1)
Pages that refer to this page: ul(1)
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HTML rendering created 2025-02-02 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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