Ul
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ul translates underscoring and tabs in its input into the sequence appropriate for a terminal, either the one indicated by the environment variable TERM or the one given with the -t option. The result may be to render the underlining, or to render standout, or ignore underlining depending on the terminal's capabilities indicated in /etc/termcap.
Options
- -t terminal use the capabilities of terminal rather than the one indicated in the environment.
- -i render underlines as dashes in a separate line. Useful for investigation of nroff output, or when using a terminal incapable of underlining or standout.
Environment
The command is affected by environment variables LANG, LC_ALL, LC_CTYPE and TERM as described in the environ(7) man page.
Provided by
Most (all?) Linux distributions incorporate this from the [util-linux] project