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Diffstat (limited to 'term-utils/setterm.1.adoc')
| -rw-r--r-- | term-utils/setterm.1.adoc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/term-utils/setterm.1.adoc b/term-utils/setterm.1.adoc index 880fe10..365c4bb 100644 --- a/term-utils/setterm.1.adoc +++ b/term-utils/setterm.1.adoc @@ -156,6 +156,10 @@ Turns underline mode on or off. include::man-common/help-version.adoc[] +== WARNING + +Use of *setterm* in combination with stdout redirection can have unexpected results, as some options operate on stdin. To prevent problems, always redirect both stdin and stdout to the same device. + == COMPATIBILITY Since version 2.25 *setterm* has support for long options with two hyphens, for example *--help*, beside the historical long options with a single hyphen, for example *-help*. In scripts it is better to use the backward-compatible single hyphen rather than the double hyphen. Currently there are no plans nor good reasons to discontinue single-hyphen compatibility. |