diff options
| author | Lennart Poettering <lennart@poettering.net> | 2024-07-12 06:06:11 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2024-07-19 11:44:04 +0200 |
| commit | c06b84d816fdeb6a26691b6f3504f541644edb6f (patch) | |
| tree | 072a7bd8dbd82e71bb3c6780325ce0bbb7a7a0a2 /man/systemd.exec.xml | |
| parent | units: bring agetty command lines back into sync (diff) | |
| download | systemd-c06b84d816fdeb6a26691b6f3504f541644edb6f.tar.xz systemd-c06b84d816fdeb6a26691b6f3504f541644edb6f.zip | |
man: clarify what TTYReset= and TTYVTDisallocate= do and do not do regarding screen clearing
Diffstat (limited to '')
| -rw-r--r-- | man/systemd.exec.xml | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/man/systemd.exec.xml b/man/systemd.exec.xml index 7a2fc76b65..c79cf67445 100644 --- a/man/systemd.exec.xml +++ b/man/systemd.exec.xml @@ -3322,7 +3322,8 @@ StandardInputData=V2XigLJyZSBubyBzdHJhbmdlcnMgdG8gbG92ZQpZb3Uga25vdyB0aGUgcnVsZX <term><varname>TTYReset=</varname></term> <listitem><para>Reset the terminal device specified with <varname>TTYPath=</varname> before and after - execution. Defaults to <literal>no</literal>.</para></listitem> + execution. This does not erase the screen (see <varname>TTYVTDisallocate=</varname> below for + that). Defaults to <literal>no</literal>.</para></listitem> </varlistentry> <varlistentry> @@ -3333,11 +3334,12 @@ StandardInputData=V2XigLJyZSBubyBzdHJhbmdlcnMgdG8gbG92ZQpZb3Uga25vdyB0aGUgcnVsZX </varlistentry> <varlistentry> - <term><varname>TTYRows=</varname></term> <term><varname>TTYColumns=</varname></term> + <term><varname>TTYRows=</varname></term> <listitem><para>Configure the size of the TTY specified with <varname>TTYPath=</varname>. If unset or - set to the empty string, the kernel default is used.</para> + set to the empty string, it is attempted to retrieve the dimensions of the terminal screen via ANSI + sequences, and if that fails the kernel defaults (typically 80x24) are used.</para> <xi:include href="version-info.xml" xpointer="v250"/></listitem> </varlistentry> @@ -3345,9 +3347,10 @@ StandardInputData=V2XigLJyZSBubyBzdHJhbmdlcnMgdG8gbG92ZQpZb3Uga25vdyB0aGUgcnVsZX <varlistentry> <term><varname>TTYVTDisallocate=</varname></term> - <listitem><para>If the terminal device specified with <varname>TTYPath=</varname> is a virtual console - terminal, try to deallocate the TTY before and after execution. This ensures that the screen and scrollback - buffer is cleared. Defaults to <literal>no</literal>.</para></listitem> + <listitem><para>If the terminal device specified with <varname>TTYPath=</varname> is a virtual + console terminal, try to deallocate the TTY before and after execution. This ensures that the screen + and scrollback buffer is cleared. If the terminal device is of any other type of TTY an attempt is + made to clear the screen via ANSI sequences. Defaults to <literal>no</literal>.</para></listitem> </varlistentry> </variablelist> </refsect1> |