3 .\" Query terminal for size and inform the kernel
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35 .Nd update terminal size
43 queries the terminal emulator for the current window size and updates
44 the size known to the kernel using the
48 The following options are available:
49 .Bl -tag -width ".Fl z"
51 Do nothing unless the current kernel terminal size is zero.
52 This is useful when run from a user's profile (shell startup) scripts:
53 querying the window size is required for serial lines, but not when
54 logging in over the network, as protocols like TELNET or SSH already
55 handle the terminal size by themselves.
58 After a terminal window has been resized, running
60 updates the kernel's window size to match the new size.
63 is functionally similar to
70 only works with VT100/ANSI-compatible terminals and does not emit
71 commands to set environment variables.
73 The terminal is assumed to be VT100/ANSI compatible.
74 The VT100/ANSI escape sequences are supported by virtually all modern
75 terminals, including xterm, konsole, gnome-terminal, iTerm,
76 Terminal.app, and PuTTY.
83 command first appeared in