06-22-2017
You can create an account with a user name that does not contain any lowercase letters, but that poor user will curse you every time they try to login if you do so. When you login to a UNIX system (such as Solaris release 10) with a user name that doesn't contain any lowercase letters, the system will assume that you are logging in from a device (such as a TTY Model 33 teletype) that only has uppercase letters. To login as BG0001, they will need to type in the string \B\G001 and any uppercase characters in their password will also have to be escaped. After they have successfully logged in (if they are able to do so), they'll need to use stty to tell the TTY subsystem that the terminal emulator they're using does understand both uppercase and lowercase letters. Then that user will need to remember the different possible modes they might be working in whenever they try to change their password, enter their user name, type commands into their shell, etc.
The automated scripts that set up new user accounts complain about uppercase only user names for a reason. I strongly encourage you to heed the warning provided by the useradd warnings.
This User Gave Thanks to Don Cragun For This Post:
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LEARN ABOUT MOJAVE
ttk_image
ttk_image(n) Tk Themed Widget ttk_image(n)
__________________________________________________________________________________________________________________________________________________
NAME
ttk_image - Define an element based on an image
SYNOPSIS
ttk::style element create name image imageSpec ?options?
_________________________________________________________________
DESCRIPTION
The image element factory creates a new element in the current theme whose visual appearance is determined by Tk images. imageSpec is a
list of one or more elements. The first element is the default image name. The rest of the list is a sequence of statespec / value pairs
specifying other images to use when the element is in a particular state or combination of states.
OPTIONS
Valid options are:
-border padding
padding is a list of up to four integers, specifying the left, top, right, and bottom borders, respectively. See IMAGE STRETCHING,
below.
-height height
Specifies a minimum height for the element. If less than zero, the base image's height is used as a default.
-padding padding
Specifies the element's interior padding. Defaults to -border if not specified.
-sticky spec
Specifies how the image is placed within the final parcel. spec contains zero or more characters "n", "s", "w", or "e".
-width width
Specifies a minimum width for the element. If less than zero, the base image's width is used as a default.
IMAGE STRETCHING
If the element's allocated parcel is larger than the image, the image will be placed in the parcel based on the -sticky option. If the
image needs to stretch horizontally (i.e., -sticky ew) or vertically (-sticky ns), subregions of the image are replicated to fill the par-
cel based on the -border option. The -border divides the image into 9 regions: four fixed corners, top and left edges (which may be tiled
horizontally), left and right edges (which may be tiled vertically), and the central area (which may be tiled in both directions).
EXAMPLE
set img1 [image create photo -file button.png]
set img2 [image create photo -file button-pressed.png]
set img3 [image create photo -file button-active.png]
style element create Button.button image
[list $img1 pressed $img2 active $img3]
-border {2 4} -sticky we
SEE ALSO
ttk::intro(n), ttk::style(n), ttk_vsapi(n), image(n), photo(n)
KEYWORDS
style, theme, appearance, pixmap theme, image
Tk 8.5 ttk_image(n)