Korn Shell: Unix and Linux Programming Manual, Third Edition, The

Variable Attributes

Variables can have one or more attributes that specify their internal representation, scope, or the way they are displayed.

Variable Attribute Assignment Format

typeset –H variable	Set Unix to host-name file mapping for non-Unix systems
typeset –i variable	Set variable to be integer type
typeset –in variable	Set variable to be integer type with base n
typeset –l variable	Set variable to lower case
typeset –L variable	Left justify variable; the field width is specified by the first assignment
typeset –Ln variable	Left justify variable; set field width to n
typeset –LZn variable	Left justify variable; set field width to n and strip leading zeros
typeset –r variable	Set variable to be readonly (same as readonly)
typeset –R variable	Right justify ...