Korn shell
The Korn shell (ksh command) is backwardly compatible with the
Bourne shell (bsh command) and contains most of the Bourne shell features
as well as several of the best features of the C shell.
Variables set by the Korn shell or POSIX shell Variables used by the Korn shell or POSIX shell Command substitution in the Korn shell or POSIX shell Arithmetic evaluation in the Korn shell or POSIX shell let command enables you to perform integer arithmetic. Field splitting in the Korn shell or POSIX shell IFS (Internal Field Separator) variable. Where such characters are found, the shell splits the substitutions into distinct arguments.List of Korn shell or POSIX shell special built-in commands Korn shell or POSIX shell regular built-in commands Conditional expressions for the Korn shell or POSIX shell [[ compound command to test attributes of files and to compare strings. Quotation of characters in the Korn shell or POSIX shell quote it.Restricted Korn shell Reserved words in the Korn shell or POSIX shell Enhanced Korn shell (ksh93) /usr/bin/ksh ), AIX® provides an enhanced version available as Korn shell /usr/bin/ksh93 . This enhanced version is mostly upwardly compatible with the current default version, and includes a few additional features that are not available in Korn shell /usr/bin/ksh . Exit status in the Korn shell or POSIX shell Parameters in the Korn shell File name substitution in the Korn shell or POSIX shell Word variable for certain characters. Input and output redirection in the Korn shell or POSIX shell Korn shell or POSIX shell built-in commands Job control in the Korn shell or POSIX shell jobs . Inline editing in the Korn shell or POSIX shell RETURN or LINE FEED ). When you activate the emacs, gmacs, or vi inline editing option, you can edit the command line.Korn shell or POSIX shell commands Command aliasing in the Korn shell or POSIX shell