ksh93

AT&T KornShell ksh93u+ 2012-08-01 (stable) version

ksh93u+ is the 2012-08-01 (stable) version of the KornShell Language described in "The KornShell Command and Programming Language," by Morris Bolsky and David Korn of AT&T Bell Laboratories. The KornShell is a shell programming language, which is upward compatible with "sh" (the Bourne Shell), and is intended to conform to the IEEE P1003.2/ISO 9945.2 Shell and Utilities standard. ksh93u+ provides an enhanced programming environment in addition to the major command-entry features of the BSD shell "csh". With ksh93u+, medium-sized programming tasks can be performed at shell-level without a significant loss in performance. In addition, "sh" scripts can be run on ksh93u+ without modification.