The

command finds a script that implements the requested

selects from multiple implementations if available according to a fixed internal list, and executes the command.

Print a help message instead of running a command. If no command is given, prints brief usage for

itself.

Print a version banner for the launcher itself including the version of DejaGnu. Any command given is ignored.

Emit additional output describing the operation of the

launcher itself. This option is also passed on to the invoked command.

All arguments after the command name are passed to the invoked command.

If set, the location of DejaGnu's library in the filesystem. The search described in

does not happen if

is set.

Full file name for an Awk interpreter that may or may not actually be GNU Awk. If not set,

will be searched for an

program. If the Awk interpreter is actually GNU Awk, the

option will be given if an Awk implementation is used.

Full file name for GNU Awk. If not set,

will be searched for a

program.

Full file name for GNU Bash. If not set,

will be searched for a

program. Note that Bash itself sets this variable, even when run as

even when running a script.

Full file name for Expect, which is a Tcl interpreter with the Expect extension already loaded. If not set,

will be searched for an

program. Note that the DejaGnu core is written in Expect, so this interpreter should always be available.

Full file name for a Tcl interpreter. If not set,

will be searched for a

program.

Note that GNU Awk is considered a superset of Awk and that Expect is considered a superset of Tcl, allowing the former to be used to run scripts written for the latter. This means that, while Awk programs will generally be run with GNU extensions disabled using the

option to GNU Awk, Tcl programs may be run with either

or

and should be written accordingly.

If

is set, all command scripts are expected to be in this directory.

Otherwise, the first directory that actually exists in the following list is used, where

represents the directory containing

itself.

The full documentation for DejaGnu is maintained as a Texinfo manual. If the

program is properly installed at your site, the command

should give you access to the complete manual.

The command name must precede all other arguments due to limitations of the shell.