$^ The name of the current top-of-page format for the currently selected output channel. The default is the name of the filehandle with

$0 Contains the name of the program being executed. On some (but not all) operating systems assigning to

$[ This variable stores the index of the first element in an array, and of the first character in a substring. The default is 0, but you could

@- $-[0] is the offset of the start of the last successful match

$^O The name of the operating system under which this copy of Perl was built, as determined during the configuration process. For examples

seekdir DIRHANDLE,POS Sets the current position for the

NAME

$^H WARNING: This variable is strictly for internal use only. Its availability, behavior, and contents are subject to change without notice

NAME

NAME