English (Perl in a Nutshell, 2nd Edition)

8.63. English

Provides aliases for the Perl built-in special variables. Everything else about the variables and their use remains the same. Be aware, though, that using the English module significantly slows down a program for regular expressions.

Some of the Perl variables match some awk built-in variables. For those cases, you'll find two English names: a short version (which is the awk name) and a longer version. For example, you can use either $ERRNO (the awk name) or $OS_ERROR to refer to the Perl variable $!.

Here is the list of variables and their English alternatives:

Perl	English	Perl	English
`@_`	`@ARG`	`$?`	`$CHILD_ERROR`
`$_`	`$ARG`	`$!`	`$OS_ERROR`
`$%`	`$MATCH`	`$!`	`$ERRNO`
`$'`	`$PREMATCH`	`$@`	`$EVAL_ERROR`
`$`'	`$POSTMATCH`	`$$`	`$PROCESS_ID`
`$+`	`$LAST_PAREN_MATCH`	`$$`	`$PID`
`$`.	`$INPUT_LINE_NUMBER`	`$<`	`$REAL_USER_ID`
`$`.	`$NR`	`$<`	`$UID`
`$/`	`$INPUT_RECORD_SEPARATOR`	`$>`	`$EFFECTIVE_USER_ID`
`$/`	`$RS`	`$>`	`$EUID`
`$\|`	`$OUTPUT_AUTOFLUSH`	`$(`	`$REAL_GROUP_ID`
`$`,	`$OUTPUT_FIELD_SEPARATOR`	`$(`	`$GID`
`$`,	`$OFS`	`$)`	`$EFFECTIVE_GROUP_ID`
`$\`	`$OUTPUT_RECORD_SEPARATOR`	`$)`	`$EGID`
`$\`	`$ORS`	`$0`	`$PROGRAM_NAME`
`$`"	`$LIST_SEPARATOR`	`$]`	`$PERL_VERSION`
`$;`	`$SUBSCRIPT_SEPARATOR`	`$^A`	`$ACCUMULATOR`
`$;`	`$SUBSEP`	`$^D`	`$DEBUGGING`
`$%`	`$FORMAT_PAGE_NUMBER`	`$^F`	`$SYSTEM_FD_MAX`
`$=`	`$FORMAT_LINES_PER_PAGE`	`$^I`	`$INPLACE_EDIT`
`$-`	`$FORMAT_LINES_LEFT`	`$^P`	`$PERLDB`
`$~`	`$FORMAT_NAME`	`$^T`	`$BASETIME`
`$^`	`$FORMAT_TOP_NAME`	`$^W`	$WARNING
`$`:	`$FORMAT_LINE_BREAK_CHARACTERS`	`$^X`	`$EXECUTABLE_NAME`
`$^L`	`$FORMAT_LINEFEED`	`$^O`	`$OSNAME`