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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 |
