alias $ERROR_INFO $! alias $ERROR_POSITION $@ alias $LOADED_FEATURES $" alias $FS $; alias $FIELD_SEPARATOR $; alias $OFS $, alias $OUTPUT_FIELD_SEPARATOR $, alias $RS $/ alias $INPUT_RECORD_SEPARATOR $/ alias $ORS $\ alias $OUTPUT_RECORD_SEPARATOR $\ alias $INPUT_LINE_NUMBER $. alias $NR $. alias $LAST_READ_LINE $_ alias $DEFAULT_OUTPUT $> alias $DEFAULT_INPUT $< alias $PID $$ alias $PROCESS_ID $$ alias $CHILD_STATUS $? alias $LAST_MATCH_INFO $~ alias $IGNORECASE $= alias $PROGRAM_NAME $0 alias $ARGV $* alias $MATCH $& alias $PREMATCH $` alias $POSTMATCH $' alias $LAST_PAREN_MATCH $+