magento ssh syntax error /shell/indexer.php

Hello, I wanted to reindex my magento but it me poster this error on my ssh (terminal mac)

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Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /home/Darlin/www/shell/indexer.php on line 43

Are you using command line to reindex? If yes, which command did you use?