connect to sqlplus without writing as sysdba
$ alias sqs='sqlplus / as sysdba'
$ sqs

SQL*Plus: Release 12.1.0.2.0 Production on Wed Jun 15 20:33:31 2016

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Connected to:
Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, Automatic Storage Management, OLAP, Advanced Analytics
and Real Application Testing options

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