xyuan@crux:~$ cplex -f a.cplex > aa
xyuan@crux:~$ more aa

Welcome to IBM(R) ILOG(R) CPLEX(R) Interactive Optimizer 12.5.0.0
  with Simplex, Mixed Integer & Barrier Optimizers
5725-A06 5725-A29 5724-Y48 5724-Y49 5724-Y54 5724-Y55 5655-Y21
Copyright IBM Corp. 1988, 2012.  All Rights Reserved.

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CPLEX> Problem 'method2.lp' read.
Read time = 0.00 sec. (0.00 ticks)
CPLEX> Tried aggregator 1 time.
LP Presolve eliminated 77 rows and 32 columns.
All rows and columns eliminated.
Presolve time = 0.00 sec. (0.02 ticks)

Dual simplex - Optimal:  Objective =  2.7000000000e+04
Solution time =    0.00 sec.  Iterations = 0 (0)
Deterministic time = 0.04 ticks  (40.49 ticks/sec)

CPLEX> 
xyuan@crux:~$