how to compare two files data in perl ..???

[rumaisa alam]

i am new to perl.i want to write a perl script to compare this data :
XBUF1/I net1 clk1 2.5e+06 0.2 2.5e+06 N
XBUF1/Z net2 clk1 2.5e+06 0.2 2.5e+06 N
XBUF2/I netgclk1 clk2 2.5e+06 2 2.5e+06 Y
XBUF2/Z netgclk2 clk2 2.5e+06 2 2.5e+06 Y
XGCLK2/CP netgclk2 clk2 2.5e+06 2 2.5e+06 Y
XGCLK2/E net2 clk1 2.5e+06 0.2 2.5e+06 Y
XGCLK2/Q out1 clk2 2.5e+06 2 2.5e+06 Y
XGCLK2/TE te1 NA 2.5e+06 0.2 2.5e+06 Y
XGCLK1/CP clk2 clk2 2.5e+06 2 2.5e+06 Y
XGCLK1/E en1 NA 2.5e+06 0.2 2.5e+06 Y
XGCLK1/Q netgclk1 clk2 2.5e+06 2 2.5e+06 Y
XGCLK1/TE te1 NA 2.5e+06 0.2 2.5e+06 Y
XFF1/CDN rst1 NA 2.5e+06 0.2 2.5e+06 N
XFF1/CP clk1 clk1 2.5e+06 2 2.5e+06 N
XFF1/D in1 NA 2.5e+06 0.2 2.5e+06 N
XFF1/Q net1 clk1 2.5e+06 0.2 2.5e+06 N
XFF1/QN dum1 clk1 2.5e+06 0.2 2.5e+06 N
............... ............... ............... .............
i want to compare dis data with itself line by line...
can you please help me write the script...

[computerfox]

Read the files, parse, then compare. What do you have so far? We don't do homework or work assignments here.