Thank you Deepak,
When I did normalization with my doupts I got a rma.txt like below, a long file (one column and many rows) of which I copied and pasted only few rows:
GSM1645665_120727-120222A_H_Citrus_.CEL
1.7350
1.7350
6.5272
6.7832
6.9627
7.8931
7.8896
10.3757
9.4220
11.4562
8.4377
9.7743
8.3431
8.2561
9.3874
7.8312
8.7202
5.5769
5.5464
5.7477
6.1443
5.4833
6.2989
7.7261
5.9480
6.6255
6.8168
6.8916
while the produced rma.txt by tutorial is like this:
#%guid=00003123-44eb-4068-1f22-004e560061c2
#%affymetrix-algorithm-param-apt-engine=ProbesetSummarizeEngine
#%affymetrix-algorithm-param-apt-program-name=Expression Console
#%affymetrix-algorithm-param-apt-command-line=
#%affymetrix-algorithm-param-apt-exec-guid=0000040472-1431761500-0000017680-0000004998-0000023182
#%affymetrix-algorithm-param-apt-analysis-guid=0000758a-0436-4e15-2043-004609003cbb
#%affymetrix-algorithm-param-apt-time-str=Sat May 16 12:01:40 2015
#%affymetrix-algorithm-param-apt-version=1.4.1.46
#%affymetrix-algorithm-param-apt-cvs-id=.........................................................
I think by my doubts I could not get the proper result