[R] analizing .txt file with R or an other program

[aRe]

Hello together

I have a .txt file with about 1Mio! rows.

Sometimes the rows are in the following order (whereas the number of rows
between the rows marked with an x differ):

...
*SBLINK R 5261507*x
5261439	  516.4	  364.3	 9148.0	... 	  816.0	-1133.0	   48.4 MA.C.TB...BL.
5261441	  516.4	  364.0	 9145.0	... 	  799.0	-1135.0	   48.7 MA.C.TB...B..
5261443	  516.4	  363.9	 9140.0	... 	  817.0	-1171.0	   49.3 MA.C.TB.....R
*MSG	5261445 Prime 11_fe_ha*x
5261445	  516.7	  363.8	 9133.0	... 	  813.0	-1097.0	   49.3 MA.C.TB......
5261447	  517.0	  363.8	 9127.0	... 	  818.0	-1144.0	   49.9 MA.C.T.LRTB..
*EBLINK R 5261507	5261645	140*x
5261509	   .	   .	    0.0	... 	   .	   .	   . .............
5261511	   .	   .	    0.0	... 	   .	   .	   . .............
*MSG	5261512 Mask 8_ma_ma*x
5261513	   .	   .	    0.0	... 	   .	   .	   . .............
5261515	   .	   .	    0.0	... 	   .	   .	   . .............
...

Here I would like to generate an output, that gives me the two parts
"...Prime 11_fe_ha" and "...Mask 8_ma_ma" if and only if "...Prime 11_fe_ha"
is situated between "SBLINK..." and "EBLINK...".




Sometimes the rows are in the following order (whereas the number of rows
between the rows marked with an x differ):

...
*MSG	5261445 Prime 11_fe_ha*x
5261439	  516.4	  364.3	 9148.0	... 	  816.0	-1133.0	   48.4 MA.C.TB...BL.
5261441	  516.4	  364.0	 9145.0	... 	  799.0	-1135.0	   48.7 MA.C.TB...B..
5261443	  516.4	  363.9	 9140.0	... 	  817.0	-1171.0	   49.3 MA.C.TB.....R
*SBLINK R 5261507*x5261445	  516.7	  363.8	 9133.0	... 	  813.0	-1097.0	  
49.3 MA.C.TB......
5261447	  517.0	  363.8	 9127.0	... 	  818.0	-1144.0	   49.9 MA.C.T.LRTB..
*EBLINK R 5261507	5261645	140*x
5261509	   .	   .	    0.0	... 	   .	   .	   . .............
5261511	   .	   .	    0.0	... 	   .	   .	   . .............
*MSG	5261512 Mask 8_ma_ma*x
5261513	   .	   .	    0.0	... 	   .	   .	   . .............
5261515	   .	   .	    0.0	... 	   .	   .	   . .............
...

Here I would like to generate an output, that consists of the two parts
"...Prime 11_fe_ha" and "...Mask 8_ma_ma" if and only if "SBLINK..." is
situated between "... Prime 11_fe_ha" and "...Mask 8_ma_ma". The place of
the "EBLINK..." is not important. that means also the following structure
should lead to the same output:

...
*MSG	5261445 Prime 11_fe_ha*x
5261439	  516.4	  364.3	 9148.0	... 	  816.0	-1133.0	   48.4 MA.C.TB...BL.
5261441	  516.4	  364.0	 9145.0	... 	  799.0	-1135.0	   48.7 MA.C.TB...B..
5261443	  516.4	  363.9	 9140.0	... 	  817.0	-1171.0	   49.3 MA.C.TB.....R
*SBLINK R 5261507*x5261445	  516.7	  363.8	 9133.0	... 	  813.0	-1097.0	   
5261447	  517.0	  363.8	 9127.0	... 	  818.0	-1144.0	   49.9 MA.C.T.LRTB..
5261509	   .	   .	    0.0	... 	   .	   .	   . .............
5261511	   .	   .	    0.0	... 	   .	   .	   . .............
*MSG	5261512 Mask 8_ma_ma*x
5261513	   .	   .	    0.0	... 	   .	   .	   . .............
5261515	   .	   .	    0.0	... 	   .	   .	   . .............
*EBLINK R 5261507	5261645	140*x
...


can someone give me a advice how I could manage this task?

thanks

best



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