[R] combine elements of list into a vector

[mohamed nur anisah]

Dear R,
   
  Can anybody help me on how to combine all the elements in a list into a single vector?? I've tried using unlist command but it gave me wrong output.  Below is the example of the vector output that i want and attach with is my list of data. Any suggestion?? Many Thanks
  
   breakp.start
     6978022
     10249966
     10955201
     11045352
     11814604
     13847633
     16022770
     23625856
     29676192
     30164446
     34558312
     44009616
     53582632
     7428353
     20225456
     33046200
     57970280
     70011280
     70677328
     71362456
     71824776
     74014744
     90487648
    101058192
    102176888
    102409592
    110591464
    116407200
    131185424
    132395992
    137564368
    142716752
    148377392
    148838944
    154876816
   

       
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