Reading from a file with limit number of lines

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http://www.unix.com – Hi, I am trying to pull data from a txt file which has 51 lines Example Code: AK AR AL AZ CA CO CT Now i want to send above data as input to script but i want to run them twice at a time in a nohup like nohup Script_name AK & Nohup Script_name AR & And to run the remaining two it should complete the nohup execution for AK & AR. I need a shell script guys.. Please help.. Thanks (HowTos)