[ubuntu] cut option unknown

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http://ubuntuforums.org – I I'm trying to create my first LSF, and there is a command at the start of the tutorial I can't understand : Code: echo -n "Binutils: "; ld --version | head -n1 | cut -d" " -f3-bison --version | head -n1 There is an option Code: f3-bison I find bizare because if i just run Code: test@test:~$ ld --version | head -n1 i get : Code: GNU ld (GNU Binutils for Ubuntu) 2.22 There is not any Code: bison thanks (Hardware)