
1) Exact repro 2) Not an orig 3) Quarrel 4) Short copy 5) To open
Found on
https://www.crosswordclues.com/clue/dup
[system call] In Unix-like operating systems, dup and dup2 system calls create a copy of a given file descriptor. This new descriptor actually does not behave like a copy, but like an alias of the old one. == C library POSIX definition == The former allocates the first available descriptor, just like open behaves; an alternative way to dupl...
Found on
http://en.wikipedia.org/wiki/Dup_(system_call)

• (v. t.) To open; as, to dup the door.
Found on
http://thinkexist.com/dictionary/meaning/dup/

The Democratic Unionist Party draws its support from the Protestant community and is fiercely opposed to any moves towards involving the Republic of Ireland in Northern Ireland affairs. It became the largest party in Northern Ireland following the assembly election in 2003.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Dup transitive verb [ Contr. from
do up , that is, to lift up the latch. Confer
Don ,
Doff .] To open; as, to
dup the door. [ Obsolete]
Shak. Found on
http://www.encyclo.co.uk/webster/D/132
No exact match found.