to make 2 lines into 1 line using awk

cdfd123 · October 3, 2007, 2:30pm

suppose i have a file
AAAHHHHAHH
AJJJJAAAAAA
AJJJJJAAJJAK
AJJAJJAJKKK
the output suhd be
AAAHHHHAHHAJJJJAAAAAAAJJJJJAAJJAKAJJAJJAJKKK

reborg · October 3, 2007, 3:06pm

tr -d '\n' < file > newfile

ghostdog74 · October 3, 2007, 7:44pm

awk 'BEGIN{ORS=""}1' "file" > newfile