Gawk datatypes
From wikinotes
Text
first_name="joe" last_name="george" length("george") # 6 # concatenation full_name=first_name""last_name # joegeorge # split string num_tokens = split("this is my string", a, " ") a[1] = "this" a[2] = "is"
Numbers
integer=1 float=1.1
Arrays
Arrays are 1-indexed in awk.
awk cannot tell the size of an already created array.