The English language has two indefinite articles:
- a: used before words that begin with a consonant sound (e.g., a program, a host, a user);
- an: used before words that begin with a vowel sound (e.g., an example, an hour, an undefined variable).
anorack is a specialized spell-checker that finds incorrect indefinite articles:
$ cat test
a Ubuntu user
a 8-byte word
an username
$ anorack test
test:1: a Ubuntu -> an Ubuntu /u:b'u:ntu:/
test:2: a 8 -> an 8 /'eIt/
test:3: an username -> a username /j'u:z3n,eIm/