| NOLOGIN(8) | System Manager's Manual | NOLOGIN(8) | 
nologin —
| nologin | 
nologin displays a message that an account is not
  available and returns a non-zero exit code. It is intended as a replacement
  shell field for accounts that have been disabled.
nologin command appeared in
  4.4BSD, a free re-implementation was contributed in
  NetBSD 1.5 to avoid bloat through the copyright
  comment.
| September 12, 2016 | NetBSD 9.4 |