openwrt/package/base-files/default/bin/login

   1 #!/bin/sh
   2 . /etc/sysconf 2>&-
   3
   4 [ "$FAILSAFE" != "true" ] &&
   5 [ "$BR2_SYSCONF_TELNET_FAILSAFE_ONLY" = "y" ] &&
   6 {
   7   grep '^root:[^!]' /etc/passwd >&- 2>&- &&
   8   {
   9     echo "Login failed."
  10     exit 0
  11   } || {
  12 cat << EOF
  13  === IMPORTANT ============================
  14   Use 'passwd' to set your login password
  15   this will disable telnet and enable SSH
  16  ------------------------------------------
  17 EOF
  18   }
  19 }
  20 exec /bin/ash --login