http://dev.mysql.com/doc/refman/5.1/ja/perror.html
へぇ。こんなのあったんだ。
# mysql -u root
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
# perror 2
OS error code 2: No such file or directory
# perror {1..200} OS error code 1: Operation not permitted OS error code 2: No such file or directory OS error code 3: No such process OS error code 4: Interrupted system call OS error code 5: Input/output error OS error code 6: No such device or address OS error code 7: Argument list too long OS error code 8: Exec format error OS error code 9: Bad file descriptor OS error code 10: No child processes …(略) MySQL error code 147: Lock table is full; Restart program with a larger locktable MySQL error code 148: Updates are not allowed under a read only transactions MySQL error code 149: Lock deadlock; Retry transaction MySQL error code 150: Foreign key constraint is incorrectly formed MySQL error code 151: Cannot add a child row MySQL error code 152: Cannot delete a parent row
152番までずらずら出てきた。