kylefurlong/errno

## errno
function errno() { (grep "^$1 " ~/errno.db || cat ~/errno.db) }

## errno.db
1     EPERM             Operation not permitted
2     ENOENT            No such file or directory
3     ESRCH             No such process
4     EINTR             Interrupted system call
5     EIO               I/O error
6     ENXIO             No such device or address
7     E2BIG             Argument list too long
8     ENOEXEC           Exec format error
9     EBADF             Bad file number
10    ECHILD            No child processes
11    EAGAIN            Try again
12    ENOMEM            Out of memory
13    EACCES            Permission denied
14    EFAULT            Bad address
15    ENOTBLK           Block device required
16    EBUSY             Device or resource busy
17    EEXIST            File exists
18    EXDEV             Cross-device link
19    ENODEV            No such device
20    ENOTDIR           Not a directory
21    EISDIR            Is a directory
22    EINVAL            Invalid argument
23    ENFILE            File table overflow
24    EMFILE            Too many open files
25    ENOTTY            Not a typewriter
26    ETXTBSY           Text file busy
27    EFBIG             File too large
28    ENOSPC            No space left on device
29    ESPIPE            Illegal seek
30    EROFS             Read-only file system
31    EMLINK            Too many links
32    EPIPE             Broken pipe
33    EDOM              Math argument out of domain of func
34    ERANGE            Math result not representable
35    EDEADLK           Resource deadlock would occur
36    ENAMETOOLONG      File name too long
37    ENOLCK            No record locks available
38    ENOSYS            Function not implemented
39    ENOTEMPTY         Directory not empty
40    ELOOP             Too many symbolic links encountered
42    ENOMSG            No message of desired type
43    EIDRM             Identifier removed
44    ECHRNG            Channel number out of range
45    EL2NSYNC          Level 2 not synchronized
46    EL3HLT            Level 3 halted
47    EL3RST            Level 3 reset
48    ELNRNG            Link number out of range
49    EUNATCH           Protocol driver not attached
50    ENOCSI            No CSI structure available
51    EL2HLT            Level 2 halted
52    EBADE             Invalid exchange
53    EBADR             Invalid request descriptor
54    EXFULL            Exchange full
55    ENOANO            No anode
56    EBADRQC           Invalid request code
57    EBADSLT           Invalid slot
59    EBFONT            Bad font file format
60    ENOSTR            Device not a stream
61    ENODATA           No data available
62    ETIME             Timer expired
63    ENOSR             Out of streams resources
64    ENONET            Machine is not on the network
65    ENOPKG            Package not installed
66    EREMOTE           Object is remote
67    ENOLINK           Link has been severed
68    EADV              Advertise error
69    ESRMNT            Srmount error
70    ECOMM             Communication error on send
71    EPROTO            Protocol error
72    EMULTIHOP         Multihop attempted
73    EDOTDOT           RFS specific error
74    EBADMSG           Not a data message
75    EOVERFLOW         Value too large for defined data type
76    ENOTUNIQ          Name not unique on network
77    EBADFD            File descriptor in bad state
78    EREMCHG           Remote address changed
79    ELIBACC           Can not access a needed shared library
80    ELIBBAD           Accessing a corrupted shared library
81    ELIBSCN           .lib section in a.out corrupted
82    ELIBMAX           Attempting to link in too many shared libraries
83    ELIBEXEC          Cannot exec a shared library directly
84    EILSEQ            Illegal byte sequence
85    ERESTART          Interrupted system call should be restarted
86    ESTRPIPE          Streams pipe error
87    EUSERS            Too many users
88    ENOTSOCK          Socket operation on non-socket
89    EDESTADDRREQ      Destination address required
90    EMSGSIZE          Message too long
91    EPROTOTYPE        Protocol wrong type for socket
92    ENOPROTOOPT       Protocol not available
93    EPROTONOSUPPORT   Protocol not supported
94    ESOCKTNOSUPPORT   Socket type not supported
95    EOPNOTSUPP        Operation not supported on transport endpoint
96    EPFNOSUPPORT      Protocol family not supported
97    EAFNOSUPPORT      Address family not supported by protocol
98    EADDRINUSE        Address already in use
99    EADDRNOTAVAIL     Cannot assign requested address
100   ENETDOWN          Network is down
101   ENETUNREACH       Network is unreachable
102   ENETRESET         Network dropped connection because of reset
103   ECONNABORTED      Software caused connection abort
104   ECONNRESET        Connection reset by peer
105   ENOBUFS           No buffer space available
106   EISCONN           Transport endpoint is already connected
107   ENOTCONN          Transport endpoint is not connected
108   ESHUTDOWN         Cannot send after transport endpoint shutdown
109   ETOOMANYREFS      Too many references: cannot splice
110   ETIMEDOUT         Connection timed out
111   ECONNREFUSED      Connection refused
112   EHOSTDOWN         Host is down
113   EHOSTUNREACH      No route to host
114   EALREADY          Operation already in progress
115   EINPROGRESS       Operation now in progress
116   ESTALE            Stale NFS file handle
117   EUCLEAN           Structure needs cleaning
118   ENOTNAM           Not a XENIX named type file
119   ENAVAIL           No XENIX semaphores available
120   EISNAM            Is a named type file
121   EREMOTEIO         Remote I/O error
122   EDQUOT            Quota exceeded
123   ENOMEDIUM         No medium found
124   EMEDIUMTYPE       Wrong medium type
125   ECANCELED         Operation Canceled
126   ENOKEY            Required key not available
127   EKEYEXPIRED       Key has expired
128   EKEYREVOKED       Key has been revoked
129   EKEYREJECTED      Key was rejected by service
130   EOWNERDEAD        Owner died
131   ENOTRECOVERABLE   State not recoverable

## example
$ errno
1     EPERM             Operation not permitted
2     ENOENT            No such file or directory
3     ESRCH             No such process
4     EINTR             Interrupted system call
...
$ errno 55
55    ENOANO            No anode
$ ??
	1 EPERM Operation not permitted
	2 ENOENT No such file or directory
	3 ESRCH No such process
	4 EINTR Interrupted system call
	5 EIO I/O error
	6 ENXIO No such device or address
	7 E2BIG Argument list too long
	8 ENOEXEC Exec format error
	9 EBADF Bad file number
	10 ECHILD No child processes
	11 EAGAIN Try again
	12 ENOMEM Out of memory
	13 EACCES Permission denied
	14 EFAULT Bad address
	15 ENOTBLK Block device required
	16 EBUSY Device or resource busy
	17 EEXIST File exists
	18 EXDEV Cross-device link
	19 ENODEV No such device
	20 ENOTDIR Not a directory
	21 EISDIR Is a directory
	22 EINVAL Invalid argument
	23 ENFILE File table overflow
	24 EMFILE Too many open files
	25 ENOTTY Not a typewriter
	26 ETXTBSY Text file busy
	27 EFBIG File too large
	28 ENOSPC No space left on device
	29 ESPIPE Illegal seek
	30 EROFS Read-only file system
	31 EMLINK Too many links
	32 EPIPE Broken pipe
	33 EDOM Math argument out of domain of func
	34 ERANGE Math result not representable
	35 EDEADLK Resource deadlock would occur
	36 ENAMETOOLONG File name too long
	37 ENOLCK No record locks available
	38 ENOSYS Function not implemented
	39 ENOTEMPTY Directory not empty
	40 ELOOP Too many symbolic links encountered
	42 ENOMSG No message of desired type
	43 EIDRM Identifier removed
	44 ECHRNG Channel number out of range
	45 EL2NSYNC Level 2 not synchronized
	46 EL3HLT Level 3 halted
	47 EL3RST Level 3 reset
	48 ELNRNG Link number out of range
	49 EUNATCH Protocol driver not attached
	50 ENOCSI No CSI structure available
	51 EL2HLT Level 2 halted
	52 EBADE Invalid exchange
	53 EBADR Invalid request descriptor
	54 EXFULL Exchange full
	55 ENOANO No anode
	56 EBADRQC Invalid request code
	57 EBADSLT Invalid slot
	59 EBFONT Bad font file format
	60 ENOSTR Device not a stream
	61 ENODATA No data available
	62 ETIME Timer expired
	63 ENOSR Out of streams resources
	64 ENONET Machine is not on the network
	65 ENOPKG Package not installed
	66 EREMOTE Object is remote
	67 ENOLINK Link has been severed
	68 EADV Advertise error
	69 ESRMNT Srmount error
	70 ECOMM Communication error on send
	71 EPROTO Protocol error
	72 EMULTIHOP Multihop attempted
	73 EDOTDOT RFS specific error
	74 EBADMSG Not a data message
	75 EOVERFLOW Value too large for defined data type
	76 ENOTUNIQ Name not unique on network
	77 EBADFD File descriptor in bad state
	78 EREMCHG Remote address changed
	79 ELIBACC Can not access a needed shared library
	80 ELIBBAD Accessing a corrupted shared library
	81 ELIBSCN .lib section in a.out corrupted
	82 ELIBMAX Attempting to link in too many shared libraries
	83 ELIBEXEC Cannot exec a shared library directly
	84 EILSEQ Illegal byte sequence
	85 ERESTART Interrupted system call should be restarted
	86 ESTRPIPE Streams pipe error
	87 EUSERS Too many users
	88 ENOTSOCK Socket operation on non-socket
	89 EDESTADDRREQ Destination address required
	90 EMSGSIZE Message too long
	91 EPROTOTYPE Protocol wrong type for socket
	92 ENOPROTOOPT Protocol not available
	93 EPROTONOSUPPORT Protocol not supported
	94 ESOCKTNOSUPPORT Socket type not supported
	95 EOPNOTSUPP Operation not supported on transport endpoint
	96 EPFNOSUPPORT Protocol family not supported
	97 EAFNOSUPPORT Address family not supported by protocol
	98 EADDRINUSE Address already in use
	99 EADDRNOTAVAIL Cannot assign requested address
	100 ENETDOWN Network is down
	101 ENETUNREACH Network is unreachable
	102 ENETRESET Network dropped connection because of reset
	103 ECONNABORTED Software caused connection abort
	104 ECONNRESET Connection reset by peer
	105 ENOBUFS No buffer space available
	106 EISCONN Transport endpoint is already connected
	107 ENOTCONN Transport endpoint is not connected
	108 ESHUTDOWN Cannot send after transport endpoint shutdown
	109 ETOOMANYREFS Too many references: cannot splice
	110 ETIMEDOUT Connection timed out
	111 ECONNREFUSED Connection refused
	112 EHOSTDOWN Host is down
	113 EHOSTUNREACH No route to host
	114 EALREADY Operation already in progress
	115 EINPROGRESS Operation now in progress
	116 ESTALE Stale NFS file handle
	117 EUCLEAN Structure needs cleaning
	118 ENOTNAM Not a XENIX named type file
	119 ENAVAIL No XENIX semaphores available
	120 EISNAM Is a named type file
	121 EREMOTEIO Remote I/O error
	122 EDQUOT Quota exceeded
	123 ENOMEDIUM No medium found
	124 EMEDIUMTYPE Wrong medium type
	125 ECANCELED Operation Canceled
	126 ENOKEY Required key not available
	127 EKEYEXPIRED Key has expired
	128 EKEYREVOKED Key has been revoked
	129 EKEYREJECTED Key was rejected by service
	130 EOWNERDEAD Owner died
	131 ENOTRECOVERABLE State not recoverable
	$ errno
	1 EPERM Operation not permitted
	2 ENOENT No such file or directory
	3 ESRCH No such process
	4 EINTR Interrupted system call
	...
	$ errno 55
	55 ENOANO No anode
	$ ??