linux 编程里errno的值

find /usr/include -iname "*errno*.h" -type f -print0 | xargs -r0 grep -rE -w 'E.+\s[0-9]+' | cut -d'#' -f2 |sed -r -e 's/^[[:space:]]+//g' | sort -k3,3n | uniq -f 3 > errno.txt

cat errno.txt
define    EPERM         1    /* Operation not permitted */
define    ENOENT         2    /* No such file or directory */
define    ESRCH         3    /* No such process */
define    EINTR         4    /* Interrupted system call */
define    EIO         5    /* I/O error */
define    ENXIO         6    /* No such device or address */
define    E2BIG         7    /* Argument list too long */
define    ENOEXEC         8    /* Exec format error */
define    EBADF         9    /* Bad file number */
define    ECHILD        10    /* No child processes */
define    EAGAIN        11    /* Try again */
define    ENOMEM        12    /* Out of memory */
define    EACCES        13    /* Permission denied */
define    EFAULT        14    /* Bad address */
define    ENOTBLK        15    /* Block device required */
define    EBUSY        16    /* Device or resource busy */
define    EEXIST        17    /* File exists */
define    EXDEV        18    /* Cross-device link */
define    ENODEV        19    /* No such device */
define    ENOTDIR        20    /* Not a directory */
define    EISDIR        21    /* Is a directory */
define    EINVAL        22    /* Invalid argument */
define    ENFILE        23    /* File table overflow */
define    EMFILE        24    /* Too many open files */
define    ENOTTY        25    /* Not a typewriter */
define    ETXTBSY        26    /* Text file busy */
define    EFBIG        27    /* File too large */
define    ENOSPC        28    /* No space left on device */
define    ESPIPE        29    /* Illegal seek */
define    EROFS        30    /* Read-only file system */
define    EMLINK        31    /* Too many links */
define    EPIPE        32    /* Broken pipe */
define    EDOM        33    /* Math argument out of domain of func */
define EDOM    33    /* Math argument out of domain of function.  */
define ERANGE    34    /* Math result not representable.  */
define    ERANGE        34    /* Math result not representable */
define    EDEADLK        35    /* Resource deadlock would occur */
define    ENAMETOOLONG    36    /* File name too long */
define    ENOLCK        37    /* No record locks available */
define    ENOSYS        38    /* Function not implemented */
define    ENOTEMPTY    39    /* Directory not empty */
define    ELOOP        40    /* Too many symbolic links encountered */
define    ENOMSG        42    /* No message of desired type */
define    EIDRM        43    /* Identifier removed */
define    ECHRNG        44    /* Channel number out of range */
define    EL2NSYNC    45    /* Level 2 not synchronized */
define    EL3HLT        46    /* Level 3 halted */
define    EL3RST        47    /* Level 3 reset */
define    ELNRNG        48    /* Link number out of range */
define    EUNATCH        49    /* Protocol driver not attached */
define    ENOCSI        50    /* No CSI structure available */
define    EL2HLT        51    /* Level 2 halted */
define    EBADE        52    /* Invalid exchange */
define    EBADR        53    /* Invalid request descriptor */
define    EXFULL        54    /* Exchange full */
define    ENOANO        55    /* No anode */
define    EBADRQC        56    /* Invalid request code */
define    EBADSLT        57    /* Invalid slot */
define    EBFONT        59    /* Bad font file format */
define    ENOSTR        60    /* Device not a stream */
define    ENODATA        61    /* No data available */
define    ETIME        62    /* Timer expired */
define    ENOSR        63    /* Out of streams resources */
define    ENONET        64    /* Machine is not on the network */
define    ENOPKG        65    /* Package not installed */
define    EREMOTE        66    /* Object is remote */
define    ENOLINK        67    /* Link has been severed */
define    EADV        68    /* Advertise error */
define    ESRMNT        69    /* Srmount error */
define    ECOMM        70    /* Communication error on send */
define    EPROTO        71    /* Protocol error */
define    EMULTIHOP    72    /* Multihop attempted */
define    EDOTDOT        73    /* RFS specific error */
define    EBADMSG        74    /* Not a data message */
define    EOVERFLOW    75    /* Value too large for defined data type */
define    ENOTUNIQ    76    /* Name not unique on network */
define    EBADFD        77    /* File descriptor in bad state */
define    EREMCHG        78    /* Remote address changed */
define    ELIBACC        79    /* Can not access a needed shared library */
define    ELIBBAD        80    /* Accessing a corrupted shared library */
define    ELIBSCN        81    /* .lib section in a.out corrupted */
define    ELIBMAX        82    /* Attempting to link in too many shared libraries */
define    ELIBEXEC    83    /* Cannot exec a shared library directly */
define EILSEQ    84    /* Illegal byte sequence.  */
define    EILSEQ        84    /* Illegal byte sequence */
define    ERESTART    85    /* Interrupted system call should be restarted */
define    ESTRPIPE    86    /* Streams pipe error */
define    EUSERS        87    /* Too many users */
define    ENOTSOCK    88    /* Socket operation on non-socket */
define    EDESTADDRREQ    89    /* Destination address required */
define    EMSGSIZE    90    /* Message too long */
define    EPROTOTYPE    91    /* Protocol wrong type for socket */
define    ENOPROTOOPT    92    /* Protocol not available */
define    EPROTONOSUPPORT    93    /* Protocol not supported */
define    ESOCKTNOSUPPORT    94    /* Socket type not supported */
define    EOPNOTSUPP    95    /* Operation not supported on transport endpoint */
define    EPFNOSUPPORT    96    /* Protocol family not supported */
define    EAFNOSUPPORT    97    /* Address family not supported by protocol */
define    EADDRINUSE    98    /* Address already in use */
define    EADDRNOTAVAIL    99    /* Cannot assign requested address */
define    ENETDOWN    100    /* Network is down */
define    ENETUNREACH    101    /* Network is unreachable */
define    ENETRESET    102    /* Network dropped connection because of reset */
define    ECONNABORTED    103    /* Software caused connection abort */
define    ECONNRESET    104    /* Connection reset by peer */
define    ENOBUFS        105    /* No buffer space available */
define    EISCONN        106    /* Transport endpoint is already connected */
define    ENOTCONN    107    /* Transport endpoint is not connected */
define    ESHUTDOWN    108    /* Cannot send after transport endpoint shutdown */
define    ETOOMANYREFS    109    /* Too many references: cannot splice */
define    ETIMEDOUT    110    /* Connection timed out */
define    ECONNREFUSED    111    /* Connection refused */
define    EHOSTDOWN    112    /* Host is down */
define    EHOSTUNREACH    113    /* No route to host */
define    EALREADY    114    /* Operation already in progress */
define    EINPROGRESS    115    /* Operation now in progress */
define    ESTALE        116    /* Stale NFS file handle */
define    EUCLEAN        117    /* Structure needs cleaning */
define    ENOTNAM        118    /* Not a XENIX named type file */
define    ENAVAIL        119    /* No XENIX semaphores available */
define    EISNAM        120    /* Is a named type file */
define    EREMOTEIO    121    /* Remote I/O error */
define    EDQUOT        122    /* Quota exceeded */
define    ENOMEDIUM    123    /* No medium found */
define    EMEDIUMTYPE    124    /* Wrong medium type */
define ECANCELED    125
define    ECANCELED    125    /* Operation Canceled */
define    ENOKEY        126    /* Required key not available */
define    EKEYEXPIRED    127    /* Key has expired */
define    EKEYREVOKED    128    /* Key has been revoked */
define    EKEYREJECTED    129    /* Key was rejected by service */
define EOWNERDEAD        130
define    EOWNERDEAD    130    /* Owner died */
define ENOTRECOVERABLE    131
define    ENOTRECOVERABLE    131    /* State not recoverable */
define ERFKILL        132
define ERFKILL        132    /* Operation not possible due to RF-kill */
define EHWPOISON    133    /* Memory page has hardware error */