find /usr -name sysexits.h
/*
* SYSEXITS.H -- Exit status codes for system programs.
*
* This include file attempts to categorize possible error
* exit statuses for system programs, notably delivermail
* and the Berkeley network.
*
* Error numbers begin at EX__BASE to reduce the possibility of
* clashing with other exit statuses that random programs may
* already return. The meaning of the codes is approximately
* as follows:
*
* EX_USAGE -- The command was used incorrectly, e.g., with
* the wrong number of arguments, a bad flag, a bad
* syntax in a parameter, or whatever.
* EX_DATAERR -- The input data was incorrect in some way.
* This should only be used for user's data & not
* system files.
* EX_NOINPUT -- An input file (not a system file) did not
* exist or was not readable. This could also include
* errors like "No message" to a mailer (if it cared
* to catch it).
* EX_NOUSER -- The user specified did not exist. This might
* be used for mail addresses or remote logins.
* EX_NOHOST -- The host specified did not exist. This is used
* in mail addresses or network requests.
* EX_UNAVAILABLE -- A service is unavailable. This can occur
* if a support program or file does not exist. This
* can also be used as a catchall message when something
* you wanted to do doesn't work, but you don't know
* why.
* EX_SOFTWARE -- An internal software error has been detected.
* This should be limited to non-operating system related
* errors as possible.
* EX_OSERR -- An operating system error has been detected.
* This is intended to be used for such things as "cannot
* fork", "cannot create pipe", or the like. It includes
* things like getuid returning a user that does not
* exist in the passwd file.
* EX_OSFILE -- Some system file (e.g., /etc/passwd, /etc/utmp,
* etc.) does not exist, cannot be opened, or has some
* sort of error (e.g., syntax error).
* EX_CANTCREAT -- A (user specified) output file cannot be
* created.
* EX_IOERR -- An error occurred while doing I/O on some file.
* EX_TEMPFAIL -- temporary failure, indicating something that
* is not really an error. In sendmail, this means
* that a mailer (e.g.) could not create a connection,
* and the request should be reattempted later.
* EX_PROTOCOL -- the remote system returned something that
* was "not possible" during a protocol exchange.
* EX_NOPERM -- You did not have sufficient permission to
* perform the operation. This is not intended for
* file system problems, which should use NOINPUT or
* CANTCREAT, but rather for higher level permissions.
*/
#define EX_OK 0 /* successful termination */
#define EX__BASE 64 /* base value for error messages */
#define EX_USAGE 64 /* command line usage error */
#define EX_DATAERR 65 /* data format error */
#define EX_NOINPUT 66 /* cannot open input */
#define EX_NOUSER 67 /* addressee unknown */
#define EX_NOHOST 68 /* host name unknown */
#define EX_UNAVAILABLE 69 /* service unavailable */
#define EX_SOFTWARE 70 /* internal software error */
#define EX_OSERR 71 /* system error (e.g., can't fork) */
#define EX_OSFILE 72 /* critical OS file missing */
#define EX_CANTCREAT 73 /* can't create (user) output file */
#define EX_IOERR 74 /* input/output error */
#define EX_TEMPFAIL 75 /* temp failure; user is invited to retry */
#define EX_PROTOCOL 76 /* remote error in protocol */
#define EX_NOPERM 77 /* permission denied */
#define EX_CONFIG 78 /* configuration error */
#define EX__MAX 78 /* maximum listed value */
#endif /* sysexits.h */
Exit Codes With Special Meanings
man 3 sysexits