Return Codes:
When computer programs are executed, the operating system creates an abstract entity called a
The process that spawns another is called a parent process , while those created are child processes. Child processes run concurrently with the parent process.
The technique of spawning child processes is used to delegate some work to a child process when there is no reason to stop the execution of the parent. When the child finishes executing, it exits by calling the exit system call . This system call facilitates passing the exit status code back to the parent, which can retrieve this value using the wait system call.
There is no straight way to get return code when it come to Linux/AIX operating systems.I found indirect method. Always 0 = Success anything else is an error.
Linux:
Commmand: # perl -le 'print $!+0, "\t", $!++ for 0..127'
0
1 Operation not permitted
2 No such file or directory
3 No such process
4 Interrupted system call
5 Input/output error
6 No such device or address
7 Argument list too long
8 Exec format error
9 Bad file descriptor
10 No child processes
11 Resource temporarily unavailable
12 Cannot allocate memory
13 Permission denied
14 Bad address
15 Block device required
16 Device or resource busy
17 File exists
18 Invalid cross-device link
19 No such device
20 Not a directory
21 Is a directory
22 Invalid argument
23 Too many open files in system
24 Too many open files
25 Inappropriate ioctl for device
26 Text file busy
27 File too large
28 No space left on device
29 Illegal seek
30 Read-only file system
31 Too many links
32 Broken pipe
33 Numerical argument out of domain
34 Numerical result out of range
35 Resource deadlock avoided
36 File name too long
37 No locks available
38 Function not implemented
39 Directory not empty
40 Too many levels of symbolic links
41 Unknown error 41
42 No message of desired type
43 Identifier removed
44 Channel number out of range
45 Level 2 not synchronized
46 Level 3 halted
47 Level 3 reset
48 Link number out of range
49 Protocol driver not attached
50 No CSI structure available
51 Level 2 halted
52 Invalid exchange
53 Invalid request descriptor
54 Exchange full
55 No anode
56 Invalid request code
57 Invalid slot
58 Unknown error 58
59 Bad font file format
60 Device not a stream
61 No data available
62 Timer expired
63 Out of streams resources
64 Machine is not on the network
65 Package not installed
66 Object is remote
67 Link has been severed
68 Advertise error
69 Srmount error
70 Communication error on send
71 Protocol error
72 Multihop attempted
73 RFS specific error
74 Bad message
75 Value too large for defined data type
76 Name not unique on network
77 File descriptor in bad state
78 Remote address changed
79 Can not access a needed shared library
80 Accessing a corrupted shared library
81 .lib section in a.out corrupted
82 Attempting to link in too many shared libraries
83 Cannot exec a shared library directly
84 Invalid or incomplete multibyte or wide character
85 Interrupted system call should be restarted
86 Streams pipe error
87 Too many users
88 Socket operation on non-socket
89 Destination address required
90 Message too long
91 Protocol wrong type for socket
92 Protocol not available
93 Protocol not supported
94 Socket type not supported
95 Operation not supported
96 Protocol family not supported
97 Address family not supported by protocol
98 Address already in use
99 Cannot assign requested address
100 Network is down
101 Network is unreachable
102 Network dropped connection on reset
103 Software caused connection abort
104 Connection reset by peer
105 No buffer space available
106 Transport endpoint is already connected
107 Transport endpoint is not connected
108 Cannot send after transport endpoint shutdown
109 Too many references: cannot splice
110 Connection timed out
111 Connection refused
112 Host is down
113 No route to host
114 Operation already in progress
115 Operation now in progress
116 Stale NFS file handle
117 Structure needs cleaning
118 Not a XENIX named type file
119 No XENIX semaphores available
120 Is a named type file
121 Remote I/O error
122 Disk quota exceeded
123 No medium found
124 Wrong medium type
125 Operation canceled
126 Required key not available
127 Key has expired
AIX:
Commmand: # perl -le 'print $!+0, "\t", $!++ for 0..127'
0
1 Not owner
2 No such file or directory
3 No such process
4 Interrupted system call
5 I/O error
6 No such device or address
7 Arg list too long
8 Exec format error
9 Bad file number
10 No child processes
11 Resource temporarily unavailable
12 Not enough space
13 Permission denied
14 Bad address
15 Block device required
16 Device busy
17 File exists
18 Cross-device link
19 No such device
20 Not a directory
21 Is a directory
22 Invalid argument
23 File table overflow
24 Too many open files
25 Not a typewriter
26 Text file busy
27 File too large
28 No space left on device
29 Illegal seek
30 Read-only file system
31 Too many links
32 Broken pipe
33 Argument out of domain
34 Result too large
35 No message of desired type
36 Identifier removed
37 Channel number out of range
38 Level 2 not synchronized
39 Level 3 halted
40 Level 3 reset
41 Link number out of range
42 Protocol driver not attached
43 No CSI structure available
44 Level 2 halted
45 Deadlock condition if locked
46 Device not ready
47 Write-protected media
48 Unformatted or incompatible media
49 No locks available
50 Cannot Establish Connection
51 Connection Down
52 Missing file or filesystem
53 Requests blocked by Administrator
54 Operation would block
55 Operation now in progress
56 Operation already in progress
57 Socket operation on non-socket
58 Destination address required
59 Message too long
60 Protocol wrong type for socket
61 Protocol not available
62 Protocol not supported
63 Socket type not supported
64 Operation not supported on socket
65 Protocol family not supported
66 Addr family not supported by protocol
67 Address already in use
68 Can't assign requested address
69 Network is down
70 Network is unreachable
71 Network dropped connection on reset
72 Software caused connection abort
73 Connection reset by peer
74 No buffer space available
75 Socket is already connected
76 Socket is not connected
77 Can't send after socket shutdown
78 Connection timed out
79 Connection refused
80 Host is down
81 No route to host
82 Restart the system call
83 Too many processes
84 Too many users
85 Too many levels of symbolic links
86 File name too long
87 Directory not empty
88 Disk quota exceeded
89 Invalid file system control data detected
90 For future use
91 For future use
92 For future use
93 Item is not local to host
94 For future use
95 For future use
96 For future use
97 For future use
98 For future use
99 For future use
100 For future use
101 For future use
102 For future use
103 For future use
104 For future use
105 For future use
106 For future use
107 For future use
108 For future use
109 Function not implemented
110 Media surface error
111 I/O completed, but needs relocation
112 No attribute found
113 Security Authentication Denied
114 Not a Trusted Program
115 Too many references: can't splice
116 Invalid wide character
117 Asynchronous I/O cancelled
118 Out of STREAMS resources
119 System call timed out
120 Next message has wrong type
121 Error in protocol
122 No message on stream head read q
123 fd not associated with a stream
124 Unsupported attribute value
125 Multihop is not allowed
126 The server link has been severed
127 Value too large to be stored in data type
1 Not owner
2 No such file or directory
3 No such process
4 Interrupted system call
5 I/O error
6 No such device or address
7 Arg list too long
8 Exec format error
9 Bad file number
10 No child processes
11 Resource temporarily unavailable
12 Not enough space
13 Permission denied
14 Bad address
15 Block device required
16 Device busy
17 File exists
18 Cross-device link
19 No such device
20 Not a directory
21 Is a directory
22 Invalid argument
23 File table overflow
24 Too many open files
25 Not a typewriter
26 Text file busy
27 File too large
28 No space left on device
29 Illegal seek
30 Read-only file system
31 Too many links
32 Broken pipe
33 Argument out of domain
34 Result too large
35 No message of desired type
36 Identifier removed
37 Channel number out of range
38 Level 2 not synchronized
39 Level 3 halted
40 Level 3 reset
41 Link number out of range
42 Protocol driver not attached
43 No CSI structure available
44 Level 2 halted
45 Deadlock condition if locked
46 Device not ready
47 Write-protected media
48 Unformatted or incompatible media
49 No locks available
50 Cannot Establish Connection
51 Connection Down
52 Missing file or filesystem
53 Requests blocked by Administrator
54 Operation would block
55 Operation now in progress
56 Operation already in progress
57 Socket operation on non-socket
58 Destination address required
59 Message too long
60 Protocol wrong type for socket
61 Protocol not available
62 Protocol not supported
63 Socket type not supported
64 Operation not supported on socket
65 Protocol family not supported
66 Addr family not supported by protocol
67 Address already in use
68 Can't assign requested address
69 Network is down
70 Network is unreachable
71 Network dropped connection on reset
72 Software caused connection abort
73 Connection reset by peer
74 No buffer space available
75 Socket is already connected
76 Socket is not connected
77 Can't send after socket shutdown
78 Connection timed out
79 Connection refused
80 Host is down
81 No route to host
82 Restart the system call
83 Too many processes
84 Too many users
85 Too many levels of symbolic links
86 File name too long
87 Directory not empty
88 Disk quota exceeded
89 Invalid file system control data detected
90 For future use
91 For future use
92 For future use
93 Item is not local to host
94 For future use
95 For future use
96 For future use
97 For future use
98 For future use
99 For future use
100 For future use
101 For future use
102 For future use
103 For future use
104 For future use
105 For future use
106 For future use
107 For future use
108 For future use
109 Function not implemented
110 Media surface error
111 I/O completed, but needs relocation
112 No attribute found
113 Security Authentication Denied
114 Not a Trusted Program
115 Too many references: can't splice
116 Invalid wide character
117 Asynchronous I/O cancelled
118 Out of STREAMS resources
119 System call timed out
120 Next message has wrong type
121 Error in protocol
122 No message on stream head read q
123 fd not associated with a stream
124 Unsupported attribute value
125 Multihop is not allowed
126 The server link has been severed
127 Value too large to be stored in data type
Thanks !!!
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