我可以知道在unix中的scp命令的退出状态

使用scp命令在perl中进行编程时,
如果你告诉哪个退出值(除了0-成功,1-error)是为了我的生活将是简单的,我面对scp命令的退出状态

从这里:

0   Operation was successful
1   General error in file copy
2   Destination is not directory, but it should be
3   Maximum symlink level exceeded
4   Connecting to host failed.
5   Connection broken
6   File does not exist
7   No permission to access file.
8   General error in sftp protocol
9   File transfer protocol mismatch
10  No file matches a given criteria
65  Host not allowed to connect
66  General error in ssh protocol
67  Key exchange failed
68  Reserved
69  MAC error
70  Compression error
71  Service not available
72  Protocol version not supported
73  Host key not verifiable
74  Connection failed
75  Disconnected by application
76  Too many connections
77  Authentication cancelled by user
78  No more authentication methods available
79  Invalid user name