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Top Forums Shell Programming and Scripting Script FTP maintain error handling Post 302899213 by rbatte1 on Monday 28th of April 2014 05:29:19 AM
Old 04-28-2014
Typically, ftp will issue you an error if there is a problem with the ftp command execution itself, but I presume you want error handling for the actual file transfers. That gives you a slight problem, but if you can put on a -v flag, then hopefully the output will be studded with three digit response codes.

Those below 400 are normal successful execution, those 400 & above are errors.

If you capture all the output into a file, you can search that file for errors. These will be lines starting 400 or higher, along with anything saying any of the following
  • Not connected
  • cannot access
  • not found
  • No such file
However, you will have to exclude the success output from a good transfer that just happens to have a few hundred bytes, e.g.:-499 bytes sent is not an error.

The way we do it is to have a list of questionable items to search for and then a list of exclusions from that list. We pass the output through both tests and then we can work out whether we've done it or not. Probably best to move one file at a time too if you can. If you have lots to move, just call them in a loop and you immediately have more information about which one has failed.



Have a go an let us know how you get on.



I hope that this helps,
Robin
Liverpool/Blackburn
UK
 

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UPSCLI_LIST_START(3)						    NUT Manual						      UPSCLI_LIST_START(3)

NAME
upscli_list_start - begin multi-item retrieval from a UPS SYNOPSIS
#include <upsclient.h> int upscli_list_start(UPSCONN_t *ups, int numq, const char **query) DESCRIPTION
The upscli_list_start() function takes the pointer ups to a UPSCONN_t state structure, and the pointer query to an array of numq query elements. It builds a properly-formatted request from those elements and transmits it to upsd(8). Upon success, the caller must call upscli_list_next(3) to retrieve the elements of the list. Failure to retrieve the list will most likely result in the client getting out of sync with the server due to buffered data. USES
This function implements the "LIST" command in the protocol. As a result, you can use it to request many different things from the server. Some examples are: o LIST UPS o LIST VAR <ups> o LIST RW <ups> o LIST CMD <ups> o LIST ENUM <ups> <var> o LIST RANGE <ups> <var> QUERY FORMATTING
To see the list of variables on a UPS called su700, the protocol command would be LIST VAR su700. To start that list with this function, you would populate query and numq as follows: int numq; const char *query[2]; query[0] = "VAR"; query[1] = "su700"; numq = 2; All escaping of special characters and quoting of elements with spaces are handled for you inside this function. ERROR CHECKING
This function checks the response from upsd(8) against your query. If it is not starting a list, or is starting the wrong type of list, it will return an error code. When this happens, upscli_upserror(3) will return UPSCLI_ERR_PROTOCOL. RETURN VALUE
The upscli_list_start() function returns 0 on success, or -1 if an error occurs. SEE ALSO
upscli_fd(3), upscli_get(3), upscli_readline(3), upscli_sendline(3), upscli_ssl(3), upscli_strerror(3), upscli_upserror(3) Network UPS Tools 05/31/2012 UPSCLI_LIST_START(3)
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