Differences
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| 2008-04-20 | 2008-04-20 | ||
| no summary (70.141.124.42) (hidden) | Restored revision 1207817680. Undoing revision 1208725417. (martin) (hidden) | ||
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| ===== Protocol Comparison ===== | ===== Protocol Comparison ===== | ||
| - | The list below shows only those features which differ between the protocols, so it is not complete lis | + | The list below shows only those features which differ between the protocols, so it is not complete listing. |
| + | |||
| + | ^ Feature ^ SFTP ^ FTP ^ SCP ^ | ||
| + | ^ Security | Secure (SSH) | Insecure. Secure variants (FTP over SSL) unsupported by WinSCP. | Secure (SSH). | | ||
| + | ^ Speed | Generally slowest (encryption and necessity to wait for packet confirmations). | Generally fastest file transfer (no encryption and efficient file transfer), yet transfer setup is slow, so transfer of large number of small files can be slow. | Medium (encryption, but efficient file transfer, yet it does not allow the transfer to be interrupted). | | ||
| + | ^ [[resume|Transfer resume]] | Supported. WinSCP supports resuming only since SFTP-2 (which introduces rename command). | Supported. | Unsupported. | | ||
| + | ^ Large files | Supports files over 4 GiB (uses 64-bit sizes). | Supports files over 4 GiB. | Does not support files over 4 GiB (32-bit boundary). | | ||
| + | ^ Append to end of file | Supported. | Unsupported. | Unsupported. | | ||
| + | ^ [[ui_progress#controlling_the_operation|Transfer cancellation]] | Supported. | Supported, but can be time-consuming. | Transfer cannot be canceled without termination of session. | | ||
| + | ^ Text (ASCII) [[transfer_mode|transfer mode]] | Supported since SFTP-4. For older versions WinSCP emulates text mode by converting files before transfer. | Supported. | Not supported by the protocol. WinSCP emulates text mode by converting file before transfer. | | ||
| + | ^ Directory operations | Recursive operations with directories (deletion, permissions change) must be performed separately for each file. Thus operations can take a long time, especially for directories with a large number of files. || Recursive operations with directories (deletion, permissions change), can be done with a single command (''rm'', ''chmod'', etc). Thus they are quick. On the other hand it limits some functionality. | | ||
| + | ^ [[task_rename|File renaming]] and [[task_move_duplicate#moving_remote_files|moving]] | Supported since SFTP-2. | Supported. | Supported (''mv''). | | ||
| + | ^ Direct [[task_move_duplicate#duplicating_remote_files|File duplication]] | Unsupported by the protocol. WinSCP can open a [[shell_session|separate shell session]] to execute the command. | Unsupported. | Supported (''cp''). | | ||
| + | ^ [[remote_command|Execution of arbitrary command]] | Unsupported by the protocol. WinSCP can open a [[shell_session|separate shell session]] to execute the command. | Unsupported. WinSCP allows user to execute arbitrary protocol command. | Supported as long as the command does not require user input. | | ||
| + | ^ [[ui_transfer#upload_options|Setting properties (time-stamp, permissions) of uploaded files]] | Supported. | Supported by some servers. Unsupported by WinSCP. | Supported. | | ||
| + | ^ [[task_properties|Owner or group change]] | In SFTP-2 and SFTP-3, the owner and group can be changed only with knowledge of UID/GID (unsupported by WinSCP). Since SFTP-4 even change using user or group name is allowed. | Unsupported. | Supported (''chown'', ''chgrp''). | | ||
| + | ^ [[ui_properties#checksum|Checksum calculation]] | Supported, if the server supports respective SFTP protocol extension. | Unsupported. | Unsupported. | | ||
| + | ^ [[task_link|Link creation]] | It is possible to create and edit symbolic links since SFTP-3. Hard links are supported only since SFTP-6 (unsupported by WinSCP). | Unsupported. | It is possible to create both symbolic and hard links (''ln''). Symbolic links can be edited also. | | ||
| + | ^ User group list lookup | Unsupported. | Unsupported. | Supported (''groups''). | | ||
| + | ^ Influence of environment variables | Generally unaffected by environment variables. || As WinSCP uses shell, it is influenced by environment variables (date format, etc.). WinSCP requires the English environment. See [[requirements]]. | | ||
| + | ^ File modification [[timestamp|time-stamp]] | Theoretically the problem does not occur, as the protocol requires timestamps to be in UTC. Practically some of the SFTP servers have problems with DST. | | Some shell commands are influenced by daylight-saving time. For example, the ''ls'' command can return a different time than ''scp''. Thus, after transfer, the time-stamp of the file can be different. Also there can be an additional difference caused by the server timezone offset. This causes trouble when comparing directories and [[task_synchronize|synchronization]]. | | ||
| + | ^ [[ui_login|Configuration]] | Generally, only login information is needed. || For a successful connection to a server it is often necessary to properly set up several configuration options on the [[ui_login_scp|Login dialog]]. | | ||