SCP/Shell Tab

When the Ignore LS warnings checkbox is ticked, WinSCP will ignore any error messages printed by the ls command as long as it produces some regular output too. It also makes WinSCP ignore exit code 1 of the command. The option was added primarily to override pagefile.sys access-error produced by OpenSSH for Windows whenever root directory was opened. However it may be useful even in other situations.

The Try to get full timestamp makes WinSCP attempt to use --full-time option for ls command. It is particularly useful when you want to use some synchronization command, for what you need precise timestamps. When it is ticked, WinSCP will add the option to the first ls command it issues. When the (first) command fails for whatever reason, WinSCP will stop using the option for the whole session. However in some cases WinSCP may fail to detect that the command failed. Then you need to disable the feature manually.

Use the Alias LS to display group name to make WinSCP try to alias ls command to add -g option to force it to list group. WinSCP requires group column in the directory listing.

When Lookup user groups is ticked, WinSCP will use groups command on start-up to list groups the user belongs too. It will then offer the list on Properties dialog to allow user select the group instead of typing it.

During WinSCP start up, you may receive an error indicating a problem with the groups command. Untick the Lookup user groups box. More than likely your Linux environment doesn’t have the groups command available.

On start-up WinSCP will by default clear all aliases on commands it uses. This is done to avoid unexpected behaviour (e.g. alias rm to rm -i). If there are no aliases influencing command behaviour, this feature can be disabled by unticking Clear aliases. This setting speeds up the login process.

WinSCP also clears set of environment variables know to influence the format of directory listing. These are: LANG, LANGUAGE, LC_CTYPE, LC_COLLATE, LC_MONETARY, LC_NUMERIC, LC_TIME, LC_MESSAGES and LC_ALL. If no such variable is set, untick Clear national variables. This setting speeds up the login process.

WinSCP uses scp command to perform the transfer. On some SSH servers, particularly ssh.com, the scp may be a link to scp2 command. The scp2 is in fact SFTP server, that WinSCP cannot talk to in SCP mode. Check Use scp2 with scp1 compat. to make WinSCP try to force the scp command to use really the SCP protocol (using -1 option). Note that if the server supports scp2, it probably supports SFTP protocol too.

The Server timezone offset allows user to counterweight time difference between timestamp of remote file shown in directory listing and timestamp set on downloaded file, and vice versa. The difference is caused by fact that during transfer scp command usually uses UTC time format, while ls command may display time in local (for server) time format. The time difference can be negative. For example if the timestamps of remote files are two hours ahead of local files, set the option to -2 hours. Read about other issues with timestamps.