File transfer to/from Unix/Linux machines

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I need a solution. I tried "quote binary", but it doesn't support the quote command either. Sign up today x. I found this on the web So even if I could switch to binary mode, it doesn't look like that is the answer. I figured it out. The process was that one server ftp'd put to an intermediate server and then we ftp'd get it down from that server via PuTTy. The problem turned out to be that the sending ftp server put wasn't sending in binary mode even though PuTTy was pulling get in binary mode.

Once that was fixed, it worked. It may be, but I figured it out before any response was received. Responses were a long time in coming, so I just tried different things until I figured it out. Question has a verified solution. Sign up with Google. Sign up with LinkedIn. Sign up with Facebook. I would like to receive news, updates and offers from Experts Exchange. All Courses From novice to tech pro — start learning today.

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Usually, you will be using some local machine e. This means you need to know the network name of the CLS. It has two names:. The CLS is located on the Internet at address cst This address is visible anywhere on the Internet, giving you access to the machine without needing to use the Algonquin College VPN.

Use it from home or off-campus. Use the private address when you are on-campus. Rarely, you might be logged in to the CLS and want to connect from the CLS the local machine to another machine the remote machine to transfer a file. Connecting from the local Course Linux Server out to a remote machine e.

The remote machine must be running a file transfer server of some sort, to receive a connection from the CLS. This is not usually the case, so most file transfer is done by running the file transfer software on the local machine and connecting to the CLS as the remote machine. If you fail to provide both accurately, you will be locked out of the CLS after several failed connection attempts.

A common error is to fail to provide your account name to the file transfer program, so that it uses a blank name. Always make sure your CLS userid is being used.

If your IP address gets locked out, follow the directions to get your IP address unlocked. Text files contain lines of text delimited or terminated by an end-of-line character or characters. Here is a Linux example using the od file dumper command to make the newline character visible:. MacOS files may end up over-printed all on one line, due to the missing line feed characters! Some file transfer programs may optionally translate line-endings if they recognize that the file being transferred is a text file.

To copy files using Windows, scroll down to the Microsoft Windows Users section. Both these programs use the underlying SSH Secure SHell protocol that encrypts both your password and the data being transferred. Open a terminal window on your local machine. Do not log in to the remote machine; the terminal commands given below must execute locally.

In the local terminal window, use SCP to copy a file from the remote machine to a file on the local machine, as follows. The first file name below is the file name on the remote machine; the second file name is the name it will be copied to or use a name of dot. If the remote machine is behind a firewall and requires a special port to be used, the -P option upper case P must be used to set the firewall pass-through port: Use the actual port number for your firewall.

If the remote name is a dot. As with insecure FTP, you can list the contents of remote directories and transfer files both ways using put and get on the same connection. Some versions of SFTP use -P to set the port number; others have an awkward way to specify the port number:. Avoid the standard insecure FTP program — it sends passwords in clear text across the Internet. You are slightly safer using the FTP program locally here at school, but realize that anyone snooping packets on your local network will still see your password.

FTP is an insecure form of file transfer; because, any password you type into insecure FTP is visible across the network. If you log in to the Course Linux Server using secure SSH , you can then use the insecure ftp or lftp commands on the Server to connect out from the Server to other remote machines e. If you set up your home computer with an insecure FTP server [be careful! Once you have an insecure FTP connection set up, you can copy files in either direction using the put and get commands, as you wish.

Many Internet sites support a form of anonymous insecure FTP that lets you connect to a site without requring a password, using the special insecure FTP userid anonymous or ftp. Since it requires no password, this form of insecure FTP is safe to use over the Internet. Command-line insecure FTP is a subsystem kind of program with its own set of subcommands. Inside insecure FTP, the help command will list the possible insecure FTP commands available, and help commandname will give you a bit more help on the given FTP command name.

Do not confuse Unix commands with insecure FTP subcommands. Pay attention to which program is prompting you for input. To quit FTP, type quit. The command-line insecure FTP program is also available under Windows. The list of insecure FTP commands is slightly different; but, the basic commands ls, cd, get, put are the same as for Unix.

FTP is not secure. Insecure FTP will not transfer entire directories; it may only be used to transfer files one at a time. See the help for the mget insecure FTP subcommand. Insecure FTP can transfer files in either text or binary mode. Almost always use binary mode, which makes an exact copy of the file. Text mode can be used to translate line ends when copying plain text files between dissimilar systems, e.

The syntax of insecure FTP commands is not the same as the syntax of Unix commands. If you answer yes to this prompt, you will copy the output of ls -l into the file filename in your current directory, erasing what was there before. This is probably not what you want. The syntax is different. You are not typing into a shell, you are typing into the insecure FTP program. This client is already installed on the Windows computers in the Algonquin T labs.

Accept the remote SSH host key when prompted to do so. Upon successful connection, the left side of the window becomes the Local site: Highly recommended for sysadmin: Under the Transfer menu, turn on Preserve timestamps of transferred files.

You can now drag items from Local to Remote or vice-versa. You can right-click on items for other options. It has two GUI interface modes: Use the drag-and-drop Explorer interface if you are not familiar with the two-pane format of Norton Commander. Use the Commander interface if you want to move files quickly using drag-and-drop or mouse-free keyboard shortcuts. Remember to fetch the edited remote file after you edit it!

For use in scripts, see the PuTTY suite of programs. See below for examples of how to do this. For example, you might find yourself typing something like this:. You must surround the pathnames with double quotes if the pathnames contain blanks. If the remote machine is behind a firewall and requires a gateway and special port to be used, the -P option upper case P must be used to set the firewall pass-through port. Leave it out otherwise. The backslash at the end of a line below indicates that the line continues.

Type what is written all on one line without the backslash. You must use your own userid on the remote machine. The -P option sets a non-standard port number, if you need it. If the remote machine is behind a firewall and requires a special port to be used, the -P option upper case P must be used to set the firewall pass-through port. You must replace example.

In particular, the option -P has different meanings! You must replace abcd with your own userid. You will be asked for your password on the Course Linux Server. If you are asked to accept the server encryption key, say yes. Files put into your home directory will not be visible on the Web. You can also download various graphical insecure FTP clients. The Windows Explorer not Internet Explorer! Underneath, Windows is using the insecure FTP protocol and your data and passwords are visible to anyone who can snoop your network connection.

Your password and data are not encrypted when you use insecure FTP. Do not use this method on an untrusted network i. You may be able to access a file via FTP that cannot be displayed in a web browser, since the FTP program is logged in as your account name and the web browser accesses your files as other. You must ensure that your files have read permissions for other after you transfer them to the Course Linux Server. Windows Explorer, using insecure FTP, may create directories and files with the wrong Linux permissions.

Inaccessible files and directories will generate Permission Denied errors in your web browser. Files and directories with unwanted write permissions will allow other users to delete or erase your web pages. If the file you want to take home from Unix is a text file not an image , you can usually EMail it to yourself somewhere using a command-line Unix EMail program with standard input redirected to come from the file you want.

Unix mail programs that work this way are mutt , Mail , mailx , and mail. You can only send text files this way, and you can only send one file per mail message using file input redirection unless you concatenate many files together first.

See man mail for further details. To send binary programs via email you must encode them as ASCII first and decode them after receiving them.