How to create unattended FTP sessions.
The customer would like to be able to do an ftp transfer without any
user interaction (i.e., kick it off from cron). Following are the
steps that are required for such a task.
1) Create a .netrc file in your home directory, or the directory from
which you will be initiating the file transfer from. This is the
The file format of this file is:
machine \ user \ password \ macdef
machine hercules login john password doe macdef
machine aristotle login jane password doe
When executed this file will automatically login the user john
using the password doe to the system hercules. "init" is the name
of a special macro that is executed immediately upon login
to the system. The command "lcd /tmp/test" causes the local
directory to be changed to /tmp/test (this is where incoming files
will be stored). The command "mget u*" retrieves all files in the
remote directory that start with the letter "u". The command "bye"
terminates the ftp session. It is essential that the last command
be followed by a blank line for the macro to execute correctly.
2) Change the ownership on the .netrc file to R/W for owner only.
(i.e., chmod 600 .netrc)
3) You may now start ftp in the following way:
ftp -i hercules
The "-i" flag turns interactive mode off. The user is not required
to input anything in the process. ftp checks the current directory, then
the local users $HOME directory for a .netrc file. When it finds
the file it will process the line in the file corresponding to the
system name specified in the ftp command. This command could then be
placed into a crontab and run at a later time.
Support Line: How to create unattended FTP sessions. ITEM: Q6036L
Dated: January 1995 Category: N/A
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