Re: Re: Transferring files between computers using php

Rahul wrote: > Thank you all so much for replying... I guess I was very vague in > describing the situation. I will write in detail: > > I have three computers A, B and C. To login to B and C I should use A > because it has a SSH key. I don't have any other way of accessing these > two computers. Now, if I need to transfer a file between B and C, I am > unable to find a way that would work... because I don't know how to > authenticate without SSH keys... I was gathering some data in B and C > using PHP. Now, I need these two computers to coordinate a little and > didn't want to use a server in between and so I was thinking of > establishing a direct connection between them.. > > > Zareef Ahmed wrote: >> On 3/7/08, Shawn McKenzie <nospam@mckenzies.net> wrote: >>> Rahul wrote: >>>> I have a small file to be transferred between two computers every few >>>> seconds. I'm using unix with a bare bones version of php, i.e. just the >>>> original thing that gets installed when I run "yum install php". As >>> there is >>>> no webserver on any of these machines, I was wondering if there is a >>>> way >>> to >>>> transfer a small file between them and if there is, could someone be >>> kind >>>> enough to provide me with an example please? >>>> >>>> Thank You >>>> >>>> >>> FYI... If you're using yum I assume it's a Linux machine (maybe Fedora) >>> and not Unix. >> >> >> >> If you want to use rsync and scp in a cronjob (for continuous transfer >> at a >> predefined interval), you may need to set your server (read ssh) to >> accept >> connection without password. >> Ref : http://linuxproblem.org/art_9.html >> >> BUT If you really want to do that from PHP, you can install a web >> server and >> enable http as your stream for opening files. (In php.ini) >> You can read the file using fopen or any other file functions, then can >> write that file to the server on which script will be running, then >> you can >> set this script as your cron job. >> >> For example : >> >> >> $filecontents=file_get_contents("http://firstserver/file.txt"); >> >> $fp=fopen("path to local file", "mode"); >> >> Now use $fiiecontents to write the file using $fp resource. >> >> BUT remember, using rsync is always a better solution, and >> file_get_contents >> and file functions are resource hungry, specially they will consume more >> memory of your system. >> >> >> >> -- >>> PHP General Mailing List (http://www.php.net/) >>> To unsubscribe, visit: http://www.php.net/unsub.php >>> >>> >> If ssh keys are installed on the remote hosts then scp works transparently and you just stick the scp in a cron job. Am I missing something? -Shawn