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Closed 8 years ago.
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I have some big data on a computer A.
Is it possible to run a program on another computer B using this data (using ssh or something?).
Of course it is possible. There are endless possibilities for working with data on a remote computer. Assuming that NFS and Samba are not available a few ways you can use ssh:
fish scp sshfs or sftp.
e.g.
scp user#host:/wrong/places/* /proc/self/fd/1 | grep love
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Closed 2 years ago.
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I am ssh logged into a system. It is a remote system I am not in control of, but it has a directory with data I can work with. How do I download datasets from that linux system to my home computer?
Use SCP to securely transfer files between two Unix computers.
scp command usage :
scp [options] username1#source_host:directory1/filename1 username2#destination_host:directory2/filename2
Example:
To copy a file called rebels.txt from your home directory on empire.gov to a directory called revenge in your account on the computer deathstar.com, enter:
scp ~/rebels.txt dvader#deathstar.com:~/revenge
A detailed example can be found here:link
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Closed 2 years ago.
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I want to parse a line from large files on a FTP server without downloading them, using Linux command line.
Something like this comes to mind:
wget <ftp_file> | grep <something_from_a_line>
Is there a way to do this?
Reading a remote file from a client machine implies that you download it (explicitly or implicitly). Otherwise you must find some way to connect onto the server and read the file locally on the server.
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Closed 3 years ago.
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I'm in a team taking part in the Astro Pi competition. Our experiment uses AI to process satellite images - but that isn't relevant to the question.
I need a method for a Raspberry Pi to fetch a file from another Pi - rather like the scp command (secure copy) but that fetches a file as opposed to sending one. Is there a command for this?
Thanks!
The same scp can do that.
Just use the following syntax:
$ scp username#from_the_other_Pi:/remote/directory/file /local/directory/file
And you're done!
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Closed 4 years ago.
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I need put a script file and a line in crontab in 1200 Linux servers.
How could I do this task automatically ?
Many many options!
write a script that connects via SSH to each of those servers, and have it create your script file & modify crontab!
use Ansible!
use SaltStack!
use < some other configuration management framework >!
Seriously though, are you suggesting you are in charge of 1200 servers and the usual procedure of doing, well, anything is by hand? Flabbergasting!
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Closed 8 years ago.
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I'm working on a network with many Linux machines.
In one of them I have a file that I suspect was pushed by another machine.
The machines can access each other using ssh connections.
Is there anyway I can tell which machine pushed the file?
I tried looking for ssh logs but the /var/log/secure/ directory doesn't exist.
Depending on the distro and your logging settings, you may have some luck with /log/auth.
Try grep sshd /var/log/auth.log
Depends on your distro, you can check following files from your distro.
/var/log/secure
/var/log/auth.log
/var/log/syslog
/var/log/daemon.log