Run multiple commands on a remote host with sudo

ssh -t user@host 'sudo bash -c "ls /var/log && cat /etc/passwd"'

0
By: jaybill
2012-12-13 21:55:55

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  • Oneliner to run commands on multiple servers over ssh. - First parameter "$1" is the command you want to execute remotely. ( It can be multiple commands e.g. "hostname;uptime") - Second parameter "${@:2}" represents the remote host/s you want to run the command/s on. Show Sample Output


    2
    sxh () { for i in "${@:2}"; do ssh "$i" "$1"; done ; }
    zlemini · 2013-04-12 11:34:02 3
  • It's useful mostly for your custom scripts, which running on specific host and tired on ssh'ing every time when you need one simple command (i use it for update remote apt repository, when new package have to be downloaded from another host). Don't forget to set up authorization by keys, for maximum comfort. Show Sample Output


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    echo -e '#!/bin/bash\nssh remote-user@remote-host $0 "$@"' >> /usr/local/bin/ssh-rpc; chmod +x /usr/local/bin/ssh-rpc; ln -s hostname /usr/local/bin/ssh-rpc; hostname
    mechmind · 2011-12-28 17:43:34 5
  • This improves on #9892 by compressing the directory on the remote machine so that the amount of data transferred over the network is much smaller. The command uses ssh(1) to get to a remote host, uses tar(1) to archive and compress a remote directory, prints the result to STDOUT, which is written to a local file. In other words, we are archiving and compressing a remote directory to our local box.


    20
    ssh user@host "tar -zcf - /path/to/dir" > dir.tar.gz
    __ · 2011-12-16 05:48:38 2
  • The command uses ssh(1) to get to a remote host, uses tar(1) to archive a remote directory, prints the result to STDOUT, which is piped to gzip(1) to compress to a local file. In other words, we are archiving and compressing a remote directory to our local box.


    7
    ssh user@host "tar -cf - /path/to/dir" | gzip > dir.tar.gz
    atoponce · 2011-12-14 15:54:57 7

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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