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Top Forums Shell Programming and Scripting Script template for inputting filenames and print results Post 302499571 by Chubler_XL on Thursday 24th of February 2011 05:43:55 PM
Old 02-24-2011
Some of the double quotes might need escaping in the ssh command above.

Here is a version with a simple menu which you might find usefull examples of:
  • Select statement with validation and additional quit option
  • $(( )) calculations
  • Fetch number of elements in an array using ${#array[@]}
  • If then else clause

Code:
#!/bin/bash
(( $# < 1 )) && {
    printf "usage: %s <file_name>\n" "${0##*/}"
    exit 1
}
 
_server_list=( server1 server2 )
 
_fn=$1
_cmd=/usr/bin/md5sum
 
select s in "${_server_list[@]}" "quit"; do
    if [[ -z "$s" ]]
    then
        echo "Option $REPLY is invalid - Please select a number from 1 to $(( ${#_server_list[@]} + 1))"
    else
        [[ "$s" = "quit" ]] && break
        ssh "$s" "
            [ -f \"$_fn\" ] && 
                $_cmd $_fn ||
                printf \"error executing %s %s on %s\n\" \\
\"$_cmd\" \"$_fn\" \"$s\""
    fi
done


Last edited by Chubler_XL; 02-24-2011 at 06:56 PM.. Reason: Cleanup formatting
 

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bup-on(1)						      General Commands Manual							 bup-on(1)

NAME
bup-on - run a bup server locally and client remotely SYNOPSIS
bup on <hostname> index ... bup on <hostname> save ... bup on <hostname> split ... DESCRIPTION
bup on runs the given bup command on the given host using ssh. It runs a bup server on the local machine, so that commands like bup save on the remote machine can back up to the local machine. (You don't need to provide a --remote option to bup save in order for this to work.) See bup-index(1), bup-save(1), and so on for details of how each subcommand works. This 'reverse mode' operation is useful when the machine being backed up isn't supposed to be able to ssh into the backup server. For example, your backup server can be hidden behind a one-way firewall on a private or dynamic IP address; using an ssh key, it can be autho- rized to ssh into each of your important machines. After connecting to each destination machine, it initiates a backup, receiving the resulting data and storing in its local repository. For example, if you run several virtual private Linux machines on a remote hosting provider, you could back them up to a local (much less expensive) computer in your basement. EXAMPLES
# First index the files on the remote server $ bup on myserver index -vux /etc bup server: reading from stdin. Indexing: 2465, done. bup: merging indexes (186668/186668), done. bup server: done # Now save the files from the remote server to the # local $BUP_DIR $ bup on myserver save -n myserver-backup /etc bup server: reading from stdin. bup server: command: 'list-indexes' PackIdxList: using 7 indexes. Saving: 100.00% (241/241k, 648/648 files), done. bup server: received 55 objects. Indexing objects: 100% (55/55), done. bup server: command: 'quit' bup server: done # Now we can look at the resulting repo on the local # machine $ bup ftp 'cat /myserver-backup/latest/etc/passwd' root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/bin/sh bin:x:2:2:bin:/bin:/bin/sh sys:x:3:3:sys:/dev:/bin/sh sync:x:4:65534:sync:/bin:/bin/sync ... SEE ALSO
bup-index(1), bup-save(1), bup-split(1) BUP
Part of the bup(1) suite. AUTHORS
Avery Pennarun <apenwarr@gmail.com>. Bup unknown- bup-on(1)
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