Batch execution of the same command shell script on a Linux cluster __linux

Execute the same command on multiple machines on a cluster because of actual development needs. For example, execute a specified script, delete files in the same directory (this is prudent ~ ~) and so on, the members of the group developed a ALLSCP (can execute the SCP command to synchronize the online code) very good, I also wrote a, The main is to use SSH to log on to a server, and then execute a specified command.

First paste the shell code:

#!/bin/bash
If ["$#"-ne 2]; then
    echo "USAGE: $0-f server_list_file cmd"
    exit-1
fi

file_name=$1< C5/>cmd_str=$2

cwd=$ (PWD)
CD $cwd
serverlist_file= "$CWD/$file _name"

if [!-e $serverlist _file]; Then
    Echo ' server.list not exist ';
    Exit 0
Fi while read line do
    #echo $line
    If [-N "$line"]; then
        echo "Doing--->>>  ;>> "$line" <<<<<<< "
        ssh $line $cmd _str </dev/null >/dev/null
        if [$-eq 0] ; Then
            echo "$cmd _str done!"
        else
            echo "error:" $?
        Fi
    fi done
< $serverlist _file

The code is simple and does not explain.

How to use:

1. Create a new file host_file_list, file for the server's address, each row;

2. Save the above shell script, such as Save as allcmd.sh, pay attention to using chmod +x allcmd.sh make it executable script;

3. Run allcmd.sh host_file_list MD, Host_file_list is the 1th step of the file name (remember and allcmd.sh placed in the same directory), CMD is to execute the command, wrapped in single quotes, such as: Delete/home /nuaazdh/a tmp.txt file below: allcmd.sh host_file_list ' Rm/home/nuaazdh/tmp.txt '

4. Done.