多机器执行ssh脚本

#!/bin/bashUsage(){    echo "Usage: $0 'machine1 [machine2...]' 'command'"}OUTPUT_LOG="/tmp/output-$$.log"ERROR_LOG="/tmp/error-$$.log"MACHINES="$1";COMMAND="$2";echo "machines: $MACHINES"echo "command: $COMMAND"for strMachine in `echo $MACHINES`do    echo "run command for $strMachine";    #echo "ssh '$strMachine' '$COMMAND' >> $OUTPUT_LOG.'$strMachine' 2>> $ERROR_LOG.'$strMachine' &"    ssh "$strMachine" "$COMMAND" >> $OUTPUT_LOG."$strMachine" 2>> $ERROR_LOG."$strMachine" &donewait;cat $OUTPUT_LOG.*cat $ERROR_LOG.*\rm -f $OUTPUT_LOG.*\rm -f $ERROR_LOG.*