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【xcall.sh】
#!/bin/bash
params=$@
hosts=`cat /soft/hadoop/etc/hadoop/slaves`
tput setaf 2
echo =============localhost==================
tput setaf 7
$params
for host in $hosts ; do
tput setaf 2
echo =============$host===========================
tput setaf 7
ssh -4 $host source /etc/profile ; $params
done
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