串联多个脚本执行的脚本

#!/bin/bash
cmds=(
step1.sh
step2.sh
step3.sh
step4.sh
)
for cmd in ${cmds[@]} 
do
  a=`echo ${cmd}" start!"`
  sh ${cmd} 
  if [ $? -ne 0 ]; then
    echo  ${cmd}" failed!"
    exit
  else
    echo ${cmd}" succeed!"
  fi
done