在Ubuntu下安装海思sdk时，直接运行安装脚本，会有如下提示：
./sdk.unpack
./sdk.unpack: 2: ./sdk.unpack: source: not found
./sdk.unpack: 4: ./sdk.unpack: ECHO: not found
./sdk.unpack: 6: ./sdk.unpack: WARN: not found
./sdk.unpack: 7: ./sdk.unpack: WARN: not found
./sdk.unpack: 8: ./sdk.unpack: ECHO: not found
./sdk.unpack: 20: ./sdk.unpack: ECHO: not found
./sdk.unpack: 22: ./sdk.unpack: run_command_progress_float: not found
./sdk.unpack: 24: ./sdk.unpack: ECHO: not found
./sdk.unpack: 26: ./sdk.unpack: run_command_progress_float: not found
./sdk.unpack: 37: ./sdk.unpack: ECHO: not found
mkdir: 已创建目录 'mpp'
./sdk.unpack: 39: ./sdk.unpack: run_command_progress_float: not found
./sdk.unpack: 42: ./sdk.unpack: ECHO: not found
mkdir: 已创建目录 'drv'
./sdk.unpack: 44: ./sdk.unpack: run_command_progress_float: not found
这个问题只需要修改一下sdk.unpack.sh脚本：
把第一行的#!/bin/sh修改为#!/bin/bash即可。
再次运行：
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