执行脚本，且以脚本名保存log

 1 !/bin/bash
 2 path="/sys/devices/platform/soc/fd880000.i2c-pld/i2c-0/i2c-4/i2c-15/15-0060"
 3 
 4 f_log=$0 #定义变量f_log,并且将脚本名$0赋值给f_log

 5 for ((j=37;j<=66;j++)) #循环ports 37-66

 6 do  
 7     echo "#cat $path/port$i_module_reset" | tee -a 2>&1 ${f_log:3:19}.log #${f_log:3:19}取脚本名，去掉后缀.sh。3:19表示切片

 8 
 9    cat $path/i2c-$j/$j-0050/$i | tee -a 2>&1 ${f_log:3:19}.log

10    sleep 1 

11 done