定制板卡中bash无法使用，使用标准sh完成对系统及业务监控

#! /bin/sh     #Process_Name="/guard /aps /sa /zyguard"  Process_Name="/mp /mcu"  #获取主机IP地址  ip=`ifconfig eth0 |grep "inet addr"| cut -f 2 -d ":"|cut -f 1 -d " "`  gstr="/guard"  space=" "  First_Process=""     #获取初始业务进程号  for i in $Process_Name  do      if [[ $i == $gstr ]]      then          Bf_Process=`ps |grep $i|grep -v grep|grep -v '/bin/bash'|awk '{print $1}'`          First_Process=$First_Process$i":"$Bf_Process$space      else          Bf_Process=`ps |grep $i|grep -v grep|awk '{print $1}'`          First_Process=$First_Process$i":"$Bf_Process$space      fi  done     while true  do      For_num=1      sleep 3      Second_Process=""      #第二次获取业务进程号      for i in $Process_Name      do          if [[ $i == $gstr ]]          then              Bs_Process=`ps |grep $i|grep -v grep|grep -v '/bin/bash'|awk '{print $1}'`              Second_Process=$Second_Process$i":"$Bs_Process$space          else              Bs_Process=`ps |grep $i|grep -v grep|awk '{print $1}'`              Second_Process=$Second_Process$i":"$Bs_Process$space          fi      done      echo "First_Process:"$First_Process      echo "Second_Process:"$Second_Process      #查看所有业务进程有无变化，有变化输出到日志文件      for j in $Process_Name      do          echo $j          One_f_Process=`echo $First_Process|awk -v t="${For_num}" '{print $t}'`          One_s_Process=`echo $Second_Process|awk -v t="${For_num}" '{print $t}'`          For_num=$((For_num+1))          echo "One_f_Process:"$One_f_Process          echo "One_s_Process:"$One_s_Process          if [[ "$One_f_Process" != "$One_s_Process" ]]          then              Time_Now=`date`              echo $Time_Now              echo $j              echo $One_s_Process              echo $One_f_Process              echo -e $Time_Now"\t"$j"\tCollapse\tThe new process："$One_s_Process"\t\tThe old process："$One_f_Process >> /usr/tmp/$ip'_collapse'.txt          fi      done      #获取业务进程号      First_Process=""      for i in $Process_Name      do          if [[ $i == $gstr ]]          then              Bf_Process=`ps |grep $i|grep -v grep|grep -v '/bin/bash'|awk '{print $1}'`              First_Process=$First_Process$i":"$Bf_Process$space          else              Bf_Process=`ps |grep $i|grep -v grep|awk '{print $1}'`              First_Process=$First_Process$i":"$Bf_Process$space          fi      done             #系统内存使用率监控      Memory_Use_Rate=`free | grep Mem | awk '{printf"%d",$3/$2*100}'`      if [ 80 -le $Memory_Use_Rate ]      then          Time_Now=`date`          echo -e $Time_Now"\tSystm Memory\tMemory_Use_Rate\tAt present the use value:"$Memory_Use_Rate"%\tThreshold:80%" >> /usr/tmp/$ip'_alarm'.txt      fi             #系统CPU剩余率监控      Cpu_Residual_Rate=`mpstat|grep all|awk '{printf"%d",$11}'`      echo $Cpu_Residual_Rate      if [ $Cpu_Residual_Rate -le 20 ]      then          Time_Now=`date`          echo $Time_Now          echo -e $Time_Now"\tSystm Cpu\tCpu_Residual_Rate(%idle)\tAt present the use value:"$Cpu_Residual_Rate"%\tThreshold:20%" >> /usr/tmp/$ip'_alarm'.txt      fi              #业务内存使用率监控      System_Memory=`free | grep Mem | awk '{printf"%d",$2/1024}'`      for k in $Process_Name      do          if [[ $k == $gstr ]]          then              Process_Memory_Use=`ps |grep $k|grep -v grep|grep -v '/bin/bash'|awk '{print $3}'`              var_length=${#Process_Memory_Use}              var_Position=`expr $var_length - 1`              m=${Process_Memory_Use:$var_Position:1}              if [[ $m == "m" ]]              then                  Pro_Mem_Use=${Process_Memory_Use:0:$var_Position}                 else                  Pro_Mem_Use=`expr $Process_Memory_Use / 1024`              fi              System_Memory_Threshold=`free | grep Mem | awk '{printf"%d",$2/1024*0.8}'`              if [[ $Pro_Mem_Use  -ge $System_Memory_Threshold ]]              then                  Time_Now=`date`                  echo -e $Time_Now"\t"$k"\tProcess_Memory_Use\tAt present the use value:"$Pro_Mem_Use"Mb\tThreshold:"$System_Memory_Threshold"Mb" >> /usr/tmp/$ip'_alarm'.txt              fi          else              Process_Memory_Use=`ps |grep $k|grep -v grep|awk '{print $3}'`              var_length=${#Process_Memory_Use}              var_Position=`expr $var_length - 1`              m=${Process_Memory_Use:$var_Position:1}              if [[ $m == "m" ]]              then                  Pro_Mem_Use=${Process_Memory_Use:0:$var_Position}                 else                  Pro_Mem_Use=`expr $Process_Memory_Use / 1024`              fi              System_Memory_Threshold=`free | grep Mem | awk '{printf"%d",$2/1024*0.8}'`              if [[ $Pro_Mem_Use  -ge $System_Memory_Threshold ]]              then                  Time_Now=`date`                  echo -e $Time_Now"\t"$k"\tProcess_Memory_Use\tAt present the use value:"$Pro_Mem_Use"Mb\tThreshold:"$System_Memory_Threshold"Mb" >> /usr/tmp/$ip'_alarm'.txt              fi          fi      done  done