帮忙看下这个报错，谢谢

wwjfeng2013

请帮助，非常感谢~
我的目的是想将文件中每行特定的内容，循环赋予一个变量，最后输出那个变量。

#!/bin/ksh
error_num=0
error_text=`echo abc`
while read line
do
   t1=`echo ${line} | awk '{print $3}'`
   t2=`echo ${line} | awk '{print $4"~"$5}'`
   ((error_num=error_num + t1))
   error_text = "${error_text},${t2}"
done < /arch_bak/backup/2.txt
echo $error_num
echo $error_text

报错如下:sh -x test.sh
+ error_num=0
+ + echo abc
error_text=abc
+ 0< /arch_bak/backup/2.txt
+ read line
+ + echo archivelog lost! 1 416634 416636
+ awk {print $3}
t1=1
+ + echo archivelog lost! 1 416634 416636
+ awk {print $4"~"$5}
t2=416634~416636
+ (( error_num=error_num + t1 ))
+ error_text = abc,416634~416636
test.sh[9]: error_text:  not found.
+ read line
+ + echo archivelog lost! 2 416641 416644
+ awk {print $3}
t1=2
+ + echo archivelog lost! 2 416641 416644
+ awk {print $4"~"$5}
t2=416641~416644
+ (( error_num=error_num + t1 ))
+ error_text = abc,416641~416644
test.sh[9]: error_text:  not found.
+ read line
+ echo 3
3
+ echo abc
abc