各位帮我检查一下什么问题

Yuri

1. 
   
2. #!/bin/bash
   
3. cp file1 file2 &
   
4. SSZIE=284712239
   
5. bf=0
   
6. while [[ $bf -lt 101 ]];do
   
7.         if [[ $bf -lt 100 ]];then
   
8.                 jd="$bf%%"
   
9.         else
   
10.                 jd="done"
    
11.         fi
    
12.         printf "\rtesting...       $jd"
    
13.         if [ -f test ];then
    
14.                 TSIZE=`ls -l file2 |awk '{print $5}'`
    
15.                 bf=`perl -e "print $TSIZE/$SSIZE*100"|awk -F"." '{print $1}'`
    
16.         fi
    
17. done
    
18. printf "\n"
    

复制代码

ssize的量是定的.就免了去ls-l了
执行结果如此
testing...       0%Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
testing...       %Illegal division by zero at -e line 1.
不知哪里邮问题

Yuri

谢谢各位了.帮帮忙

luke_guo

是不是这个地方：jd="$bf%%"多了个%，我是瞎猜，呵呵。

troll

复制文件的进度条？

问题出在那个Perl命令上，0不可为除数，Perl不能直接访问Shell变量？

kevinliu

Line 3 SSIZE not SSZIE


#!/bin/bash
cp file1 file2 &
SSIZE=523625
bf=0
while [[ $bf -lt 100 ]];do
        if [[ $bf -lt 100 ]];then
                jd="$bf%%"
        else
                jd="done"
        fi
        printf "\rtesting...       $jd"
        if [ -f file2 ];then
                TSIZE=`ls -l file2 |awk '{print $5}'`
                bf=`perl -e "print $TSIZE/$SSIZE*100"|awk -F"." '{print $1}'`
        fi
done
printf "\n"

biinn

Post by kevinliu
Line 3 SSIZE not SSZIE

Can't believe that Yuri made this kind of mistake, haha.

Yuri

Post by biinn
Can't believe that Yuri made this kind of mistake, haha.

不许说洋文,我看不懂

Yuri

Post by troll
复制文件的进度条？

问题出在那个Perl命令上，0不可为除数，Perl不能直接访问Shell变量？

正是,0可以作为除数,per也l可以访问shell变量的吧.我这里试了一下可以啊.

1. 
   
2. #!/bin/bash
   
3. SSIZE=284712759
   
4. TSIZE=`ls -l /root/test |awk '{print $5}'`
   
5. bf=`perl -e "print 0/$SSIZE*100"|awk -F"." '{print $1}'`
   
6. echo $bf
   

复制代码

执行这个是可以的.

Yuri

Post by luke_guo
是不是这个地方：jd="$bf%%"多了个%，我是瞎猜，呵呵。

printf的%当\使的.(看MAN看的,E文不好,不太确定,但实践了一下)

biinn

Post by kevinliu
Line 3 SSIZE not SSZIE

学习不认真，仔细看kevin的回复：你的第三行有个笔误。