今天面试的几道SHELL编程题

wb1896

请问你应聘这家公司的待遇是多少？

fwloveme

if [ -n "$1" -a -d "$1" ];then
        ls -a $1|grep '^\.[^.]'
以上语句的"-n",还有ls -a $1|grep '^\.[^.]'是什么意思啊?

牧神午后

mark

snowbow

mark too

hbl.ncut

mark too too  

evil_knight

垃圾公司，在中国还用英文考试，讨厌这种小公司！只认文凭不认能力！这嫌疑太大了，呵呵!
估计他召不到人，呵呵！

shhgs

1. 
   
2. (cd $1; ls -ad .*)
   

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1. 
   
2. counter=0
   
3. for f in *.txt; do
   
4.        [ ! -s $f ] && (( counter = counter +1 )) && rm -f $f
   
5. done
   
6. echo $counter
   

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[ 本帖最后由 shhgs 于 2007-6-20 05:18 编辑 ]

junzero

看不懂，哈哈！

quakerbird

mark

over12

1

1. #!/bin/bash
   
2. #listallfile
   
3. if [ $# -gt 1 ]
   
4. then
   
5.   echo "Too many arguments! usage:`basename $0`: dir"
   
6.   exit 1
   
7. fi
   
8. 
   
9. if [ -z $1 ]
   
10. then
    
11.   echo "Usage:`basename $0`: dir"
    
12.   exit 1
    
13. fi
    
14. 
    
15. if [ ! -d $1 ]
    
16. then
    
17.   echo "The $1 is not a directory!"
    
18. else
    
19. ls -al $1
    
20. fi
    

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2

1. 
   
2. #!/bin/bash
   
3. #lsempty
   
4. 
   
5. for filename in `ls | grep "txt"`
   
6. do
   
7.   if [ ! -s $filename ]
   
8.   then
   
9.     rm -f $filename
   
10.     let "a=a+1"
    
11.   fi
    
12. done
    
13. echo "The $a numbers of empty files had removed"
    

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3

1. 
   
2. #!/bin/bash
   
3. #omit7
   
4. for((i=1;i<=1000;i++))
   
5. do
   
6.   a=`expr $i \% 7`
   
7.   if [ $a -ne "0" ]
   
8.   then
   
9.    if [ `echo "$i" | grep -v "7"` ]
   
10.    then
    
11.      echo $i
    
12.    fi
    
13.   fi
    
14. done
    

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