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  • shell 练习

    shell 练习

    iii=0
    while [ $iii -lt 100 ] 
            do
                    iii=$[$iii+1]
                    echo -n "$iii "
            done
    
    iii=0
    until ! [ $iii -lt 100 ]
            do
                    iii=$[$iii+1]
    
                    echo -n "$iii "
            done
    
    echo while until num is done 
    
    while true
    do
            echo 'plase input your operate !'
            read BBB
    
            if [ "$BBB" = "out" ]
                    then break
            fi
    done
    
    
    
    
    
    
    
    
    
    
    echo while until is done 
    
    
    
    for i in root mjorce jorcen normal 
    do 
            echo i is $i 
    done
    
    echo i si $i ;
    
    for f in 123 4123 /etc/profile.d/*.sh 
    do 
            echo f is $f
    done
    
    
    
    
    for i in `seq 1 3` 
    do 
            echo -n "$i " && sleep 1 
    done 
    
    
    
    
    PIDS="`pgrep httpd`"
    [ -z "$PIDS" ] && echo 'httpd is not running !' && echo exi
    
    for i in $PIDS 
            do
                    kill -9 $i
            done
    
    echo httpd is killed 
    
    
    Myfun (){
     echo patams1 is $1 
     echo -n "now i is $i "
     ! [ "$i" ] && exit ;
     echo jj 
     return '1'
    
    }
    
    
    myf=$(Myfun);
    echo myf 
    Myfun 12
    
    
    unset  Myfun
    
    
    Myfun
    
    echo 'the end !'$myf
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  • 原文地址:https://www.cnblogs.com/mjorcen/p/3791539.html
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