• linux基础学习-4.5-Linux三剑客与find命令实战


    子:/oldboy目录下文件中内容oldboy替换为oldgirl

    1、创建环境

    mkdir -p /oldboy/test

    cd /oldboy

    echo "oldboy">test/del.sh

    echo "oldboy">test.sh

    echo "oldboy">t.sh

    touch oldboy.txt

    touch alex.txt

    2、找出文件

    [root@oldboyedu36 oldboy]# #找到你要处理的东西

    [root@oldboyedu36 oldboy]# find /oldboy/ -type f

    /oldboy/alex.txt

    /oldboy/test.sh

    /oldboy/test/del.sh

    /oldboy/oldboy.txt

    /oldboy/t.sh

    [root@oldboyedu36 oldboy]# find /oldboy/ -type f -name "*.sh"

    /oldboy/test.sh

    /oldboy/test/del.sh

    /oldboy/t.sh

    3、把一个文件中的oldboy替换为oldgirl

    sed 's#找谁#替换成啥#g'

    [root@oldboyedu36 oldboy]# sed 's#oldboy#oldgirl#g' /oldboy/test.sh

    oldgirl

    [root@oldboyedu36 oldboy]# cat /oldboy/test.sh

    oldboy

    [root@oldboyedu36 oldboy]# sed -i 's#oldboy#oldgirl#g' /oldboy/test.sh

    [root@oldboyedu36 oldboy]# cat /oldboy/test.sh

    oldgirl

    4、用find命令找到文件,然后用sed修改文件内容

    [root@oldboyedu36 oldboy]# find /oldboy/ -type f -name "*.sh"

    /oldboy/test.sh

    /oldboy/test/del.sh

    /oldboy/t.sh

    [root@oldboyedu36 oldboy]# ##先看看结果对不对

    [root@oldboyedu36 oldboy]# sed 's#oldboy#oldgirl#g' /oldboy/test.sh^C

    [root@oldboyedu36 oldboy]# sed 's#oldboy#oldgirl#g' /oldboy/test.sh^C

    [root@oldboyedu36 oldboy]# find /oldboy/ -type f -name "*.sh"|xargs sed 's#oldboy#oldgirl#g' /oldboy/test.sh

    oldgirl

    oldgirl

    oldgirl

    oldgirl

    [root@oldboyedu36 oldboy]# ##结果对了 -i

    [root@oldboyedu36 oldboy]# find /oldboy/ -type f -name "*.sh"|xargs sed -i 's#oldboy#oldgirl#g' /oldboy/test.sh

    [root@oldboyedu36 oldboy]# cat /oldboy/test.sh

    oldgirl

    [root@oldboyedu36 oldboy]# cat /oldboy/test/del.sh

    oldgirl

    5、其它方法

    方法二

    [root@oldboyedu36 ~]# ###

    [root@oldboyedu36 ~]# which mkdir

    /bin/mkdir

    [root@oldboyedu36 ~]# ls -l /bin/mkdir

    -rwxr-xr-x. 1 root root 50056 Mar 23 02:52 /bin/mkdir

    [root@oldboyedu36 ~]#

    [root@oldboyedu36 ~]# ###把上面两条命令合起来

    [root@oldboyedu36 ~]# ###ls -l 此处放置的是which mkdir命令的结果

    [root@oldboyedu36 ~]# ls -l which mkdir

    ls: cannot access which: No such file or directory

    ls: cannot access mkdir: No such file or directory

    [root@oldboyedu36 ~]# ls -l $(which mkdir)

    -rwxr-xr-x. 1 root root 50056 Mar 23 02:52 /bin/mkdir

    [root@oldboyedu36 ~]# ##$() 表示 先执行里面的"命令",然后把命令结果留下来

    [root@oldboyedu36 ~]# ##$() ===== ``

    $() <==> `` 在一个命令中包含另一个命令

    [root@oldboyedu36 ~]# #sed 's#oldboy#oldgirl#g' 文件名字 文件 文件 文件

    [root@oldboyedu36 ~]# #sed 's#oldboy#oldgirl#g' 这些文件怎么得到的?

    [root@oldboyedu36 ~]# #sed 's#oldboy#oldgirl#g' find命令的结果

    [root@oldboyedu36 ~]# #sed 's#oldboy#oldgirl#g' $(find /oldboy/ -type f -name "*.sh")

    [root@oldboyedu36 ~]# sed 's#oldboy#oldgirl#g' $(find /oldboy/ -type f -name "*.sh")

    oldgirl

    oldgirl

    oldgirl

    方法三

    [root@oldboyedu36 ~]# ###

    [root@oldboyedu36 ~]# find /oldboy/ -type f -name "*.sh"

    /oldboy/test.sh

    /oldboy/test/del.sh

    /oldboy/t.sh

    [root@oldboyedu36 ~]# find /oldboy/ -type f -name "*.sh" -exec ls -l {} ;

    -rw-r--r--. 1 root root 7 May 3 06:27 /oldboy/test.sh

    -rw-r--r--. 1 root root 7 May 3 06:27 /oldboy/test/del.sh

    -rw-r--r--. 1 root root 7 May 3 06:27 /oldboy/t.sh

    [root@oldboyedu36 ~]# find /oldboy/ -type f -name "*.sh" -exec sed 's#oldboy#oldgirl#g' {} ;

    oldgirl

    oldgirl

    oldgirl

    6、修改网卡ip

    find /etc/ -type f -name "*eth0" |xargs sed 's#IPADDR=.*#IPADDR=10.0.0.200#'

    练习题:

    1、将文件中的oldboy替换成oldgirl

    2、使用find命令修改网卡ip地址

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  • 原文地址:https://www.cnblogs.com/Klanti/p/9052474.html
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