linux基础学习2

约定不等于承诺〃 2022-09-26 02:57 84阅读 0赞

在慕课网学习linux所做的笔记, 习惯把笔记写在word，这是之前写好的没粘贴出来，这是笔记文档的链接 **[http://pan.baidu.com/s/1pLyEcVx][http_pan.baidu.com_s_1pLyEcVx] 密码：pssb**

**四、           链接命令**

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软链接要写绝对路径

**五、       文件搜索命令**

**5.1文件搜索命令locate**

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locate搜索文件从数据库搜索，更新频率一天一更，updatedb可以强制更行

\# /etc/updatedb.conf配置文件

PRUNE_BIND_MOUNTS = "yes"
    PRUNEFS = "9p afs anon_inodefs auto autofs bdev binfmt_misc cgroup cifs coda configfs cpuset debugfs devpts ecryptfs exofs fuse fuse.sshfs fusectl gfs gfs2 hugetlbfs inotifyfs iso9660 jffs2 lustre mqueue ncpfs nfs nfs4 nfsd pipefs proc ramfs rootfs rpc_pipefs securityfs selinuxfs sfs sockfs sysfs tmpfs ubifs udf usbfs"
    #locate命令 不搜索这些后缀的文件名
    RUNENAMES = ".git .hg .svn"
    #不搜索这些目录下的文件
    PRUNEPATHS = "/afs /media /mnt /net /sfs /tmp /udev /var/cache/ccache /var/lib/yum/yumdb /var/spool/cups /var/spool/squid /var/tmp"

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whereis与which也遵从这个规则

**5.2命令搜索命令whereis与which**

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cd 命令不能用whereis和which找到，shell自带

**which   文件名**    \#搜索命令所在路径及别名

**5.3文件搜索命令find                   遍历文件**

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linux中的通配符有：\*任意字符        ?任意一个字符       \[\]匹配任意一个中括号内的字符

**find  \[目录\]  –iname  \[文件\]**  //不区分大小写搜索

**         find  /root   –user   root         //按照所有者搜索**

**         find  /root   –nouser         **         //查找没有所有者的文件

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**5.4字符串搜索命令grep**

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**5.5find命令与grep命令的区别**

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补充：环境变量的查看，  echo  $PATH

[http_pan.baidu.com_s_1pLyEcVx]: http://pan.baidu.com/s/1pLyEcVx
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