linux命令：chown,改变文件所有者和组

chown命令用于改变文件的所有者和组。它有一些选项可以实现特定的功能，比如－R选项可以递归的改变指定目录及该目录下所有的文件。

操作方法

  • 01

    先看一下该命令的帮助信息： [c.lpm@CentOS7 ~]$ chown --helpUsage: chown [OPTION]... [OWNER][:[GROUP]] FILE...  or:  chown [OPTION]... --reference=RFILE FILE...Change the owner and/or group of each FILE to OWNER and/or GROUP.With --reference, change the owner and group of each FILE to those of RFILE.  -c, --changes          like verbose but report only when a change is made  -f, --silent, --quiet  suppress most error messages  -v, --verbose          output a diagnostic for every file processed      --dereference      affect the referent of each symbolic link (this is                         the default), rather than the symbolic link itself  -h, --no-dereference   affect symbolic links instead of any referenced file                         (useful only on systems that can change the                         ownership of a symlink)      --from=CURRENT_OWNER:CURRENT_GROUP                         change the owner and/or group of each file only if                         its current owner and/or group match those specified                         here.  Either may be omitted, in which case a match                         is not required for the omitted attribute      --no-preserve-root  do not treat '/' specially (the default)      --preserve-root    fail to operate recursively on '/'      --reference=RFILE  use RFILE's owner and group rather than                         specifying OWNER:GROUP values  -R, --recursive        operate on files and directories recursivelyThe following options modify how a hierarchy is traversed when the -Roption is also specified.  If more than one is specified, only the finalone takes effect.  -H                     if a command line argument is a symbolic link                         to a directory, traverse it  -L                     traverse every symbolic link to a directory                         encountered  -P                     do not traverse any symbolic links (default)      --help     display this help and exit      --version  output version information and exitOwner is unchanged if missing.  Group is unchanged if missing, but changedto login group if implied by a ':' following a symbolic OWNER.OWNER and GROUP may be numeric as well as symbolic.Examples:  chown root /u        Change the owner of /u to "root".  chown root:staff /u  Likewise, but also change its group to "staff".  chown -hR root /u    Change the owner of /u and subfiles to "root".GNU coreutils online help: <http://www.gnu.org/software/coreutils/>For complete documentation, run: info coreutils 'chown invocation'

  • 02

    这是基本的用法，如果要改变文件的所有者和组，用“：”隔开就可以了。下面看下示例：

  • 03

    [c.lpm@CentOS7 ~]$ ls -l |grep djangodrwx------. 3 c.lpm c.lpm 4096 Oct 14 19:35 django 目录django属于c.lpm,现在把所有者改为root,组保持不变： [root@CentOS7 c.lpm]# chown -v root djangochanged ownership of ‘django’ from c.lpm to root [root@CentOS7 c.lpm]# ls -l |grep djangodrwx------. 3 root  c.lpm 4096 Oct 14 19:35 django

  • 04

    现在同时把所有者和组均改为root: [root@CentOS7 c.lpm]# chown -v root:root djangochanged ownership of ‘django’ from root:c.lpm to root:root 提示信息说明更改成功了，现在改回来： [root@CentOS7 c.lpm]# chown -v c.lpm:c.lpm django;ls -l |grep djangochanged ownership of ‘django’ from root:root to c.lpm:c.lpmdrwx------. 3 c.lpm c.lpm 4096 Oct 14 19:35 django

  • 05

    chown命令使用起来相对简单，没有复杂的参数。

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