find

1、在/root目录下找到大于8126464字节的文件，然后移动到/opt/hhh目录下

# find /root -type f -size +8126464c | xargs -t -i mv {} /root/hhh/

xargs:

-i 表示 find 传递给xargs的结果 由{}来代替

-t 会打印出对应的文件

find:

      -type c 选项解释：

             File is of type c:

             b      block (buffered) special  块（缓冲）设备

             c      character (unbuffered) special 字符设备

             d      directory  目录

             p      named pipe (FIFO)  有名管道

             f      regular file   正规的文件

             l      symbolic  link;  this is never true if the -L option or the -follow option is in effect, unless the symbolic link is broken.  If you want         to search for symbolic links when -L is in effect, use -xtype.  符号链接

             s      socket  

             D      door (Solaris)

      -size n[cwbkMG]选项解释：

             File uses n units of space.  The following suffixes can be used:

             ‘b’    for 512-byte blocks (this is the default if no suffix is used) 以块为单位

             ‘c’    for bytes    以字节单位

             ‘w’    for two-byte words   以单词为单位，即2哥字节

             ‘k’    for Kilobytes (units of 1024 bytes) 以1K为单位，即1024k

             ‘M’    for Megabytes (units of 1048576 bytes)  以M为单位

             ‘G’    for Gigabytes (units of 1073741824 bytes) 以G为单位

+8126464c的解释：

+ 表示大于8126464bytes,- 表示小于8126464bytes

2、针对文件的访问、修改等时间查找

      -amin n

             File was last accessed n minutes ago.

# find /root -amin -10   #查找/root目录下最后10分钟访问的文件和目录

      -atime n

             File was last accessed n*24 hours ago.  When find figures out how many 24-hour periods ago the file was last accessed, any  fractional  part  is

             ignored, so to match -atime +1, a file has to have been accessed at least two days ago.

# find /root -atime -2  #查找/root目录下最后48小时访问的目录和文件

      -mmin n

             File’s data was last modified n minutes ago.

# find /root -mmin -5   #查找/root目录下最后5分钟修改的文件

      -mtime n

             File’s data was last modified n*24 hours ago.  See the comments for -atime to understand how rounding affects the interpretation of file modifi-

             cation times.

# find /root -mtime -2  #查找/root目录下最后48小时修改的文件