Question

我有一个看起来像这样的文件列表

  4 -rw-r--r-- 1 neversaint hgc0746         53 May  1 10:37 SRX016372-SRR037477.est_count
  4 -rw-r--r-- 1 neversaint hgc0746         53 May  1 10:34 SRX016372-SRR037478.est_count
  4 -rw-r--r-- 1 neversaint hgc0746         53 May  1 10:41 SRX016372-SRR037479.est_count
  0 -rw-r--r-- 1 neversaint hgc0746          0 Apr 27 11:16 SRX003838-SRR015096.est_count
  0 -rw-r--r-- 1 neversaint hgc0746          0 Apr 27 11:32 SRX004765-SRR016565.est_count

我想要做的是找到大小为53的文件。但为什么这个命令失败了？

$ find . -name "*.est_count" -size 53 -print

虽然我只想用这个命令找到大小为0的文件，但效果很好：

 $ find . -name "*.est_count" -size 0 -print

Answer 1

您需要在'c'后面加上53的后缀。根据find的手册页 -

-size n[cwbkMG]
          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)

          `c'    for bytes

          `w'    for two-byte words

          `k'    for Kilobytes (units of 1024 bytes)

          `M'    for Megabytes (units of 1048576 bytes)

          `G'    for Gigabytes (units of 1073741824 bytes)

          The  size  does  not  count  indirect  blocks, but it does count
          blocks in sparse files that are not actually allocated.  Bear in
          mind  that the `%k' and `%b' format specifiers of -printf handle
          sparse  files  differently.   The  `b'  suffix  always   denotes
          512-byte  blocks and never 1 Kilobyte blocks, which is different
          to the behaviour of -ls.

Answer 2

 -size n[ckMGTP]
         True if the file's size, rounded up, in 512-byte blocks is n.  If
         n is followed by a c, then the primary is true if the file's size
         is n bytes (characters).  Similarly if n is followed by a scale
         indicator then the file's size is compared to n scaled as:

         k       kilobytes (1024 bytes)
         M       megabytes (1024 kilobytes)
         G       gigabytes (1024 megabytes)
         T       terabytes (1024 gigabytes)
         P       petabytes (1024 terabytes)

您需要使用-size 53c。

Answer 3

这是我在Mac OS 10.5上获得的

> man find
...
-size n[c]
         True if the file's size, rounded up, in 512-byte blocks is n.  If n
         is followed by a c, then the primary is true if the file's size is n
         bytes (characters).

在Unix / Linux中查找具有固定文件大小（> 0）的文件

3 个答案: