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其他
7z
split - Linux命令大全 - 笔下光年
网站首页
split
分割任意大小的文件 ## 补充说明 **split命令** 可以将一个大文件分割成很多个小文件,有时需要将文件分割成更小的片段,比如为提高可读性,生成日志等。 ### 选项 ```shell -b:值为每一输出档案的大小,单位为 byte。 -C:每一输出档中,单行的最大 byte 数。 -d:使用数字作为后缀。 -l:值为每一输出档的行数大小。 -a:指定后缀长度(默认为2)。 ``` ### 实例 生成一个大小为100KB的测试文件: ```shell [root@localhost split]# dd if=/dev/zero bs=100k count=1 of=date.file 1+0 records in 1+0 records out 102400 bytes (102 kB) copied, 0.00043 seconds, 238 MB/s ``` 使用split命令将上面创建的date.file文件分割成大小为10KB的小文件: ```shell [root@localhost split]# split -b 10k date.file [root@localhost split]# ls date.file xaa xab xac xad xae xaf xag xah xai xaj ``` 文件被分割成多个带有字母的后缀文件,如果想用数字后缀可使用-d参数,同时可以使用-a length来指定后缀的长度: ```shell [root@localhost split]# split -b 10k date.file -d -a 3 [root@localhost split]# ls date.file x000 x001 x002 x003 x004 x005 x006 x007 x008 x009 ``` 为分割后的文件指定文件名的前缀: ```shell [root@localhost split]# split -b 10k date.file -d -a 3 split_file [root@localhost split]# ls date.file split_file000 split_file001 split_file002 split_file003 split_file004 split_file005 split_file006 split_file007 split_file008 split_file009 ``` 使用-l选项根据文件的行数来分割文件,例如把文件分割成每个包含10行的小文件: ```shell split -l 10 date.file ```
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