shell - 如何使用数字后缀分割文件

Question

我正在使用以下命令来分割文件。它应该每 50,000 行分割一次并使用 4 位数字后缀。该文件大约有 1.4 亿行。

split -d -l -n 4 50000 domains.xml domains_

但是当我运行时，我收到此错误:

split: -n: invalid number of lines
Try `split --help' for more information.

正确的命令是什么？

Answer 1

因为 GNU split 的主要帮助说:

Usage: /usr/gnu/bin/split [OPTION]... [INPUT [PREFIX]]
Output fixed-size pieces of INPUT to PREFIXaa, PREFIXab, ...; default
size is 1000 lines, and default PREFIX is 'x'.  With no INPUT, or when INPUT
is -, read standard input.

Mandatory arguments to long options are mandatory for short options too.
  -a, --suffix-length=N   generate suffixes of length N (default 2)
      --additional-suffix=SUFFIX  append an additional SUFFIX to file names.
  -b, --bytes=SIZE        put SIZE bytes per output file
  -C, --line-bytes=SIZE   put at most SIZE bytes of lines per output file
  -d, --numeric-suffixes[=FROM]  use numeric suffixes instead of alphabetic.
                                   FROM changes the start value (default 0).
  -e, --elide-empty-files  do not generate empty output files with '-n'
      --filter=COMMAND    write to shell COMMAND; file name is $FILE
  -l, --lines=NUMBER      put NUMBER lines per output file
  -n, --number=CHUNKS     generate CHUNKS output files.  See below
  -u, --unbuffered        immediately copy input to output with '-n r/...'
      --verbose           print a diagnostic just before each
                            output file is opened
      --help     display this help and exit
      --version  output version information and exit

在我看来，您需要稍微重新组织一下您的选择:

split -a 4 -d -l 50000 domains.xml domains_