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split-分割文件.md

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split command

The split command is used to split a large file into smaller files. By default, it splits the file into smaller files with 1000 lines in each file.

Syntax

split [OPTION]... [FILE [PREFIX]]

Options

  • -a, --suffix-length=N: Use suffixes of length N, by default use 2 characters.
  • --additional-suffix=SUFFIX: Append an additional SUFFIX to the file names.
  • -b, --bytes=SIZE: Put SIZE bytes per output file.
  • -C, --line-bytes=SIZE: Put at most SIZE bytes of lines into each output file, similar to -b but with consideration for maintaining line integrity.
  • -d: Use numeric suffixes instead of alphabetic.
  • --numeric-suffixes[=FROM]: Same as -d, but allows setting a start value.
  • -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; CHUNKS could be:
    • N: split into N files based on input size
    • K/N: output Kth of N to stdout
    • l/N: split into N files, no line splitting
    • l/K/N: output Kth of N to stdout, no line splitting
    • r/N: similar to l, but use a round robin distribution
    • r/K/N: output Kth of N to stdout, with round robin distribution
  • -t, --separator=SEP: Use SEP instead of newline as the record separator, \0 for NUL.
  • -u, --unbuffered: Immediately copy input to output with -n r/....
  • --verbose: Print informative message before opening each output file.
  • --help: Display help information.
  • --version: Output version information.

Examples

Split file tmp/file.txt into separate files, named newaa, newab, newac, etc., with each file containing 2 bytes of data.

split -b 2 /tmp/file.txt new

Split file tmp/file.txt into separate files, named newaa, newab, newac, etc., with each file containing 2 lines of data.

 split -l 2 /tmp/file.txt new

Split file tmp/file.txt into separate files, using numeric suffixes, with each file containing 2 lines of data.

split -d -l 2 /tmp/file.txt new

Daily Quiz

https://github.com/WindrunnerMax/EveryDay

References

https://www.computerhope.com/unix/usplit.htm
https://www.runoob.com/linux/linux-comm-split.html
https://www.tutorialspoint.com/unix_commands/split.htm