csplit
TLDR
Split a file starting second part at line 10
$ csplit [path/to/file] 10
Split a file into three parts at lines 7 and 23$ csplit [path/to/file] 7 23
Start a new part at every 5th line$ csplit [path/to/file] 5 {*}
Split every 5th line, ignoring division errors$ csplit -k [path/to/file] 5 {*}
Use a custom prefix for output files$ csplit [path/to/file] 5 -f [prefix]
Split above first line matching a regex$ csplit [path/to/file] /[regex]/
SYNOPSIS
csplit [options] file pattern...
DESCRIPTION
csplit splits a file into pieces based on context (line numbers or patterns). It generates files named xx00, xx01, etc. by default.
Unlike split which divides by size, csplit divides by content structure, making it useful for splitting log files, configuration files, or documents at specific boundaries.
PARAMETERS
-f, --prefix prefix
Use specified prefix instead of 'xx'-k, --keep-files
Don't remove output files on error-n, --digits digits
Number of digits in output filename-s, --quiet
Don't print byte counts{n}
Repeat previous pattern n times**{*}**
Repeat previous pattern as many times as possible
CAVEATS
Part of GNU coreutils. Without -k, output files are deleted if an error occurs. Pattern repetition with {*} will fail if the pattern doesn't divide the file evenly (use -k to keep partial output).
