csplit — split a file into sections determined by context lines
csplit [OPTION...] FILE PATTERN...
Output pieces of FILE separated by PATTERN(s) to files `xx00', `xx01', ..., and output byte counts of each piece to standard output.
Mandatory arguments to long options are mandatory for short options too.
−b, −−suffix−format=FORMATuse sprintf FORMAT instead of %02d
−f, −−prefix=PREFIXuse PREFIX instead of `xx'
−k, −−keep−filesdo not remove output files on errors
−n, −−digits=DIGITSuse specified number of digits instead of 2
−s, −−quiet, −−silentdo not print counts of output file sizes
−z, −−elide−empty−filesremove empty output files
−−helpdisplay this help and exit
−−versionoutput version information and exit
Read standard input if FILE is −. Each PATTERN may be:
INTEGERcopy up to but not including specified line number
/REGEXP/[OFFSET]copy up to but not including a matching line
skip to, but not including a matching line
repeat the previous pattern specified number of times
repeat the previous pattern as many times as possible
A line OFFSET is a required `+' or `−' followed by a positive integer.