ref: 6cd07cf340af12356ca4558cb8fad5ed3ebc41d1
dir: /sys/man/1/split/
.TH SPLIT 1 .CT 1 files .SH NAME split \- split a file into pieces .SH SYNOPSIS .B split [ .I option ... ] [ .I file ] .SH DESCRIPTION .I Split reads .I file (standard input by default) and writes it in pieces of 1000 lines per output file. The names of the output files are .BR xaa , .BR xab , and so on to .BR xzz . The options are .TP .BI -n " n" Split into .IR n -line pieces. .TP .BI -l " n" Synonym for .B -n .IR n , a nod to Unix's syntax. .TP .BI -e " expression" File divisions occur at each line that matches a regular .IR expression ; see .IR regexp (6). Multiple .B -e options may appear. If a subexpression of .I expression is contained in parentheses .BR ( ... ) , the output file name is the portion of the line which matches the subexpression. .TP .BI -f " stem Use .I stem instead of .B x in output file names. .TP .BI -s " suffix Append .I suffix to names identified under .BR -e . .TP .B -x Exclude the matched input line from the output file. .TP .B -i Ignore case in option .BR -e ; force output file names (excluding the suffix) to lower case. .SH SOURCE .B /sys/src/cmd/split.c .SH SEE ALSO .IR sed (1), .IR awk (1), .IR grep (1), .IR regexp (6)