10564b1175
groff 1.23.0 added .MR to its -man macro package. The NEWS file states
that the inclusion of the macro "was prompted by its introduction to
Plan 9 from User Space's troff in August 2020." From d32deab it seems
that the name for Plan 9 from User Space's implementation was suggested
by groff maintainer G. Brandon Robinson.
Not sure if the intention was to make these definitions compatible, but
it would be nice if they were.
Currently, Plan 9 from User Space's .MR expects its second argument to
be parenthesized. groff's .MR does not. This results in extra
parentheses appearing in manual references when viewing Plan 9 from User
Space's manual pages on a system using groff.
83 lines
1.1 KiB
Groff
83 lines
1.1 KiB
Groff
.TH SPLIT 1
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.CT 1 files
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.SH NAME
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split \- split a file into pieces
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.SH SYNOPSIS
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.B split
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[
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.I option ...
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]
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[
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.I file
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]
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.SH DESCRIPTION
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.I Split
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reads
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.I file
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(standard input by default)
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and writes it in pieces of 1000
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lines per output file.
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The names of the
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output files are
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.BR xaa ,
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.BR xab ,
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and so on to
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.BR xzz .
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The options are
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.TP
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.BI -n " n"
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Split into
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.IR n -line
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pieces.
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.TP
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.BI -l " n"
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Synonym for
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.B -n
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.IR n ,
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a nod to Unix's syntax.
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.TP
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.BI -e " expression"
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File divisions occur at each line
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that matches a regular
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.IR expression ;
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see
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.MR regexp 7 .
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Multiple
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.B -e
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options may appear.
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If a subexpression of
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.I expression
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is contained in parentheses
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.BR ( ... ) ,
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the output file name is the portion of the
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line which matches the subexpression.
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.TP
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.BI -f " stem
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Use
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.I stem
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instead of
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.B x
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in output file names.
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.TP
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.BI -s " suffix
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Append
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.I suffix
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to names identified under
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.BR -e .
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.TP
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.B -x
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Exclude the matched input line from the output file.
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.TP
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.B -i
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Ignore case in option
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.BR -e ;
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force output file names (excluding the suffix)
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to lower case.
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.SH SOURCE
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.B \*9/src/cmd/split.c
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.SH SEE ALSO
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.IR sed (1),
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.MR awk 1 ,
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.MR grep 1 ,
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.MR regexp 7
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