mirror of git://git.suckless.org/sbase
74 lines
1.5 KiB
Groff
74 lines
1.5 KiB
Groff
.Dd 2015-10-08
|
|
.Dt CUT 1
|
|
.Os sbase
|
|
.Sh NAME
|
|
.Nm cut
|
|
.Nd extract columns of data
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Fl b Ar list
|
|
.Op Fl n
|
|
.Op Ar file ...
|
|
.Nm
|
|
.Fl c Ar list
|
|
.Op Ar file ...
|
|
.Nm
|
|
.Fl f Ar list
|
|
.Op Fl d Ar delim
|
|
.Op Fl s
|
|
.Op Ar file ...
|
|
.Sh DESCRIPTION
|
|
.Nm
|
|
out bytes, characters or delimited fields from each line of
|
|
.Ar file
|
|
and write to stdout.
|
|
.Pp
|
|
If no
|
|
.Ar file
|
|
is given or
|
|
.Ar file
|
|
is '-',
|
|
.Nm
|
|
reads from stdin.
|
|
.Pp
|
|
.Ar list
|
|
is a comma or space separated list of numbers and ranges starting
|
|
from 1.
|
|
Ranges have the form 'N-M'. If N or M is missing, beginning or end
|
|
of line is assumed.
|
|
Numbers and ranges may be repeated, overlapping and in any order.
|
|
.Pp
|
|
Selected input is written in the same order it is read
|
|
and is written exactly once.
|
|
.Sh OPTIONS
|
|
.Bl -tag -width Ds
|
|
.It Fl b Ar list | Fl c Ar list
|
|
.Ar list
|
|
specifies byte | character positions.
|
|
.It Fl d Ar delim
|
|
Use
|
|
.Ar delim
|
|
as field delimiter, which can be an arbitrary string.
|
|
Default is '\et'.
|
|
.It Fl f Ar list
|
|
.Ar list
|
|
specifies field numbers.
|
|
Lines not containing field delimiters are passed through, unless
|
|
.Fl s
|
|
is specified.
|
|
.It Fl n
|
|
Do not split multibyte characters.
|
|
A character is written when its last byte is selected.
|
|
.It Fl s
|
|
Suppress lines not containing field delimiters.
|
|
.El
|
|
.Sh STANDARDS
|
|
The
|
|
.Nm
|
|
utility is compliant with the
|
|
.St -p1003.1-2013
|
|
specification.
|
|
.Pp
|
|
The possibility of separating numbers and ranges with a space and specifying
|
|
multibyte delimiters of arbitrary length is an extension to that specification.
|