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.\" $OpenBSD: lam.1,v 1.10 2018/07/29 11:27:14 schwarze Exp $
.\" $NetBSD: lam.1,v 1.4 2002/02/08 01:36:25 ross Exp $
.\"
.\" Copyright (c) 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)lam.1 8.1 (Berkeley) 6/6/93
.\"
.Dd $Mdocdate: July 29 2018 $
.Dt LAM 1
.Os
.Sh NAME
.Nm lam
.Nd laminate files
.Sh SYNOPSIS
.Nm
.Op Fl f Ar min.max
.Op Fl p Ar min.max
.Op Fl s Ar sepstring
.Op Fl t Ar c
.Ar
.Sh DESCRIPTION
.Nm
copies the named files side by side onto the standard output.
The
.Em n Ns -th
input lines from the input
.Ar files
are considered fragments of the single long
.Em n Ns -th
output line into which they are assembled.
The name
.Dq \&-
means the standard input, and may be repeated.
.Pp
Normally, each option affects only the
.Ar file
after it.
If the option letter is capitalized it affects all subsequent files
until it appears again uncapitalized.
The options are described below.
.Bl -tag -width "-s sepstring"
.It Fl f Ar min.max
Print line fragments according to the format string
.Ar min.max ,
where
.Ar min
is the minimum field width and
.Ar max
the maximum field width.
If
.Ar min
begins with a zero, zeros will be prepended to make up the field width
instead of blanks, and if it begins with a
.Sq \&- ,
the fragment will be left-adjusted
within the field.
.It Fl p Ar min.max
Like
.Fl f ,
but pad this file's field when end-of-file is reached
and other files are still active.
.It Fl s Ar sepstring
Print
.Ar sepstring
before printing line fragments from the next file.
This option may appear after the last file.
.It Fl t Ar c
The input line terminator is
.Ar c
instead of a newline.
The newline normally appended to each output line is omitted.
.El
.Pp
To print files simultaneously for easy viewing use
.Xr pr 1 .
.Sh ENVIRONMENT
.Bl -tag -width LC_CTYPE
.It Ev LC_CTYPE
The character encoding
.Xr locale 1 .
It determines the display widths of characters used by the
.Fl f
and
.Fl p
options.
If unset or set to
.Qq C ,
.Qq POSIX ,
or an unsupported value, each byte is regarded as a character
of display width 1.
.El
.Sh EXAMPLES
Join four files together along each line:
.Pp
.Dl $ lam file1 file2 file3 file4
.Pp
Merge the lines from four different files:
.Bd -literal -offset indent
$ lam file1 \-S "\e
" file2 file3 file4
.Ed
.Pp
Join every two lines of a file:
.Pp
.Dl $ lam \- \- \*(Lt file
.Pp
A form letter with substitutions keyed by
.Sq \&@
can be done with:
.Pp
.Dl $ lam \-t @ letter changes
.Sh SEE ALSO
.Xr join 1 ,
.Xr pr 1 ,
.Xr printf 1
.Sh HISTORY
The
.Nm
utility first appeared in
.Bx 4.2 .
.Sh AUTHORS
.An John A. Kunze
|
