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.\" RCSid "$Id: rlam.1,v 1.6 2010/06/18 01:12:57 greg Exp $"
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.TH RLAM 1 7/8/97 RADIANCE
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.SH NAME
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rlam - laminate records from multiple files
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.SH SYNOPSIS
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.B rlam
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[
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.B \-tS
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][
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.B \-u
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][
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.B \-iaN
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.B \-ifN
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.B \-idN
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.B \-iiN
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.B \-iwN
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.B \-ibN
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]
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input1 input2 ..
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.SH DESCRIPTION
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.I Rlam
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simply joins records (or lines) from multiple inputs, separating them with
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the given string (TAB by default).
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Different separators may be given for different files by specifying
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additional
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.I \-t
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options in between each file name.
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Note that there is no space between this option and its argument.
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If none of the input files uses an ASCII separator, then no end-of-line
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character will be printed, either.
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.PP
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An input is either a stream or a command.
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Commands are given in quotes, and begin with an exclamantion point ('!').
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If the inputs do not have the same number of lines, then
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shorter files will stop contributing to the output as they
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run out.
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.PP
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The
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.I \-ia
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option may be used to specify ASCII input (the default), or the
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.I \-if
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option may be used to indicated binary IEEE 32-bit floats on input.
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Similarly, the
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.I \-id
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and
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.I \-ii
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options may be used to indicate binary 64-bit doubles or integer words,
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respectively.
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The
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.I \-iw
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option specifies 2-byte short words, and the
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.I \-ib
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option specifies bytes.
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If a number is immediately follows any of these options, then it
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indicates that multiple such values are expected for each record.
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For example,
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.I \-if3
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indicates three floats per input record for the next named input.
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In the case of the
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.I \-ia
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option, no number indicates one line per input record, and numbers
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greater than zero indicate that many characters exactly per record.
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For binary input formts, no number implies one value per record.
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For anything other than EOL-separated input, the default tab separator
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is reset to the empty string.
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.PP
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A hyphen ('-') by itself can be used to indicate the standard
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input, and may appear multiple times.
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The
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.I \-u
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option forces output after each record (i.e., one run through inputs).
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.SH EXAMPLE
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To join files output1 and output2, separated by a comma:
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.IP "" .2i
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rlam \-t, output1 output2
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.PP
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To join a file with line numbers (starting at 0) and its reverse:
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.IP "" .2i
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cnt `wc \-l < lam.c` | rlam \- \-t: lam.c \-t\| '!tail \-r lam.c'
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.PP
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To join four data files, each having three doubles per record:
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.IP "" .2i
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rlam \-id3 file1.dbl file2.dbl file3.dbl file4.dbl > combined.dbl
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.SH AUTHOR
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Greg Ward
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.SH "SEE ALSO"
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cnt(1), histo(1), neaten(1), rcalc(1), tabfunc(1), total(1)
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