rs man page on 4.4BSD

Man page or keyword search:  
man Server   1065 pages
apropos Keyword Search (all sections)
Output format
4.4BSD logo
[printable version]

RS(1)									 RS(1)

       rs - reshape a data array

       rs [ -[csCS][x][kKgGw][N]tTeEnyjhHm ] [ rows [ cols ] ]

       Rs  reads the standard input, interpreting each line as a row of blank-
       separated entries in an array, transforms the array  according  to  the
       options,	 and  writes  it on the standard output.  With no arguments it
       transforms stream input into a columnar format convenient for  terminal

       The  shape  of  the input array is deduced from the number of lines and
       the number of columns on the first line.	 If  that  shape  is  inconve‐
       nient,  a  more	useful	one  might be obtained by skipping some of the
       input with the -k option.  Other options control interpretation of  the
       input columns.

       The shape of the output array is influenced by the rows and cols speci‐
       fications, which should be positive integers.  If only one of them is a
       positive integer, rs computes a value for the other which will accommo‐
       date all of the data.  When necessary, missing data are supplied	 in  a
       manner  specified  by  the options and surplus data are deleted.	 There
       are options to control presentation of the  output  columns,  including
       transposition of the rows and columns.

       The options are described below.

       -cx    Input  columns are delimited by the single character x.  A miss‐
	      ing x is taken to be `^I'.

       -sx    Like -c, but maximal strings of x are delimiters.

       -Cx    Output columns are delimited by the single character x.  A miss‐
	      ing x is taken to be `^I'.

       -Sx    Like -C, but padded strings of x are delimiters.

       -t     Fill  in	the  rows of the output array using the columns of the
	      input array, that is, transpose the  input  while	 honoring  any
	      rows and cols specifications.

       -T     Print the pure transpose of the input, ignoring any rows or cols

       -kN    Ignore the first N lines of input.

       -KN    Like -k, but print the ignored lines.

       -gN    The gutter width (inter-column space), normally 2, is  taken  to
	      be N.

       -GN    The gutter width has N percent of the maximum column width added
	      to it.

       -e     Consider each line of input as an array entry.

       -n     On lines having fewer entries than  the  first  line,  use  null
	      entries  to  pad	out  the  line.	 Normally, missing entries are
	      taken from the next line of input.

       -y     If there are too few entries to make up the  output  dimensions,
	      pad  the output by recycling the input from the beginning.  Nor‐
	      mally, the output is padded with blanks.

       -h     Print the shape of the input array and  do  nothing  else.   The
	      shape  is	 just the number of lines and the number of entries on
	      the first line.

       -H     Like -h, but also print the length of each line.

       -j     Right adjust entries within columns.

       -wN    The width of the display, normally 80, is taken to be the	 posi‐
	      tive integer N.

       -m     Do not trim excess delimiters from the ends of the output array.

       With no arguments, rs transposes its input, and assumes one array entry
       per input line unless the first non-ignored line	 is  longer  than  the
       display width.  Option letters which take numerical arguments interpret
       a missing number as zero unless otherwise indicated.

       Rs can be used as a filter to convert the stream output of certain pro‐
       grams  (e.g.,  spell, du, file, look, nm, who, and wc(1)) into a conve‐
       nient ``window'' format, as in

	      who   |	rs

       This function has been incorporated into the ls(1) program, though  for
       most programs with similar output rs suffices.

       To convert stream input into vector output and back again, use

	      rs   1   0   |   rs   0	1

       A  10 by 10 array of random numbers from 1 to 100 and its transpose can
       be generated with

	      jot   -r	 100   |   rs	10   10	  |    tee    array    |    rs
	      -T   >   tarray

       In  the	editor	vi(1), a file consisting of a multi-line vector with 9
       elements per line can undergo insertions and  deletions,	 and  then  be
       neatly reshaped into 9 columns with

	      :1,$!rs	0   9

       Finally, to sort a database by the first line of each 4-line field, try

	      rs   -eC	 0   4	 |   sort   |	rs   -c	  0   1

       jot(1), vi(1), sort(1), pr(1)

       Handles only two dimensional arrays.

       The algorithm currently reads the whole file into memory, so files that
       do not fit in memory will not be reshaped.

       Fields cannot be defined yet on character positions.

       Re-ordering of columns is not yet possible.

       There are too many options.

4th Berkeley Distribution      December 30, 1993			 RS(1)

List of man pages available for 4.4BSD

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
Vote for polarhome
Free Shell Accounts :: the biggest list on the net