1.\" Copyright (c) 1980, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)colrm.1 8.1 (Berkeley) 6/6/93 29.\" 30.Dd June 23, 2020 31.Dt COLRM 1 32.Os 33.Sh NAME 34.Nm colrm 35.Nd remove columns from a file 36.Sh SYNOPSIS 37.Nm 38.Op Ar start Op Ar stop 39.Sh DESCRIPTION 40The 41.Nm 42utility removes selected columns from the lines of a file. 43A column is defined as a single character in a line. 44Input is read from the standard input. 45Output is written to the standard output. 46.Pp 47If only the 48.Ar start 49column is specified, columns numbered less than the 50.Ar start 51column will be written. 52If both 53.Ar start 54and 55.Ar stop 56columns are specified, columns numbered less than the 57.Ar start 58column 59or greater than the 60.Ar stop 61column will be written. 62Column numbering starts with one, not zero. 63.Pp 64Tab characters increment the column count to the next multiple of eight. 65Backspace characters decrement the column count by one. 66.Sh ENVIRONMENT 67The 68.Ev LANG , LC_ALL 69and 70.Ev LC_CTYPE 71environment variables affect the execution of 72.Nm 73as described in 74.Xr environ 7 . 75.Sh EXIT STATUS 76.Ex -std 77.Sh EXAMPLES 78Show columns below 3 (c) and above 5 (e): 79.Bd -literal -offset indent 80$ echo -e "abcdefgh\en12345678" | colrm 3 5 81abfgh 8212678 83.Ed 84.Pp 85Specifying a start column bigger than the number of columns in the file is 86allowed and shows all the columns: 87.Bd -literal -offset indent 88$ echo "abcdefgh" | colrm 100 89abcdefgh 90.Ed 91.Pp 92Using 1 as start column will show nothing: 93.Bd -literal -offset indent 94$ echo "abcdefgh" | colrm 1 95 96.Ed 97.Sh SEE ALSO 98.Xr awk 1 , 99.Xr column 1 , 100.Xr cut 1 , 101.Xr paste 1 102.Sh HISTORY 103The 104.Nm 105utility first appeared in 106.Bx 1 . 107.Sh AUTHORS 108.An Jeff Schriebman 109wrote the original version of 110.Nm 111in November 1974. 112