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1.\" Copyright (c) 1991, 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. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)intro.1 8.2 (Berkeley) 12/30/93 33.\" $FreeBSD$ 34.\" 35.Dd October 21, 2001 36.Dt INTRO 1 37.Os 38.Sh NAME 39.Nm intro 40.Nd introduction to general commands (tools and utilities) 41.Sh DESCRIPTION 42Section one of the manual contains most of the commands 43which comprise the 44.Bx 45user environment. 46Some of the commands included in section one are 47text editors, command shell interpreters, 48searching and sorting tools, 49file manipulation commands, 50system status commands, 51remote file copy commands, mail commands, 52compilers and compiler tools, 53formatted output tools, 54and line printer commands. 55.Pp 56All commands set a status value upon exit which may be tested 57to see if the command completed normally. 58Traditionally, the value 0 signifies successful 59completion of the command, while a value >0 indicates an error. 60Some commands attempt to describe the nature of the failure by using 61exit codes as defined in 62.Xr sysexits 3 , 63while others simply set the status to an arbitrary value >0 (typically 1). 64.Sh SEE ALSO 65.Xr apropos 1 , 66.Xr man 1 , 67.Xr intro 2 , 68.Xr intro 3 , 69.Xr sysexits 3 , 70.Xr intro 4 , 71.Xr intro 5 , 72.Xr intro 6 , 73.Xr intro 7 , 74.Xr security 7 , 75.Xr intro 8 , 76.Xr intro 9 77.Pp 78Tutorials in the 79.%T "UNIX User's Manual Supplementary Documents" . 80.Sh HISTORY 81The 82.Nm 83manual page appeared in 84.At v6 .