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. 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.\" @(#)intro.1 8.2 (Berkeley) 12/30/93 29.\" $FreeBSD$ 30.\" 31.Dd October 21, 2001 32.Dt INTRO 1 33.Os 34.Sh NAME 35.Nm intro 36.Nd introduction to general commands (tools and utilities) 37.Sh DESCRIPTION 38Section one of the manual contains most of the commands 39which comprise the 40.Bx 41user environment. 42Some of the commands included in section one are 43text editors, command shell interpreters, 44searching and sorting tools, 45file manipulation commands, 46system status commands, 47remote file copy commands, mail commands, 48compilers and compiler tools, 49formatted output tools, 50and line printer commands. 51.Pp 52All commands set a status value upon exit which may be tested 53to see if the command completed normally. 54Traditionally, the value 0 signifies successful 55completion of the command, while a value >0 indicates an error. 56Some commands attempt to describe the nature of the failure by using 57exit codes as defined in 58.Xr sysexits 3 , 59while others simply set the status to an arbitrary value >0 (typically 1). 60.Sh SEE ALSO 61.Xr apropos 1 , 62.Xr man 1 , 63.Xr intro 2 , 64.Xr intro 3 , 65.Xr sysexits 3 , 66.Xr intro 4 , 67.Xr intro 5 , 68.Xr intro 6 , 69.Xr intro 7 , 70.Xr security 7 , 71.Xr intro 8 , 72.Xr intro 9 73.Pp 74Tutorials in the 75.%T "UNIX User's Manual Supplementary Documents" . 76.Sh HISTORY 77The 78.Nm 79manual page appeared in 80.At v6 . 81