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builtin.1 (100248)	builtin.1 (100574)
1.\" 2.\" Copyright (c) 1999 Sheldon Hearn 3.\" 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\"	1.\" 2.\" Copyright (c) 1999 Sheldon Hearn 3.\" 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\"
27.\" $FreeBSD: head/share/man/man1/builtin.1 100248 2002-07-17 15:34:25Z sheldonh $	27.\" $FreeBSD: head/share/man/man1/builtin.1 100574 2002-07-23 14:38:07Z tjr $
28.\" 29.Dd September 1, 1999 30.Dt BUILTIN 1 31.Os 32.Sh NAME 33.Nm builtin , 34.Nm alias , 35.Nm alloc , 36.Nm bg ,	28.\" 29.Dd September 1, 1999 30.Dt BUILTIN 1 31.Os 32.Sh NAME 33.Nm builtin , 34.Nm alias , 35.Nm alloc , 36.Nm bg ,
	37.Nm bind ,
37.Nm bindkey , 38.Nm break , 39.Nm breaksw , 40.Nm builtins , 41.Nm case , 42.Nm cd , 43.Nm chdir , 44.Nm command , 45.Nm complete , 46.Nm continue , 47.Nm default , 48.Nm dirs , 49.Nm do , 50.Nm done , 51.Nm echo , 52.Nm echotc , 53.Nm elif , 54.Nm else , 55.Nm end , 56.Nm endif , 57.Nm endsw , 58.Nm esac , 59.Nm eval , 60.Nm exec , 61.Nm exit , 62.Nm export , 63.Nm false , 64.Nm fc , 65.Nm fg , 66.Nm filetest , 67.Nm fi , 68.Nm for , 69.Nm foreach , 70.Nm getopts , 71.Nm glob , 72.Nm goto , 73.Nm hash , 74.Nm hashstat , 75.Nm history , 76.Nm hup , 77.Nm if , 78.Nm jobid , 79.Nm jobs , 80.Nm kill , 81.Nm limit , 82.Nm log , 83.Nm login , 84.Nm logout , 85.Nm ls-F , 86.Nm nice , 87.Nm nohup , 88.Nm notify , 89.Nm onintr , 90.Nm popd , 91.Nm printenv , 92.Nm pushd , 93.Nm pwd , 94.Nm read , 95.Nm readonly , 96.Nm rehash , 97.Nm repeat , 98.Nm sched , 99.Nm set , 100.Nm setenv , 101.Nm settc , 102.Nm setty , 103.Nm setvar , 104.Nm shift , 105.Nm source , 106.Nm stop , 107.Nm suspend , 108.Nm switch , 109.Nm telltc , 110.Nm test , 111.Nm then , 112.Nm time , 113.Nm trap , 114.Nm true , 115.Nm type , 116.Nm ulimit , 117.Nm umask , 118.Nm unalias , 119.Nm uncomplete , 120.Nm unhash , 121.Nm unlimit , 122.Nm unset , 123.Nm unsetenv , 124.Nm until , 125.Nm wait , 126.Nm where , 127.Nm which , 128.Nm while 129.Nd shell builtin commands 130.Sh SYNOPSIS 131.Nm 132.Op Fl options 133.Op Ar args ... 134.Sh DESCRIPTION 135Shell builtin commands are commands that can be executed within the 136running shell's process. 137Note that, in the case of 138.Xr csh 1 139builtin commands, the command is executed in a subshell if it occurs as 140any component of a pipeline except the last. 141.Pp 142If a command specified to the shell contains a slash 143.Dq \&/ , 144the shell will not execute a builtin command, even if the last component 145of the specified command matches the name of a builtin command. 146Thus, while specifying 147.Dq Ic echo 148causes a builtin command to be executed under shells that support the 149builtin echo command, 150specifying 151.Dq Pa /bin/echo 152or 153.Dq Pa ./echo 154does not. 155.Pp 156While some builtin commands may exist in more than one shell, their 157operation may be different under each shell which supports them. 158Below is a table which lists shell builtin commands, the standard shells 159that support them and whether they exist as standalone utilities. 160.Pp 161Only builtin commands for the 162.Xr csh 1 163and 164.Xr sh 1 165shells are listed here. 166Consult the appropriate manual page for 167details on the operation of any given builtin command under those shells. 168Users of other shells will need to consult the documentation supplied 169with the other shells. 170.Bl -column ".Ic uncomplete" ".Em External" ".Xr csh 1" ".Xr sh 1" -offset indent 171.It Xo 172.Em "Command External" Ta Xr csh 1 Ta Xr sh 1 173.Xc 174.It Ic alias Ta Yes Ta Yes Ta Yes 175.It Ic alloc Ta \&No Ta Yes Ta \&No 176.It Ic bg Ta Yes Ta Yes Ta Yes	38.Nm bindkey , 39.Nm break , 40.Nm breaksw , 41.Nm builtins , 42.Nm case , 43.Nm cd , 44.Nm chdir , 45.Nm command , 46.Nm complete , 47.Nm continue , 48.Nm default , 49.Nm dirs , 50.Nm do , 51.Nm done , 52.Nm echo , 53.Nm echotc , 54.Nm elif , 55.Nm else , 56.Nm end , 57.Nm endif , 58.Nm endsw , 59.Nm esac , 60.Nm eval , 61.Nm exec , 62.Nm exit , 63.Nm export , 64.Nm false , 65.Nm fc , 66.Nm fg , 67.Nm filetest , 68.Nm fi , 69.Nm for , 70.Nm foreach , 71.Nm getopts , 72.Nm glob , 73.Nm goto , 74.Nm hash , 75.Nm hashstat , 76.Nm history , 77.Nm hup , 78.Nm if , 79.Nm jobid , 80.Nm jobs , 81.Nm kill , 82.Nm limit , 83.Nm log , 84.Nm login , 85.Nm logout , 86.Nm ls-F , 87.Nm nice , 88.Nm nohup , 89.Nm notify , 90.Nm onintr , 91.Nm popd , 92.Nm printenv , 93.Nm pushd , 94.Nm pwd , 95.Nm read , 96.Nm readonly , 97.Nm rehash , 98.Nm repeat , 99.Nm sched , 100.Nm set , 101.Nm setenv , 102.Nm settc , 103.Nm setty , 104.Nm setvar , 105.Nm shift , 106.Nm source , 107.Nm stop , 108.Nm suspend , 109.Nm switch , 110.Nm telltc , 111.Nm test , 112.Nm then , 113.Nm time , 114.Nm trap , 115.Nm true , 116.Nm type , 117.Nm ulimit , 118.Nm umask , 119.Nm unalias , 120.Nm uncomplete , 121.Nm unhash , 122.Nm unlimit , 123.Nm unset , 124.Nm unsetenv , 125.Nm until , 126.Nm wait , 127.Nm where , 128.Nm which , 129.Nm while 130.Nd shell builtin commands 131.Sh SYNOPSIS 132.Nm 133.Op Fl options 134.Op Ar args ... 135.Sh DESCRIPTION 136Shell builtin commands are commands that can be executed within the 137running shell's process. 138Note that, in the case of 139.Xr csh 1 140builtin commands, the command is executed in a subshell if it occurs as 141any component of a pipeline except the last. 142.Pp 143If a command specified to the shell contains a slash 144.Dq \&/ , 145the shell will not execute a builtin command, even if the last component 146of the specified command matches the name of a builtin command. 147Thus, while specifying 148.Dq Ic echo 149causes a builtin command to be executed under shells that support the 150builtin echo command, 151specifying 152.Dq Pa /bin/echo 153or 154.Dq Pa ./echo 155does not. 156.Pp 157While some builtin commands may exist in more than one shell, their 158operation may be different under each shell which supports them. 159Below is a table which lists shell builtin commands, the standard shells 160that support them and whether they exist as standalone utilities. 161.Pp 162Only builtin commands for the 163.Xr csh 1 164and 165.Xr sh 1 166shells are listed here. 167Consult the appropriate manual page for 168details on the operation of any given builtin command under those shells. 169Users of other shells will need to consult the documentation supplied 170with the other shells. 171.Bl -column ".Ic uncomplete" ".Em External" ".Xr csh 1" ".Xr sh 1" -offset indent 172.It Xo 173.Em "Command External" Ta Xr csh 1 Ta Xr sh 1 174.Xc 175.It Ic alias Ta Yes Ta Yes Ta Yes 176.It Ic alloc Ta \&No Ta Yes Ta \&No 177.It Ic bg Ta Yes Ta Yes Ta Yes
	178.It Ic bind Ta \&No Ta \&No Ta Yes
177.It Ic bindkey Ta \&No Ta Yes Ta \&No 178.It Ic break Ta \&No Ta Yes Ta \&Yes 179.It Ic breaksw Ta \&No Ta Yes Ta \&No 180.It Ic builtins Ta \&No Ta Yes Ta \&No 181.It Ic case Ta \&No Ta Yes Ta Yes 182.It Ic cd Ta Yes Ta Yes Ta Yes 183.It Ic chdir Ta \&No Ta Yes Ta \&Yes 184.It Ic command Ta Yes Ta \&No Ta Yes 185.It Ic complete Ta \&No Ta Yes Ta \&No 186.It Ic continue Ta \&No Ta Yes Ta \&Yes 187.It Ic default Ta \&No Ta Yes Ta \&No 188.It Ic dirs Ta \&No Ta Yes Ta \&No 189.It Ic do Ta \&No Ta \&No Ta Yes 190.It Ic done Ta \&No Ta \&No Ta Yes 191.It Ic echo Ta Yes Ta Yes Ta Yes 192.It Ic echotc Ta \&No Ta Yes Ta \&No 193.It Ic elif Ta \&No Ta \&No Ta Yes 194.It Ic else Ta \&No Ta Yes Ta \&Yes 195.It Ic end Ta \&No Ta Yes Ta \&No 196.It Ic endif Ta \&No Ta Yes Ta \&No 197.It Ic endsw Ta \&No Ta Yes Ta \&No 198.It Ic esac Ta \&No Ta \&No Ta Yes 199.It Ic eval Ta \&No Ta Yes Ta Yes 200.It Ic exec Ta \&No Ta Yes Ta Yes 201.It Ic exit Ta \&No Ta Yes Ta Yes 202.It Ic export Ta \&No Ta \&No Ta Yes 203.It Ic false Ta Yes Ta \&No Ta Yes 204.It Ic fc Ta Yes Ta \&No Ta Yes 205.It Ic fg Ta Yes Ta Yes Ta Yes 206.It Ic filetest Ta \&No Ta Yes Ta \&No 207.It Ic fi Ta \&No Ta \&No Ta Yes 208.It Ic for Ta \&No Ta \&No Ta Yes 209.It Ic foreach Ta \&No Ta Yes Ta \&No 210.It Ic getopts Ta Yes Ta \&No Ta Yes 211.It Ic glob Ta \&No Ta Yes Ta \&No 212.It Ic goto Ta \&No Ta Yes Ta \&No 213.It Ic hash Ta \&No Ta \&No Ta Yes 214.It Ic hashstat Ta \&No Ta Yes Ta \&No 215.It Ic history Ta \&No Ta Yes Ta \&No 216.It Ic hup Ta \&No Ta Yes Ta \&No 217.It Ic if Ta \&No Ta Yes Ta \&Yes 218.It Ic jobid Ta \&No Ta \&No Ta Yes 219.It Ic jobs Ta Yes Ta Yes Ta Yes 220.It Ic kill Ta Yes Ta Yes Ta \&No 221.It Ic limit Ta \&No Ta Yes Ta \&No 222.It Ic log Ta \&No Ta Yes Ta \&No 223.It Ic login Ta Yes Ta Yes Ta \&No 224.It Ic logout Ta \&No Ta Yes Ta \&No 225.It Ic ls-F Ta \&No Ta Yes Ta \&No 226.It Ic nice Ta Yes Ta Yes Ta \&No 227.It Ic nohup Ta Yes Ta Yes Ta \&No 228.It Ic notify Ta \&No Ta Yes Ta \&No 229.It Ic onintr Ta \&No Ta Yes Ta \&No 230.It Ic popd Ta \&No Ta Yes Ta \&No 231.It Ic printenv Ta Yes Ta Yes Ta \&No 232.It Ic pushd Ta \&No Ta Yes Ta \&No 233.It Ic pwd Ta Yes Ta \&No Ta Yes 234.It Ic read Ta Yes Ta \&No Ta Yes 235.It Ic readonly Ta \&No Ta \&No Ta Yes 236.It Ic rehash Ta \&No Ta Yes Ta \&No 237.It Ic repeat Ta \&No Ta Yes Ta \&No 238.It Ic sched Ta \&No Ta Yes Ta \&No 239.It Ic set Ta \&No Ta Yes Ta \&Yes 240.It Ic setenv Ta \&No Ta Yes Ta \&No 241.It Ic settc Ta \&No Ta Yes Ta \&No 242.It Ic setty Ta \&No Ta Yes Ta \&No 243.It Ic setvar Ta \&No Ta \&No Ta Yes 244.It Ic shift Ta \&No Ta Yes Ta Yes 245.It Ic source Ta \&No Ta Yes Ta \&No 246.It Ic stop Ta \&No Ta Yes Ta \&No 247.It Ic suspend Ta \&No Ta Yes Ta \&No 248.It Ic switch Ta \&No Ta Yes Ta \&No 249.It Ic telltc Ta \&No Ta Yes Ta \&No 250.It Ic test Ta Yes Ta \&No Ta Yes 251.It Ic then Ta \&No Ta \&No Ta Yes 252.It Ic time Ta Yes Ta Yes Ta \&No 253.It Ic trap Ta \&No Ta \&No Ta Yes 254.It Ic true Ta Yes Ta \&No Ta Yes 255.It Ic type Ta \&No Ta \&No Ta Yes 256.It Ic ulimit Ta \&No Ta \&No Ta Yes 257.It Ic umask Ta Yes Ta Yes Ta Yes 258.It Ic unalias Ta Yes Ta Yes Ta Yes 259.It Ic uncomplete Ta \&No Ta Yes Ta \&No 260.It Ic unhash Ta \&No Ta Yes Ta \&No 261.It Ic unlimit Ta \&No Ta Yes Ta \&No 262.It Ic unset Ta \&No Ta Yes Ta Yes 263.It Ic unsetenv Ta \&No Ta Yes Ta \&No 264.It Ic until Ta \&No Ta \&No Ta Yes 265.It Ic wait Ta Yes Ta Yes Ta Yes 266.It Ic where Ta \&No Ta Yes Ta \&No 267.It Ic which Ta Yes Ta Yes Ta \&No 268.It Ic while Ta \&No Ta Yes Ta \&Yes 269.El 270.Sh SEE ALSO 271.Xr csh 1 , 272.Xr echo 1 , 273.Xr false 1 , 274.Xr kill 1 , 275.Xr login 1 , 276.Xr nice 1 , 277.Xr nohup 1 , 278.Xr printenv 1 , 279.Xr pwd 1 , 280.Xr sh 1 , 281.Xr test 1 , 282.Xr time 1 , 283.Xr true 1 , 284.Xr which 1 285.Sh HISTORY 286The 287.Nm 288manual page first appeared in 289.Fx 3.4 . 290.Sh AUTHORS 291This manual page was written by 292.An Sheldon Hearn Aq sheldonh@FreeBSD.org .	179.It Ic bindkey Ta \&No Ta Yes Ta \&No 180.It Ic break Ta \&No Ta Yes Ta \&Yes 181.It Ic breaksw Ta \&No Ta Yes Ta \&No 182.It Ic builtins Ta \&No Ta Yes Ta \&No 183.It Ic case Ta \&No Ta Yes Ta Yes 184.It Ic cd Ta Yes Ta Yes Ta Yes 185.It Ic chdir Ta \&No Ta Yes Ta \&Yes 186.It Ic command Ta Yes Ta \&No Ta Yes 187.It Ic complete Ta \&No Ta Yes Ta \&No 188.It Ic continue Ta \&No Ta Yes Ta \&Yes 189.It Ic default Ta \&No Ta Yes Ta \&No 190.It Ic dirs Ta \&No Ta Yes Ta \&No 191.It Ic do Ta \&No Ta \&No Ta Yes 192.It Ic done Ta \&No Ta \&No Ta Yes 193.It Ic echo Ta Yes Ta Yes Ta Yes 194.It Ic echotc Ta \&No Ta Yes Ta \&No 195.It Ic elif Ta \&No Ta \&No Ta Yes 196.It Ic else Ta \&No Ta Yes Ta \&Yes 197.It Ic end Ta \&No Ta Yes Ta \&No 198.It Ic endif Ta \&No Ta Yes Ta \&No 199.It Ic endsw Ta \&No Ta Yes Ta \&No 200.It Ic esac Ta \&No Ta \&No Ta Yes 201.It Ic eval Ta \&No Ta Yes Ta Yes 202.It Ic exec Ta \&No Ta Yes Ta Yes 203.It Ic exit Ta \&No Ta Yes Ta Yes 204.It Ic export Ta \&No Ta \&No Ta Yes 205.It Ic false Ta Yes Ta \&No Ta Yes 206.It Ic fc Ta Yes Ta \&No Ta Yes 207.It Ic fg Ta Yes Ta Yes Ta Yes 208.It Ic filetest Ta \&No Ta Yes Ta \&No 209.It Ic fi Ta \&No Ta \&No Ta Yes 210.It Ic for Ta \&No Ta \&No Ta Yes 211.It Ic foreach Ta \&No Ta Yes Ta \&No 212.It Ic getopts Ta Yes Ta \&No Ta Yes 213.It Ic glob Ta \&No Ta Yes Ta \&No 214.It Ic goto Ta \&No Ta Yes Ta \&No 215.It Ic hash Ta \&No Ta \&No Ta Yes 216.It Ic hashstat Ta \&No Ta Yes Ta \&No 217.It Ic history Ta \&No Ta Yes Ta \&No 218.It Ic hup Ta \&No Ta Yes Ta \&No 219.It Ic if Ta \&No Ta Yes Ta \&Yes 220.It Ic jobid Ta \&No Ta \&No Ta Yes 221.It Ic jobs Ta Yes Ta Yes Ta Yes 222.It Ic kill Ta Yes Ta Yes Ta \&No 223.It Ic limit Ta \&No Ta Yes Ta \&No 224.It Ic log Ta \&No Ta Yes Ta \&No 225.It Ic login Ta Yes Ta Yes Ta \&No 226.It Ic logout Ta \&No Ta Yes Ta \&No 227.It Ic ls-F Ta \&No Ta Yes Ta \&No 228.It Ic nice Ta Yes Ta Yes Ta \&No 229.It Ic nohup Ta Yes Ta Yes Ta \&No 230.It Ic notify Ta \&No Ta Yes Ta \&No 231.It Ic onintr Ta \&No Ta Yes Ta \&No 232.It Ic popd Ta \&No Ta Yes Ta \&No 233.It Ic printenv Ta Yes Ta Yes Ta \&No 234.It Ic pushd Ta \&No Ta Yes Ta \&No 235.It Ic pwd Ta Yes Ta \&No Ta Yes 236.It Ic read Ta Yes Ta \&No Ta Yes 237.It Ic readonly Ta \&No Ta \&No Ta Yes 238.It Ic rehash Ta \&No Ta Yes Ta \&No 239.It Ic repeat Ta \&No Ta Yes Ta \&No 240.It Ic sched Ta \&No Ta Yes Ta \&No 241.It Ic set Ta \&No Ta Yes Ta \&Yes 242.It Ic setenv Ta \&No Ta Yes Ta \&No 243.It Ic settc Ta \&No Ta Yes Ta \&No 244.It Ic setty Ta \&No Ta Yes Ta \&No 245.It Ic setvar Ta \&No Ta \&No Ta Yes 246.It Ic shift Ta \&No Ta Yes Ta Yes 247.It Ic source Ta \&No Ta Yes Ta \&No 248.It Ic stop Ta \&No Ta Yes Ta \&No 249.It Ic suspend Ta \&No Ta Yes Ta \&No 250.It Ic switch Ta \&No Ta Yes Ta \&No 251.It Ic telltc Ta \&No Ta Yes Ta \&No 252.It Ic test Ta Yes Ta \&No Ta Yes 253.It Ic then Ta \&No Ta \&No Ta Yes 254.It Ic time Ta Yes Ta Yes Ta \&No 255.It Ic trap Ta \&No Ta \&No Ta Yes 256.It Ic true Ta Yes Ta \&No Ta Yes 257.It Ic type Ta \&No Ta \&No Ta Yes 258.It Ic ulimit Ta \&No Ta \&No Ta Yes 259.It Ic umask Ta Yes Ta Yes Ta Yes 260.It Ic unalias Ta Yes Ta Yes Ta Yes 261.It Ic uncomplete Ta \&No Ta Yes Ta \&No 262.It Ic unhash Ta \&No Ta Yes Ta \&No 263.It Ic unlimit Ta \&No Ta Yes Ta \&No 264.It Ic unset Ta \&No Ta Yes Ta Yes 265.It Ic unsetenv Ta \&No Ta Yes Ta \&No 266.It Ic until Ta \&No Ta \&No Ta Yes 267.It Ic wait Ta Yes Ta Yes Ta Yes 268.It Ic where Ta \&No Ta Yes Ta \&No 269.It Ic which Ta Yes Ta Yes Ta \&No 270.It Ic while Ta \&No Ta Yes Ta \&Yes 271.El 272.Sh SEE ALSO 273.Xr csh 1 , 274.Xr echo 1 , 275.Xr false 1 , 276.Xr kill 1 , 277.Xr login 1 , 278.Xr nice 1 , 279.Xr nohup 1 , 280.Xr printenv 1 , 281.Xr pwd 1 , 282.Xr sh 1 , 283.Xr test 1 , 284.Xr time 1 , 285.Xr true 1 , 286.Xr which 1 287.Sh HISTORY 288The 289.Nm 290manual page first appeared in 291.Fx 3.4 . 292.Sh AUTHORS 293This manual page was written by 294.An Sheldon Hearn Aq sheldonh@FreeBSD.org .