What is a tty, and how do I access a tty?
up vote
51
down vote
favorite
I keep hearing about these things known as tty
's.
what are they
how can I access them
what do they do?
command-line tty
add a comment |
up vote
51
down vote
favorite
I keep hearing about these things known as tty
's.
what are they
how can I access them
what do they do?
command-line tty
Here is the link that should answer your question: askubuntu.com/questions/27339/what-is-tty7-in-the-commandline
– Wojciech
Oct 14 '11 at 14:37
add a comment |
up vote
51
down vote
favorite
up vote
51
down vote
favorite
I keep hearing about these things known as tty
's.
what are they
how can I access them
what do they do?
command-line tty
I keep hearing about these things known as tty
's.
what are they
how can I access them
what do they do?
command-line tty
command-line tty
edited Oct 14 '11 at 14:35
asked Oct 14 '11 at 14:29
jrg♦
39k50149235
39k50149235
Here is the link that should answer your question: askubuntu.com/questions/27339/what-is-tty7-in-the-commandline
– Wojciech
Oct 14 '11 at 14:37
add a comment |
Here is the link that should answer your question: askubuntu.com/questions/27339/what-is-tty7-in-the-commandline
– Wojciech
Oct 14 '11 at 14:37
Here is the link that should answer your question: askubuntu.com/questions/27339/what-is-tty7-in-the-commandline
– Wojciech
Oct 14 '11 at 14:37
Here is the link that should answer your question: askubuntu.com/questions/27339/what-is-tty7-in-the-commandline
– Wojciech
Oct 14 '11 at 14:37
add a comment |
4 Answers
4
active
oldest
votes
up vote
52
down vote
accepted
tty
is one of those funky Unix commands that prints the name of the terminal connected to standard input.
TTY's are text-only terminals commonly used as a way to get access to the computer to fix things, without actually logging into a possibly b0rked desktop.
Related: What is tty7 in the commandline?
By default Ubuntu has 7 tty's.
- Up until Ubuntu 17.10,
1-6
are command line only and7
runs your X session (your normal desktop). - On Ubuntu 17.10 and newer, it's GUI login screen on
1
, GUI desktop on2
and command lines on3-7
.
To access them, use this keyboard shortcut:
Ctrl + Alt + F1 (or F3 on 17.10 and newer)
(changing F1 to F1-F6 to access the terminal that you want)
To get back to your GUI session (the normal desktop):
Ctrl + Alt + F7 (or F2 on 17.10 and newer)
6
Sir you have mentioned " to F1-F6 to access the terminal that you need" , how they are different and how to use them as per to need ,what kind of need is supported to which terminal. I dont know if it is the right place but your question and answer pointed it for me.
– Sukupa91
Nov 30 '13 at 12:40
1
actually, if you are not in an X session, you can type just Alt+F7, you don't need the Ctrl.
– fonini
Dec 27 '14 at 4:19
add a comment |
up vote
3
down vote
You can change the displayed TTY by commmand line with chvt
(requires sudo
privileges), from SSH for example. Here is the relevant part of the manpage (man chvt
):
CHVT(1)
NAME
chvt - change foreground virtual terminal
SYNOPSIS
chvt N
DESCRIPTION
The command chvt N makes /dev/ttyN the foreground terminal.
(The corresponding screen is created if it did not exist yet.
To get rid of unused VTs, use deallocvt)
The key combination (Ctrl-)LeftAlt-FN (with N in the range 1-12) usually has a similar effect.
e.g. chvt 1 to switch to tty1
– carefulnow1
Nov 20 '16 at 12:47
add a comment |
up vote
1
down vote
A tty, short for teletype and perhaps more commonly called a terminal, is a device which lets you interact with the system by sending and receiving data, such as commands and the output they produce.
There are many kind of ttys, but nowadays most ttys are implemented in software, such as the graphical consoles you can access with Ctrl+Alt+Fn, or terminal emulators such as Gnome terminal that run inside an X session.
There is also a tty
command, which shows the device node of the terminal in which it is running (or prints "not a tty" if it is not running inside a terminal; yes, it is possible to run commands outside a terminal). For example:
firas@itsuki ~ % tty
/dev/pts/0
firas@itsuki ~ % ssh localhost tty
not a tty
When I am logged in and running a shell on the machine, the shell is normally running inside a terminal, namely here it is /dev/pts/0
. However, when I run ssh host command
to run a command on a remote host, the command is not run inside a terminal.
add a comment |
up vote
0
down vote
It changes your workspace: for example, you could have a text file open and change to tty2 then you might have a /ls command for reference. This is very helpful for an environment like Ubuntu Server.
This is the equivalent of having two tabs open in a GUI Environment.
In Ubuntu Server (16.04.3 LTS - for me) I can use ALT+F1-F6 or use ALT+LeftArrow to go back a number or ALT+RightArrow to go forwards a number.
You can see your tty by logging out from Ubuntu Server (run logout
) and see up at the top Ubuntu 16.04.3 LTS ubuntu tty#
that is standard, but may differ from version to version.
If your tty isn't shown on your login screen then you can run sudo nano /etc/issue
and at the top, you can put in whatever you like but to add the tty you need to place l
. Place n
for the hostname.
Example:
/etc/issue
Ubuntu 16.04.3 LTS n l
would show
Ubuntu 16.04.3 LTS ubuntu tty#
Notes:
#
refers to a number
I think you've made a good start at answering the "what do they do" part of the question though its still a bit above my head. There's something in your first sentence that I didn't follow. Could you clarify, for example, if I have a text file open in the normal GUI, then what can I achieve by accessing a tty that I can't do in the GUI?
– Puffin
Oct 4 at 21:29
add a comment |
4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
52
down vote
accepted
tty
is one of those funky Unix commands that prints the name of the terminal connected to standard input.
TTY's are text-only terminals commonly used as a way to get access to the computer to fix things, without actually logging into a possibly b0rked desktop.
Related: What is tty7 in the commandline?
By default Ubuntu has 7 tty's.
- Up until Ubuntu 17.10,
1-6
are command line only and7
runs your X session (your normal desktop). - On Ubuntu 17.10 and newer, it's GUI login screen on
1
, GUI desktop on2
and command lines on3-7
.
To access them, use this keyboard shortcut:
Ctrl + Alt + F1 (or F3 on 17.10 and newer)
(changing F1 to F1-F6 to access the terminal that you want)
To get back to your GUI session (the normal desktop):
Ctrl + Alt + F7 (or F2 on 17.10 and newer)
6
Sir you have mentioned " to F1-F6 to access the terminal that you need" , how they are different and how to use them as per to need ,what kind of need is supported to which terminal. I dont know if it is the right place but your question and answer pointed it for me.
– Sukupa91
Nov 30 '13 at 12:40
1
actually, if you are not in an X session, you can type just Alt+F7, you don't need the Ctrl.
– fonini
Dec 27 '14 at 4:19
add a comment |
up vote
52
down vote
accepted
tty
is one of those funky Unix commands that prints the name of the terminal connected to standard input.
TTY's are text-only terminals commonly used as a way to get access to the computer to fix things, without actually logging into a possibly b0rked desktop.
Related: What is tty7 in the commandline?
By default Ubuntu has 7 tty's.
- Up until Ubuntu 17.10,
1-6
are command line only and7
runs your X session (your normal desktop). - On Ubuntu 17.10 and newer, it's GUI login screen on
1
, GUI desktop on2
and command lines on3-7
.
To access them, use this keyboard shortcut:
Ctrl + Alt + F1 (or F3 on 17.10 and newer)
(changing F1 to F1-F6 to access the terminal that you want)
To get back to your GUI session (the normal desktop):
Ctrl + Alt + F7 (or F2 on 17.10 and newer)
6
Sir you have mentioned " to F1-F6 to access the terminal that you need" , how they are different and how to use them as per to need ,what kind of need is supported to which terminal. I dont know if it is the right place but your question and answer pointed it for me.
– Sukupa91
Nov 30 '13 at 12:40
1
actually, if you are not in an X session, you can type just Alt+F7, you don't need the Ctrl.
– fonini
Dec 27 '14 at 4:19
add a comment |
up vote
52
down vote
accepted
up vote
52
down vote
accepted
tty
is one of those funky Unix commands that prints the name of the terminal connected to standard input.
TTY's are text-only terminals commonly used as a way to get access to the computer to fix things, without actually logging into a possibly b0rked desktop.
Related: What is tty7 in the commandline?
By default Ubuntu has 7 tty's.
- Up until Ubuntu 17.10,
1-6
are command line only and7
runs your X session (your normal desktop). - On Ubuntu 17.10 and newer, it's GUI login screen on
1
, GUI desktop on2
and command lines on3-7
.
To access them, use this keyboard shortcut:
Ctrl + Alt + F1 (or F3 on 17.10 and newer)
(changing F1 to F1-F6 to access the terminal that you want)
To get back to your GUI session (the normal desktop):
Ctrl + Alt + F7 (or F2 on 17.10 and newer)
tty
is one of those funky Unix commands that prints the name of the terminal connected to standard input.
TTY's are text-only terminals commonly used as a way to get access to the computer to fix things, without actually logging into a possibly b0rked desktop.
Related: What is tty7 in the commandline?
By default Ubuntu has 7 tty's.
- Up until Ubuntu 17.10,
1-6
are command line only and7
runs your X session (your normal desktop). - On Ubuntu 17.10 and newer, it's GUI login screen on
1
, GUI desktop on2
and command lines on3-7
.
To access them, use this keyboard shortcut:
Ctrl + Alt + F1 (or F3 on 17.10 and newer)
(changing F1 to F1-F6 to access the terminal that you want)
To get back to your GUI session (the normal desktop):
Ctrl + Alt + F7 (or F2 on 17.10 and newer)
edited Dec 4 at 1:19
wjandrea
8,06142258
8,06142258
answered Oct 14 '11 at 14:32
jrg♦
39k50149235
39k50149235
6
Sir you have mentioned " to F1-F6 to access the terminal that you need" , how they are different and how to use them as per to need ,what kind of need is supported to which terminal. I dont know if it is the right place but your question and answer pointed it for me.
– Sukupa91
Nov 30 '13 at 12:40
1
actually, if you are not in an X session, you can type just Alt+F7, you don't need the Ctrl.
– fonini
Dec 27 '14 at 4:19
add a comment |
6
Sir you have mentioned " to F1-F6 to access the terminal that you need" , how they are different and how to use them as per to need ,what kind of need is supported to which terminal. I dont know if it is the right place but your question and answer pointed it for me.
– Sukupa91
Nov 30 '13 at 12:40
1
actually, if you are not in an X session, you can type just Alt+F7, you don't need the Ctrl.
– fonini
Dec 27 '14 at 4:19
6
6
Sir you have mentioned " to F1-F6 to access the terminal that you need" , how they are different and how to use them as per to need ,what kind of need is supported to which terminal. I dont know if it is the right place but your question and answer pointed it for me.
– Sukupa91
Nov 30 '13 at 12:40
Sir you have mentioned " to F1-F6 to access the terminal that you need" , how they are different and how to use them as per to need ,what kind of need is supported to which terminal. I dont know if it is the right place but your question and answer pointed it for me.
– Sukupa91
Nov 30 '13 at 12:40
1
1
actually, if you are not in an X session, you can type just Alt+F7, you don't need the Ctrl.
– fonini
Dec 27 '14 at 4:19
actually, if you are not in an X session, you can type just Alt+F7, you don't need the Ctrl.
– fonini
Dec 27 '14 at 4:19
add a comment |
up vote
3
down vote
You can change the displayed TTY by commmand line with chvt
(requires sudo
privileges), from SSH for example. Here is the relevant part of the manpage (man chvt
):
CHVT(1)
NAME
chvt - change foreground virtual terminal
SYNOPSIS
chvt N
DESCRIPTION
The command chvt N makes /dev/ttyN the foreground terminal.
(The corresponding screen is created if it did not exist yet.
To get rid of unused VTs, use deallocvt)
The key combination (Ctrl-)LeftAlt-FN (with N in the range 1-12) usually has a similar effect.
e.g. chvt 1 to switch to tty1
– carefulnow1
Nov 20 '16 at 12:47
add a comment |
up vote
3
down vote
You can change the displayed TTY by commmand line with chvt
(requires sudo
privileges), from SSH for example. Here is the relevant part of the manpage (man chvt
):
CHVT(1)
NAME
chvt - change foreground virtual terminal
SYNOPSIS
chvt N
DESCRIPTION
The command chvt N makes /dev/ttyN the foreground terminal.
(The corresponding screen is created if it did not exist yet.
To get rid of unused VTs, use deallocvt)
The key combination (Ctrl-)LeftAlt-FN (with N in the range 1-12) usually has a similar effect.
e.g. chvt 1 to switch to tty1
– carefulnow1
Nov 20 '16 at 12:47
add a comment |
up vote
3
down vote
up vote
3
down vote
You can change the displayed TTY by commmand line with chvt
(requires sudo
privileges), from SSH for example. Here is the relevant part of the manpage (man chvt
):
CHVT(1)
NAME
chvt - change foreground virtual terminal
SYNOPSIS
chvt N
DESCRIPTION
The command chvt N makes /dev/ttyN the foreground terminal.
(The corresponding screen is created if it did not exist yet.
To get rid of unused VTs, use deallocvt)
The key combination (Ctrl-)LeftAlt-FN (with N in the range 1-12) usually has a similar effect.
You can change the displayed TTY by commmand line with chvt
(requires sudo
privileges), from SSH for example. Here is the relevant part of the manpage (man chvt
):
CHVT(1)
NAME
chvt - change foreground virtual terminal
SYNOPSIS
chvt N
DESCRIPTION
The command chvt N makes /dev/ttyN the foreground terminal.
(The corresponding screen is created if it did not exist yet.
To get rid of unused VTs, use deallocvt)
The key combination (Ctrl-)LeftAlt-FN (with N in the range 1-12) usually has a similar effect.
edited Apr 2 '15 at 9:43
Karl Richter
2,35183467
2,35183467
answered Apr 2 '15 at 8:23
JulienBu
312
312
e.g. chvt 1 to switch to tty1
– carefulnow1
Nov 20 '16 at 12:47
add a comment |
e.g. chvt 1 to switch to tty1
– carefulnow1
Nov 20 '16 at 12:47
e.g. chvt 1 to switch to tty1
– carefulnow1
Nov 20 '16 at 12:47
e.g. chvt 1 to switch to tty1
– carefulnow1
Nov 20 '16 at 12:47
add a comment |
up vote
1
down vote
A tty, short for teletype and perhaps more commonly called a terminal, is a device which lets you interact with the system by sending and receiving data, such as commands and the output they produce.
There are many kind of ttys, but nowadays most ttys are implemented in software, such as the graphical consoles you can access with Ctrl+Alt+Fn, or terminal emulators such as Gnome terminal that run inside an X session.
There is also a tty
command, which shows the device node of the terminal in which it is running (or prints "not a tty" if it is not running inside a terminal; yes, it is possible to run commands outside a terminal). For example:
firas@itsuki ~ % tty
/dev/pts/0
firas@itsuki ~ % ssh localhost tty
not a tty
When I am logged in and running a shell on the machine, the shell is normally running inside a terminal, namely here it is /dev/pts/0
. However, when I run ssh host command
to run a command on a remote host, the command is not run inside a terminal.
add a comment |
up vote
1
down vote
A tty, short for teletype and perhaps more commonly called a terminal, is a device which lets you interact with the system by sending and receiving data, such as commands and the output they produce.
There are many kind of ttys, but nowadays most ttys are implemented in software, such as the graphical consoles you can access with Ctrl+Alt+Fn, or terminal emulators such as Gnome terminal that run inside an X session.
There is also a tty
command, which shows the device node of the terminal in which it is running (or prints "not a tty" if it is not running inside a terminal; yes, it is possible to run commands outside a terminal). For example:
firas@itsuki ~ % tty
/dev/pts/0
firas@itsuki ~ % ssh localhost tty
not a tty
When I am logged in and running a shell on the machine, the shell is normally running inside a terminal, namely here it is /dev/pts/0
. However, when I run ssh host command
to run a command on a remote host, the command is not run inside a terminal.
add a comment |
up vote
1
down vote
up vote
1
down vote
A tty, short for teletype and perhaps more commonly called a terminal, is a device which lets you interact with the system by sending and receiving data, such as commands and the output they produce.
There are many kind of ttys, but nowadays most ttys are implemented in software, such as the graphical consoles you can access with Ctrl+Alt+Fn, or terminal emulators such as Gnome terminal that run inside an X session.
There is also a tty
command, which shows the device node of the terminal in which it is running (or prints "not a tty" if it is not running inside a terminal; yes, it is possible to run commands outside a terminal). For example:
firas@itsuki ~ % tty
/dev/pts/0
firas@itsuki ~ % ssh localhost tty
not a tty
When I am logged in and running a shell on the machine, the shell is normally running inside a terminal, namely here it is /dev/pts/0
. However, when I run ssh host command
to run a command on a remote host, the command is not run inside a terminal.
A tty, short for teletype and perhaps more commonly called a terminal, is a device which lets you interact with the system by sending and receiving data, such as commands and the output they produce.
There are many kind of ttys, but nowadays most ttys are implemented in software, such as the graphical consoles you can access with Ctrl+Alt+Fn, or terminal emulators such as Gnome terminal that run inside an X session.
There is also a tty
command, which shows the device node of the terminal in which it is running (or prints "not a tty" if it is not running inside a terminal; yes, it is possible to run commands outside a terminal). For example:
firas@itsuki ~ % tty
/dev/pts/0
firas@itsuki ~ % ssh localhost tty
not a tty
When I am logged in and running a shell on the machine, the shell is normally running inside a terminal, namely here it is /dev/pts/0
. However, when I run ssh host command
to run a command on a remote host, the command is not run inside a terminal.
answered Jan 10 at 6:04
fkraiem
8,67231728
8,67231728
add a comment |
add a comment |
up vote
0
down vote
It changes your workspace: for example, you could have a text file open and change to tty2 then you might have a /ls command for reference. This is very helpful for an environment like Ubuntu Server.
This is the equivalent of having two tabs open in a GUI Environment.
In Ubuntu Server (16.04.3 LTS - for me) I can use ALT+F1-F6 or use ALT+LeftArrow to go back a number or ALT+RightArrow to go forwards a number.
You can see your tty by logging out from Ubuntu Server (run logout
) and see up at the top Ubuntu 16.04.3 LTS ubuntu tty#
that is standard, but may differ from version to version.
If your tty isn't shown on your login screen then you can run sudo nano /etc/issue
and at the top, you can put in whatever you like but to add the tty you need to place l
. Place n
for the hostname.
Example:
/etc/issue
Ubuntu 16.04.3 LTS n l
would show
Ubuntu 16.04.3 LTS ubuntu tty#
Notes:
#
refers to a number
I think you've made a good start at answering the "what do they do" part of the question though its still a bit above my head. There's something in your first sentence that I didn't follow. Could you clarify, for example, if I have a text file open in the normal GUI, then what can I achieve by accessing a tty that I can't do in the GUI?
– Puffin
Oct 4 at 21:29
add a comment |
up vote
0
down vote
It changes your workspace: for example, you could have a text file open and change to tty2 then you might have a /ls command for reference. This is very helpful for an environment like Ubuntu Server.
This is the equivalent of having two tabs open in a GUI Environment.
In Ubuntu Server (16.04.3 LTS - for me) I can use ALT+F1-F6 or use ALT+LeftArrow to go back a number or ALT+RightArrow to go forwards a number.
You can see your tty by logging out from Ubuntu Server (run logout
) and see up at the top Ubuntu 16.04.3 LTS ubuntu tty#
that is standard, but may differ from version to version.
If your tty isn't shown on your login screen then you can run sudo nano /etc/issue
and at the top, you can put in whatever you like but to add the tty you need to place l
. Place n
for the hostname.
Example:
/etc/issue
Ubuntu 16.04.3 LTS n l
would show
Ubuntu 16.04.3 LTS ubuntu tty#
Notes:
#
refers to a number
I think you've made a good start at answering the "what do they do" part of the question though its still a bit above my head. There's something in your first sentence that I didn't follow. Could you clarify, for example, if I have a text file open in the normal GUI, then what can I achieve by accessing a tty that I can't do in the GUI?
– Puffin
Oct 4 at 21:29
add a comment |
up vote
0
down vote
up vote
0
down vote
It changes your workspace: for example, you could have a text file open and change to tty2 then you might have a /ls command for reference. This is very helpful for an environment like Ubuntu Server.
This is the equivalent of having two tabs open in a GUI Environment.
In Ubuntu Server (16.04.3 LTS - for me) I can use ALT+F1-F6 or use ALT+LeftArrow to go back a number or ALT+RightArrow to go forwards a number.
You can see your tty by logging out from Ubuntu Server (run logout
) and see up at the top Ubuntu 16.04.3 LTS ubuntu tty#
that is standard, but may differ from version to version.
If your tty isn't shown on your login screen then you can run sudo nano /etc/issue
and at the top, you can put in whatever you like but to add the tty you need to place l
. Place n
for the hostname.
Example:
/etc/issue
Ubuntu 16.04.3 LTS n l
would show
Ubuntu 16.04.3 LTS ubuntu tty#
Notes:
#
refers to a number
It changes your workspace: for example, you could have a text file open and change to tty2 then you might have a /ls command for reference. This is very helpful for an environment like Ubuntu Server.
This is the equivalent of having two tabs open in a GUI Environment.
In Ubuntu Server (16.04.3 LTS - for me) I can use ALT+F1-F6 or use ALT+LeftArrow to go back a number or ALT+RightArrow to go forwards a number.
You can see your tty by logging out from Ubuntu Server (run logout
) and see up at the top Ubuntu 16.04.3 LTS ubuntu tty#
that is standard, but may differ from version to version.
If your tty isn't shown on your login screen then you can run sudo nano /etc/issue
and at the top, you can put in whatever you like but to add the tty you need to place l
. Place n
for the hostname.
Example:
/etc/issue
Ubuntu 16.04.3 LTS n l
would show
Ubuntu 16.04.3 LTS ubuntu tty#
Notes:
#
refers to a number
edited Oct 5 at 22:07
answered Jan 10 at 4:04
Nicolas Hanna
631312
631312
I think you've made a good start at answering the "what do they do" part of the question though its still a bit above my head. There's something in your first sentence that I didn't follow. Could you clarify, for example, if I have a text file open in the normal GUI, then what can I achieve by accessing a tty that I can't do in the GUI?
– Puffin
Oct 4 at 21:29
add a comment |
I think you've made a good start at answering the "what do they do" part of the question though its still a bit above my head. There's something in your first sentence that I didn't follow. Could you clarify, for example, if I have a text file open in the normal GUI, then what can I achieve by accessing a tty that I can't do in the GUI?
– Puffin
Oct 4 at 21:29
I think you've made a good start at answering the "what do they do" part of the question though its still a bit above my head. There's something in your first sentence that I didn't follow. Could you clarify, for example, if I have a text file open in the normal GUI, then what can I achieve by accessing a tty that I can't do in the GUI?
– Puffin
Oct 4 at 21:29
I think you've made a good start at answering the "what do they do" part of the question though its still a bit above my head. There's something in your first sentence that I didn't follow. Could you clarify, for example, if I have a text file open in the normal GUI, then what can I achieve by accessing a tty that I can't do in the GUI?
– Puffin
Oct 4 at 21:29
add a comment |
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Here is the link that should answer your question: askubuntu.com/questions/27339/what-is-tty7-in-the-commandline
– Wojciech
Oct 14 '11 at 14:37