What does 'script /dev/null' do?Run bash script on startup in Linux Mint and open mate-terminal automaticallyttyUSB0 serial port crashes and locks, requires computer resetHow to make a comprehensive set of possibilities for defining GNU-screen “command characters”?How to switch to another screen to run git commands while resolving conflicts (blocking command)?Do I really need -dmS option in screen to run background job stably even log out?Screen session started from rc.local is not visible in screen -ls under rootSu as root and run command in one lineHow to send keystrokes before interactive shell to automate Linux serial port login with GNU screen?How to setup starting file location for a user using FTPDifference between >/dev/null 2>&1 & and </dev/null &>/dev/null &
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What does 'script /dev/null' do?
Run bash script on startup in Linux Mint and open mate-terminal automaticallyttyUSB0 serial port crashes and locks, requires computer resetHow to make a comprehensive set of possibilities for defining GNU-screen “command characters”?How to switch to another screen to run git commands while resolving conflicts (blocking command)?Do I really need -dmS option in screen to run background job stably even log out?Screen session started from rc.local is not visible in screen -ls under rootSu as root and run command in one lineHow to send keystrokes before interactive shell to automate Linux serial port login with GNU screen?How to setup starting file location for a user using FTPDifference between >/dev/null 2>&1 & and </dev/null &>/dev/null &
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
Every time I log into a VM with root, su into a user account, and try to use screen it throws an error:
Cannot open your terminal '/dev/pts/0' - please check.
A Stack Overflow post said I needed to use script /dev/null to fix it, and it works, but it still doesn't explain why I need to type script /dev/null. I would like to understand what it does and why I need to type it.
terminal gnu-screen su pty
edited Apr 9 at 11:47
törzsmókus
1156
asked Apr 8 at 16:04
CJLCJL
1036
add a comment |
Every time I log into a VM with root, su into a user account, and try to use screen it throws an error:
Cannot open your terminal '/dev/pts/0' - please check.
A Stack Overflow post said I needed to use script /dev/null to fix it, and it works, but it still doesn't explain why I need to type script /dev/null. I would like to understand what it does and why I need to type it.
terminal gnu-screen su pty
edited Apr 9 at 11:47
törzsmókus
1156
asked Apr 8 at 16:04
CJLCJL
1036
2
> A Stack Overflow post said – it might be helpful if you also add a link to that post, maybe in a comment.
– törzsmókus
Apr 9 at 11:01
add a comment |
Every time I log into a VM with root, su into a user account, and try to use screen it throws an error:
Cannot open your terminal '/dev/pts/0' - please check.
A Stack Overflow post said I needed to use script /dev/null to fix it, and it works, but it still doesn't explain why I need to type script /dev/null. I would like to understand what it does and why I need to type it.
terminal gnu-screen su pty
edited Apr 9 at 11:47
törzsmókus
1156
asked Apr 8 at 16:04
CJLCJL
1036
Every time I log into a VM with root, su into a user account, and try to use screen it throws an error:
Cannot open your terminal '/dev/pts/0' - please check.
A Stack Overflow post said I needed to use script /dev/null to fix it, and it works, but it still doesn't explain why I need to type script /dev/null. I would like to understand what it does and why I need to type it.
terminal gnu-screen su pty
terminal gnu-screen su pty
edited Apr 9 at 11:47
törzsmókus
1156
asked Apr 8 at 16:04
CJLCJL
1036
edited Apr 9 at 11:47
törzsmókus
1156
asked Apr 8 at 16:04
CJLCJL
1036
edited Apr 9 at 11:47
törzsmókus
1156
edited Apr 9 at 11:47
törzsmókus
1156
edited Apr 9 at 11:47
törzsmókus
1156
1156
asked Apr 8 at 16:04
CJLCJL
1036
asked Apr 8 at 16:04
CJLCJL
1036
asked Apr 8 at 16:04
CJLCJL
1036
1036
2
> A Stack Overflow post said – it might be helpful if you also add a link to that post, maybe in a comment.
– törzsmókus
Apr 9 at 11:01
add a comment |
2
> A Stack Overflow post said – it might be helpful if you also add a link to that post, maybe in a comment.
– törzsmókus
Apr 9 at 11:01
2
2
> A Stack Overflow post said – it might be helpful if you also add a link to that post, maybe in a comment.
– törzsmókus
Apr 9 at 11:01
> A Stack Overflow post said – it might be helpful if you also add a link to that post, maybe in a comment.
– törzsmókus
Apr 9 at 11:01
add a comment |
1 Answer
1
active
oldest
votes
You cannot open /dev/pts/0 because it's owned by root, and after you su-ed into another user you're no longer able to open it via its path, but you're still able to use it via the opened handle to it, which was inherited from the parent process.
script /dev/null will create another pty, owned by the current user.
Anyways, that bug/limitation seems to have been fixed in recent versions of screen (eg. 4.99.0), which will correctly send the handle to the current terminal via the SCM_RIGHTS ancillary message on a unix domain socket, instead of sending just the name of the terminal and have the screen server try to open it (and fail). Same thing with tmux.
answered Apr 8 at 16:47
mosvymosvy
10.9k11340
add a comment |
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1 Answer
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1 Answer
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active
oldest
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votes
active
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votes
You cannot open /dev/pts/0 because it's owned by root, and after you su-ed into another user you're no longer able to open it via its path, but you're still able to use it via the opened handle to it, which was inherited from the parent process.
script /dev/null will create another pty, owned by the current user.
Anyways, that bug/limitation seems to have been fixed in recent versions of screen (eg. 4.99.0), which will correctly send the handle to the current terminal via the SCM_RIGHTS ancillary message on a unix domain socket, instead of sending just the name of the terminal and have the screen server try to open it (and fail). Same thing with tmux.
answered Apr 8 at 16:47
mosvymosvy
10.9k11340
add a comment |
You cannot open /dev/pts/0 because it's owned by root, and after you su-ed into another user you're no longer able to open it via its path, but you're still able to use it via the opened handle to it, which was inherited from the parent process.
script /dev/null will create another pty, owned by the current user.
Anyways, that bug/limitation seems to have been fixed in recent versions of screen (eg. 4.99.0), which will correctly send the handle to the current terminal via the SCM_RIGHTS ancillary message on a unix domain socket, instead of sending just the name of the terminal and have the screen server try to open it (and fail). Same thing with tmux.
answered Apr 8 at 16:47
mosvymosvy
10.9k11340
add a comment |
You cannot open /dev/pts/0 because it's owned by root, and after you su-ed into another user you're no longer able to open it via its path, but you're still able to use it via the opened handle to it, which was inherited from the parent process.
script /dev/null will create another pty, owned by the current user.
Anyways, that bug/limitation seems to have been fixed in recent versions of screen (eg. 4.99.0), which will correctly send the handle to the current terminal via the SCM_RIGHTS ancillary message on a unix domain socket, instead of sending just the name of the terminal and have the screen server try to open it (and fail). Same thing with tmux.
answered Apr 8 at 16:47
mosvymosvy
10.9k11340
You cannot open /dev/pts/0 because it's owned by root, and after you su-ed into another user you're no longer able to open it via its path, but you're still able to use it via the opened handle to it, which was inherited from the parent process.
script /dev/null will create another pty, owned by the current user.
Anyways, that bug/limitation seems to have been fixed in recent versions of screen (eg. 4.99.0), which will correctly send the handle to the current terminal via the SCM_RIGHTS ancillary message on a unix domain socket, instead of sending just the name of the terminal and have the screen server try to open it (and fail). Same thing with tmux.
answered Apr 8 at 16:47
mosvymosvy
10.9k11340
edited Apr 8 at 18:04
answered Apr 8 at 16:47
mosvymosvy
10.9k11340
answered Apr 8 at 16:47
mosvymosvy
10.9k11340
answered Apr 8 at 16:47
mosvymosvy
10.9k11340
10.9k11340
add a comment |
add a comment |
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> A Stack Overflow post said – it might be helpful if you also add a link to that post, maybe in a comment.
– törzsmókus
Apr 9 at 11:01