How to change root's shell back to bash?

up vote
5
down vote

favorite

I tried to change root's shell with chsh command, but now I get an error when I try to connect as root with sudo -i.

$ sudo -i

sudo: /usr/bin/bash: command not found

What do I have to modify to get the bash shell?

edited Nov 12 at 21:14

wjandrea

7,70642258

asked Nov 30 '16 at 3:28

Sandra Ross

3422416

add a comment |

up vote
5
down vote

favorite

I tried to change root's shell with chsh command, but now I get an error when I try to connect as root with sudo -i.

$ sudo -i

sudo: /usr/bin/bash: command not found

What do I have to modify to get the bash shell?

edited Nov 12 at 21:14

wjandrea

7,70642258

asked Nov 30 '16 at 3:28

Sandra Ross

3422416

add a comment |

up vote
5
down vote

favorite

I tried to change root's shell with chsh command, but now I get an error when I try to connect as root with sudo -i.

$ sudo -i

sudo: /usr/bin/bash: command not found

What do I have to modify to get the bash shell?

edited Nov 12 at 21:14

wjandrea

7,70642258

asked Nov 30 '16 at 3:28

Sandra Ross

3422416

I tried to change root's shell with chsh command, but now I get an error when I try to connect as root with sudo -i.

$ sudo -i

sudo: /usr/bin/bash: command not found

What do I have to modify to get the bash shell?

command-line bash root chsh

edited Nov 12 at 21:14

wjandrea

7,70642258

asked Nov 30 '16 at 3:28

Sandra Ross

3422416

edited Nov 12 at 21:14

wjandrea

7,70642258

asked Nov 30 '16 at 3:28

Sandra Ross

3422416

edited Nov 12 at 21:14

wjandrea

7,70642258

edited Nov 12 at 21:14

wjandrea

7,70642258

edited Nov 12 at 21:14

wjandrea

7,70642258

asked Nov 30 '16 at 3:28

Sandra Ross

3422416

asked Nov 30 '16 at 3:28

Sandra Ross

3422416

asked Nov 30 '16 at 3:28

Sandra Ross

3422416

add a comment |

1 Answer
1

active

oldest

votes

up vote
12
down vote

accepted

Assuming that you have not modified the path or created symlink, the default path to the bash binary is /bin/bash, not /usr/bin/bash.

The error is occurring because you have set the root's shell as /usr/bin/bash in /etc/passwd like:

root:x:0:0:root:/root:/usr/bin/bash

You need to change that to /bin/bash:

sudo usermod -s /bin/bash root

or do:

sudo vipw

and make the modifications manually.

You can obviously choose any other shell of your choice, just make sure that the path is correct. A common place to look for shell paths is /etc/shells file which contains the full paths to all the valid login shells on the system.

edited Dec 2 '16 at 2:32

wjandrea

7,70642258

answered Nov 30 '16 at 3:36

heemayl

65.2k8134208

Thanks for your answer. In the same time, I noticed I could modify the path with sudo emacs /etc/passwd
– Sandra Ross
Nov 30 '16 at 3:40

4

@SandraRoss If you are confident you can obviously do that. But i would suggest vipw as it will do the sanity checkings (e.g. syntax) over the changes to make sure everything is in place.
– heemayl
Nov 30 '16 at 3:43

1

If you don't want to usse vipw, you can check the integrity of /etc/passwd with pwck
– ohno
Nov 30 '16 at 9:00

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
12
down vote

accepted

Assuming that you have not modified the path or created symlink, the default path to the bash binary is /bin/bash, not /usr/bin/bash.

The error is occurring because you have set the root's shell as /usr/bin/bash in /etc/passwd like:

root:x:0:0:root:/root:/usr/bin/bash

You need to change that to /bin/bash:

sudo usermod -s /bin/bash root

or do:

sudo vipw

and make the modifications manually.

edited Dec 2 '16 at 2:32

wjandrea

7,70642258

answered Nov 30 '16 at 3:36

heemayl

65.2k8134208

Thanks for your answer. In the same time, I noticed I could modify the path with sudo emacs /etc/passwd
– Sandra Ross
Nov 30 '16 at 3:40

4

@SandraRoss If you are confident you can obviously do that. But i would suggest vipw as it will do the sanity checkings (e.g. syntax) over the changes to make sure everything is in place.
– heemayl
Nov 30 '16 at 3:43

1

If you don't want to usse vipw, you can check the integrity of /etc/passwd with pwck
– ohno
Nov 30 '16 at 9:00

add a comment |

up vote
12
down vote

accepted

Assuming that you have not modified the path or created symlink, the default path to the bash binary is /bin/bash, not /usr/bin/bash.

The error is occurring because you have set the root's shell as /usr/bin/bash in /etc/passwd like:

root:x:0:0:root:/root:/usr/bin/bash

You need to change that to /bin/bash:

sudo usermod -s /bin/bash root

or do:

sudo vipw

and make the modifications manually.

edited Dec 2 '16 at 2:32

wjandrea

7,70642258

answered Nov 30 '16 at 3:36

heemayl

65.2k8134208

Thanks for your answer. In the same time, I noticed I could modify the path with sudo emacs /etc/passwd
– Sandra Ross
Nov 30 '16 at 3:40

4

@SandraRoss If you are confident you can obviously do that. But i would suggest vipw as it will do the sanity checkings (e.g. syntax) over the changes to make sure everything is in place.
– heemayl
Nov 30 '16 at 3:43

1

If you don't want to usse vipw, you can check the integrity of /etc/passwd with pwck
– ohno
Nov 30 '16 at 9:00

add a comment |

up vote
12
down vote

accepted

Assuming that you have not modified the path or created symlink, the default path to the bash binary is /bin/bash, not /usr/bin/bash.

The error is occurring because you have set the root's shell as /usr/bin/bash in /etc/passwd like:

root:x:0:0:root:/root:/usr/bin/bash

You need to change that to /bin/bash:

sudo usermod -s /bin/bash root

or do:

sudo vipw

and make the modifications manually.

edited Dec 2 '16 at 2:32

wjandrea

7,70642258

answered Nov 30 '16 at 3:36

heemayl

65.2k8134208

Assuming that you have not modified the path or created symlink, the default path to the bash binary is /bin/bash, not /usr/bin/bash.

The error is occurring because you have set the root's shell as /usr/bin/bash in /etc/passwd like:

root:x:0:0:root:/root:/usr/bin/bash

You need to change that to /bin/bash:

sudo usermod -s /bin/bash root

or do:

sudo vipw

and make the modifications manually.

edited Dec 2 '16 at 2:32

wjandrea

7,70642258

answered Nov 30 '16 at 3:36

heemayl

65.2k8134208

edited Dec 2 '16 at 2:32

wjandrea

7,70642258

edited Dec 2 '16 at 2:32

wjandrea

7,70642258

edited Dec 2 '16 at 2:32

wjandrea

7,70642258

answered Nov 30 '16 at 3:36

heemayl

65.2k8134208

answered Nov 30 '16 at 3:36

heemayl

65.2k8134208

answered Nov 30 '16 at 3:36

heemayl

65.2k8134208

Thanks for your answer. In the same time, I noticed I could modify the path with sudo emacs /etc/passwd
– Sandra Ross
Nov 30 '16 at 3:40

4

@SandraRoss If you are confident you can obviously do that. But i would suggest vipw as it will do the sanity checkings (e.g. syntax) over the changes to make sure everything is in place.
– heemayl
Nov 30 '16 at 3:43

1

If you don't want to usse vipw, you can check the integrity of /etc/passwd with pwck
– ohno
Nov 30 '16 at 9:00

add a comment |

Thanks for your answer. In the same time, I noticed I could modify the path with sudo emacs /etc/passwd
– Sandra Ross
Nov 30 '16 at 3:40

4

@SandraRoss If you are confident you can obviously do that. But i would suggest vipw as it will do the sanity checkings (e.g. syntax) over the changes to make sure everything is in place.
– heemayl
Nov 30 '16 at 3:43

1

If you don't want to usse vipw, you can check the integrity of /etc/passwd with pwck
– ohno
Nov 30 '16 at 9:00

Thanks for your answer. In the same time, I noticed I could modify the path with sudo emacs /etc/passwd
– Sandra Ross
Nov 30 '16 at 3:40

@SandraRoss If you are confident you can obviously do that. But i would suggest vipw as it will do the sanity checkings (e.g. syntax) over the changes to make sure everything is in place.
– heemayl
Nov 30 '16 at 3:43

If you don't want to usse vipw, you can check the integrity of /etc/passwd with pwck
– ohno
Nov 30 '16 at 9:00

add a comment |

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