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Why does apt-get install python3 with a trailing hyphen remove a lot of packages?

apt-get install with '-' removes?“sudo apt -get install foo-” causes removing foo package and everything depends on itDefault path changed after uninstalling python and reinstalling ubuntu-desktopMust execute “sudo su” and then do apt-get update/upgrade/install, prefacing with sudo doesn't workRedirected OutputThe colors when doing “ls” at my ubuntu server diappeared just like thatError with sudo apt-get -f install (ldconfig not found)How can i fix my Terminal login issue?Command not found: apt-getHow to restore after accidentally apt-get remove pythonI am having a problem with the package manager on 18.04 LTSsudo: apt: command not found

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6

While is was installing something with the sudo apt-get install command I accidentally accepted the command

sudo apt-get install python3-

(yeah I know it is stupid to just accept this but I did a lot of those and i just continued to click y).

By executing the command I deleted my whole visual desktop of Ubuntu (I just had the plain shell but I recovered the visual desktop by now). I don't know if I am just stupid but nevertheless I want to create awareness that you shouldn't use the command.

If you can explain to me why happened what happened feel free to explain it to me.

command-line apt

share|improve this question

edited 3 mins ago

Community♦

1

asked 10 hours ago

Mettigel4_1Mettigel4_1

371

New contributor

Mettigel4_1 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  6
  

  
  
  
  
  
  

  
  
  Documented features are not bugs.
  
  – guiverc
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I’m curious -why- this was decided to be the intended behavior. Seems unnecessary, and as the OP found, destructive.
  
  – Scot
  50 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of "sudo apt -get install foo-" causes removing foo package and everything depends on it && askubuntu.com/questions/880291/apt-get-install-with-removes
  
  – pomsky
  3 mins ago
  
  

  
  
  
  

add a comment | 

6

While is was installing something with the sudo apt-get install command I accidentally accepted the command

sudo apt-get install python3-

(yeah I know it is stupid to just accept this but I did a lot of those and i just continued to click y).

By executing the command I deleted my whole visual desktop of Ubuntu (I just had the plain shell but I recovered the visual desktop by now). I don't know if I am just stupid but nevertheless I want to create awareness that you shouldn't use the command.

If you can explain to me why happened what happened feel free to explain it to me.

command-line apt

share|improve this question

edited 3 mins ago

Community♦

1

asked 10 hours ago

Mettigel4_1Mettigel4_1

371

New contributor

Mettigel4_1 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

• 
  
  
  

  
  6
  

  
  
  
  
  
  

  
  
  Documented features are not bugs.
  
  – guiverc
  7 hours ago
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  I’m curious -why- this was decided to be the intended behavior. Seems unnecessary, and as the OP found, destructive.
  
  – Scot
  50 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of "sudo apt -get install foo-" causes removing foo package and everything depends on it && askubuntu.com/questions/880291/apt-get-install-with-removes
  
  – pomsky
  3 mins ago
  
  

  
  
  
  

add a comment | 

While is was installing something with the sudo apt-get install command I accidentally accepted the command

sudo apt-get install python3-

(yeah I know it is stupid to just accept this but I did a lot of those and i just continued to click y).

By executing the command I deleted my whole visual desktop of Ubuntu (I just had the plain shell but I recovered the visual desktop by now). I don't know if I am just stupid but nevertheless I want to create awareness that you shouldn't use the command.

If you can explain to me why happened what happened feel free to explain it to me.

command-line apt

share|improve this question

edited 3 mins ago

Community♦

1

asked 10 hours ago

Mettigel4_1Mettigel4_1

371

New contributor

Mettigel4_1 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

sudo apt-get install python3-

share|improve this question

edited 3 mins ago

Community♦

1

asked 10 hours ago

Mettigel4_1Mettigel4_1

371

New contributor

Mettigel4_1 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

edited 3 mins ago

Community♦

1

asked 10 hours ago

Mettigel4_1Mettigel4_1

371

New contributor

Mettigel4_1 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 3 mins ago

Community♦

1

edited 3 mins ago

Community♦

1

asked 10 hours ago

Mettigel4_1Mettigel4_1

371

New contributor

Mettigel4_1 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 10 hours ago

Mettigel4_1Mettigel4_1

371

2 Answers
2

active

oldest

votes

19

This is not a bug; this is documented in the man page. From man apt-get's install section¹ (emphasis mine):

If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it is installed. Similarly a plus sign can be used to designate a package to install.

So, when you did:

sudo apt-get install python3-

you've removed the python3 package and all the dependent packages (which includes the packages you mentioned).

---

Fix:

To re-install the removed packages, go to /var/log/apt/history.log, pick the packages, and run sudo apt-get install on them.

You might also want to peek into /var/log/dpkg.log.

---

¹ If you have less as the man pager, you can go to the install section of man apt-get directly:

LESS='+/^[[:blank:]]+install' man apt-get

share|improve this answer

edited 9 hours ago

answered 10 hours ago

heemaylheemayl

68.1k11142215

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  It might be worth mentioning that sudo apt-get install ubuntu-desktop will get most of the desktop environment back with a single command, without needing to hunt down individual package names. (Of course that doesn't cover whatever one has installed manually on top of the defaults, but further recovery can proceed in an environment that may be more familiar than the Linux console).
  
  – Henning Makholm
  7 hours ago
  
  

  
  
  
  

add a comment | 

9

No, you didn't find a bug. From man apt-get:

If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it is installed. Similarly a plus sign can be used to designate a package to install. These latter features may be used to override decisions made by apt-get's conflict resolution system.

It's intentional. I'm not sure it's good design, but it is worth reading what changes apt proposes before proceeding.

Combined with globbing it may produce some rather... spectacular results at times.

share|improve this answer

edited 10 hours ago

N0rbert

25.1k853118

answered 10 hours ago

vidarlovidarlo

10.7k52851

add a comment | 

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19

This is not a bug; this is documented in the man page. From man apt-get's install section¹ (emphasis mine):

If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it is installed. Similarly a plus sign can be used to designate a package to install.

So, when you did:

sudo apt-get install python3-

you've removed the python3 package and all the dependent packages (which includes the packages you mentioned).

---

Fix:

To re-install the removed packages, go to /var/log/apt/history.log, pick the packages, and run sudo apt-get install on them.

You might also want to peek into /var/log/dpkg.log.

---

¹ If you have less as the man pager, you can go to the install section of man apt-get directly:

LESS='+/^[[:blank:]]+install' man apt-get

share|improve this answer

edited 9 hours ago

answered 10 hours ago

heemaylheemayl

68.1k11142215

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  It might be worth mentioning that sudo apt-get install ubuntu-desktop will get most of the desktop environment back with a single command, without needing to hunt down individual package names. (Of course that doesn't cover whatever one has installed manually on top of the defaults, but further recovery can proceed in an environment that may be more familiar than the Linux console).
  
  – Henning Makholm
  7 hours ago
  
  

  
  
  
  

add a comment | 

19

This is not a bug; this is documented in the man page. From man apt-get's install section¹ (emphasis mine):

If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it is installed. Similarly a plus sign can be used to designate a package to install.

So, when you did:

sudo apt-get install python3-

you've removed the python3 package and all the dependent packages (which includes the packages you mentioned).

---

Fix:

To re-install the removed packages, go to /var/log/apt/history.log, pick the packages, and run sudo apt-get install on them.

You might also want to peek into /var/log/dpkg.log.

---

¹ If you have less as the man pager, you can go to the install section of man apt-get directly:

LESS='+/^[[:blank:]]+install' man apt-get

share|improve this answer

edited 9 hours ago

answered 10 hours ago

heemaylheemayl

68.1k11142215

• 
  
  
  

  
  5
  

  
  
  
  
  
  

  
  
  It might be worth mentioning that sudo apt-get install ubuntu-desktop will get most of the desktop environment back with a single command, without needing to hunt down individual package names. (Of course that doesn't cover whatever one has installed manually on top of the defaults, but further recovery can proceed in an environment that may be more familiar than the Linux console).
  
  – Henning Makholm
  7 hours ago
  
  

  
  
  
  

add a comment | 

This is not a bug; this is documented in the man page. From man apt-get's install section¹ (emphasis mine):

If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it is installed. Similarly a plus sign can be used to designate a package to install.

So, when you did:

sudo apt-get install python3-

you've removed the python3 package and all the dependent packages (which includes the packages you mentioned).

---

Fix:

To re-install the removed packages, go to /var/log/apt/history.log, pick the packages, and run sudo apt-get install on them.

You might also want to peek into /var/log/dpkg.log.

---

¹ If you have less as the man pager, you can go to the install section of man apt-get directly:

LESS='+/^[[:blank:]]+install' man apt-get

share|improve this answer

edited 9 hours ago

answered 10 hours ago

heemaylheemayl

68.1k11142215

sudo apt-get install python3-

LESS='+/^[[:blank:]]+install' man apt-get

share|improve this answer

edited 9 hours ago

answered 10 hours ago

heemaylheemayl

68.1k11142215

answered 10 hours ago

heemaylheemayl

68.1k11142215

answered 10 hours ago

heemaylheemayl

68.1k11142215

9

No, you didn't find a bug. From man apt-get:

If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it is installed. Similarly a plus sign can be used to designate a package to install. These latter features may be used to override decisions made by apt-get's conflict resolution system.

It's intentional. I'm not sure it's good design, but it is worth reading what changes apt proposes before proceeding.

Combined with globbing it may produce some rather... spectacular results at times.

share|improve this answer

edited 10 hours ago

N0rbert

25.1k853118

answered 10 hours ago

vidarlovidarlo

10.7k52851

add a comment | 

9

No, you didn't find a bug. From man apt-get:

If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it is installed. Similarly a plus sign can be used to designate a package to install. These latter features may be used to override decisions made by apt-get's conflict resolution system.

It's intentional. I'm not sure it's good design, but it is worth reading what changes apt proposes before proceeding.

Combined with globbing it may produce some rather... spectacular results at times.

share|improve this answer

edited 10 hours ago

N0rbert

25.1k853118

answered 10 hours ago

vidarlovidarlo

10.7k52851

add a comment | 

No, you didn't find a bug. From man apt-get:

If a hyphen is appended to the package name (with no intervening space), the identified package will be removed if it is installed. Similarly a plus sign can be used to designate a package to install. These latter features may be used to override decisions made by apt-get's conflict resolution system.

It's intentional. I'm not sure it's good design, but it is worth reading what changes apt proposes before proceeding.

Combined with globbing it may produce some rather... spectacular results at times.

share|improve this answer

edited 10 hours ago

N0rbert

25.1k853118

answered 10 hours ago

vidarlovidarlo

10.7k52851

share|improve this answer

edited 10 hours ago

N0rbert

25.1k853118

answered 10 hours ago

vidarlovidarlo

10.7k52851

edited 10 hours ago

N0rbert

25.1k853118

edited 10 hours ago

N0rbert

25.1k853118

answered 10 hours ago

vidarlovidarlo

10.7k52851

answered 10 hours ago

vidarlovidarlo

10.7k52851