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Make “apt-get update” show “x packages can be upgraded”

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1

I'm learning the CLI interface of Advanced Packaging Tool. From the output of apt(8) when its stdout isn't a terminal, it isn't suitable for "scripts expecting stable programming interface", so I'm taking a look at apt-get(8).

One difference between apt update and apt-get update is that the latter is missing a final line after all cache has been updated:

8 packages can be upgraded. Run 'apt list --upgradable' to see them.

I want to know how I can get this exact line displayed with apt-get(8).

apt

share|improve this question

edited 3 mins ago

iBug

asked 11 mins ago

iBugiBug

1291212

add a comment | 

1

I'm learning the CLI interface of Advanced Packaging Tool. From the output of apt(8) when its stdout isn't a terminal, it isn't suitable for "scripts expecting stable programming interface", so I'm taking a look at apt-get(8).

One difference between apt update and apt-get update is that the latter is missing a final line after all cache has been updated:

8 packages can be upgraded. Run 'apt list --upgradable' to see them.

I want to know how I can get this exact line displayed with apt-get(8).

apt

share|improve this question

edited 3 mins ago

iBug

asked 11 mins ago

iBugiBug

1291212

add a comment | 

I'm learning the CLI interface of Advanced Packaging Tool. From the output of apt(8) when its stdout isn't a terminal, it isn't suitable for "scripts expecting stable programming interface", so I'm taking a look at apt-get(8).

One difference between apt update and apt-get update is that the latter is missing a final line after all cache has been updated:

8 packages can be upgraded. Run 'apt list --upgradable' to see them.

I want to know how I can get this exact line displayed with apt-get(8).

apt

share|improve this question

edited 3 mins ago

iBug

asked 11 mins ago

iBugiBug

1291212

8 packages can be upgraded. Run 'apt list --upgradable' to see them.

share|improve this question

edited 3 mins ago

iBug

asked 11 mins ago

iBugiBug

1291212

share|improve this question

edited 3 mins ago

iBug

asked 11 mins ago

iBugiBug

1291212

asked 11 mins ago

iBugiBug

1291212

asked 11 mins ago

iBugiBug

1291212

2 Answers
2

active

oldest

votes

0

From man 8 apt:

... enables some options ...

Then I went through /usr/share/doc/apt/examples/configure-index.gz (using zcat(1) to show text content) and noticed this option:

apt::cmd::show-update-stats

So I worked out the following command that did exactly what I wanted:

# apt-get -o apt::cmd::show-update-stats=true update

Tested to be working on Xenial and Bionic.

share

answered 8 mins ago

iBugiBug

1291212

add a comment | 

0

man apt-get shows:

 -s, --simulate, --just-print, --dry-run, --recon, --no-act
 No action; perform a simulation of events that would occur based on
 the current system state but do not actually change the system.
 Locking will be disabled (Debug::NoLocking) so the system state
 could change while apt-get is running. Simulations can also be
 executed by non-root users which might not have read access to all
 apt configuration distorting the simulation. A notice expressing
 this warning is also shown by default for non-root users
 (APT::Get::Show-User-Simulation-Note). Configuration Item:
 APT::Get::Simulate.

So if you just do:

apt-get upgrade --dry-run

it will output:

...
4 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
...

share

answered 4 mins ago

tudortudor

2,97651948

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yeah, I went through man 8 apt-get and found that option, but the output was different from apt.
  
  – iBug
  3 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Different how? I just checked on my system and it's identical. I thought it was identical because apt is really a programmatic wrapper around apt-get and that's the reason why the warning exists.
  
  – tudor
  24 secs ago
  

  
  
  
  

add a comment | 

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0

From man 8 apt:

... enables some options ...

Then I went through /usr/share/doc/apt/examples/configure-index.gz (using zcat(1) to show text content) and noticed this option:

apt::cmd::show-update-stats

So I worked out the following command that did exactly what I wanted:

# apt-get -o apt::cmd::show-update-stats=true update

Tested to be working on Xenial and Bionic.

share

answered 8 mins ago

iBugiBug

1291212

add a comment | 

0

From man 8 apt:

... enables some options ...

Then I went through /usr/share/doc/apt/examples/configure-index.gz (using zcat(1) to show text content) and noticed this option:

apt::cmd::show-update-stats

So I worked out the following command that did exactly what I wanted:

# apt-get -o apt::cmd::show-update-stats=true update

Tested to be working on Xenial and Bionic.

share

answered 8 mins ago

iBugiBug

1291212

add a comment | 

From man 8 apt:

... enables some options ...

Then I went through /usr/share/doc/apt/examples/configure-index.gz (using zcat(1) to show text content) and noticed this option:

apt::cmd::show-update-stats

So I worked out the following command that did exactly what I wanted:

# apt-get -o apt::cmd::show-update-stats=true update

Tested to be working on Xenial and Bionic.

share

answered 8 mins ago

iBugiBug

1291212

apt::cmd::show-update-stats

# apt-get -o apt::cmd::show-update-stats=true update

share

answered 8 mins ago

iBugiBug

1291212

answered 8 mins ago

iBugiBug

1291212

answered 8 mins ago

iBugiBug

1291212

0

man apt-get shows:

 -s, --simulate, --just-print, --dry-run, --recon, --no-act
 No action; perform a simulation of events that would occur based on
 the current system state but do not actually change the system.
 Locking will be disabled (Debug::NoLocking) so the system state
 could change while apt-get is running. Simulations can also be
 executed by non-root users which might not have read access to all
 apt configuration distorting the simulation. A notice expressing
 this warning is also shown by default for non-root users
 (APT::Get::Show-User-Simulation-Note). Configuration Item:
 APT::Get::Simulate.

So if you just do:

apt-get upgrade --dry-run

it will output:

...
4 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
...

share

answered 4 mins ago

tudortudor

2,97651948

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yeah, I went through man 8 apt-get and found that option, but the output was different from apt.
  
  – iBug
  3 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Different how? I just checked on my system and it's identical. I thought it was identical because apt is really a programmatic wrapper around apt-get and that's the reason why the warning exists.
  
  – tudor
  24 secs ago
  

  
  
  
  

add a comment | 

0

man apt-get shows:

 -s, --simulate, --just-print, --dry-run, --recon, --no-act
 No action; perform a simulation of events that would occur based on
 the current system state but do not actually change the system.
 Locking will be disabled (Debug::NoLocking) so the system state
 could change while apt-get is running. Simulations can also be
 executed by non-root users which might not have read access to all
 apt configuration distorting the simulation. A notice expressing
 this warning is also shown by default for non-root users
 (APT::Get::Show-User-Simulation-Note). Configuration Item:
 APT::Get::Simulate.

So if you just do:

apt-get upgrade --dry-run

it will output:

...
4 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
...

share

answered 4 mins ago

tudortudor

2,97651948

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yeah, I went through man 8 apt-get and found that option, but the output was different from apt.
  
  – iBug
  3 mins ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Different how? I just checked on my system and it's identical. I thought it was identical because apt is really a programmatic wrapper around apt-get and that's the reason why the warning exists.
  
  – tudor
  24 secs ago
  

  
  
  
  

add a comment | 

man apt-get shows:

 -s, --simulate, --just-print, --dry-run, --recon, --no-act
 No action; perform a simulation of events that would occur based on
 the current system state but do not actually change the system.
 Locking will be disabled (Debug::NoLocking) so the system state
 could change while apt-get is running. Simulations can also be
 executed by non-root users which might not have read access to all
 apt configuration distorting the simulation. A notice expressing
 this warning is also shown by default for non-root users
 (APT::Get::Show-User-Simulation-Note). Configuration Item:
 APT::Get::Simulate.

So if you just do:

apt-get upgrade --dry-run

it will output:

...
4 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
...

share

answered 4 mins ago

tudortudor

2,97651948

 -s, --simulate, --just-print, --dry-run, --recon, --no-act
 No action; perform a simulation of events that would occur based on
 the current system state but do not actually change the system.
 Locking will be disabled (Debug::NoLocking) so the system state
 could change while apt-get is running. Simulations can also be
 executed by non-root users which might not have read access to all
 apt configuration distorting the simulation. A notice expressing
 this warning is also shown by default for non-root users
 (APT::Get::Show-User-Simulation-Note). Configuration Item:
 APT::Get::Simulate.

...
4 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
...

share

answered 4 mins ago

tudortudor

2,97651948

answered 4 mins ago

tudortudor

2,97651948

answered 4 mins ago

tudortudor

2,97651948