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Old 07-10-2008, 10:53 AM   #1
carlosinfl
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Question Locating Installed Kernels in Debian

I was looking into trying to find out what the proper way is to determine all / any installed kernels (old & present) on my Debian machine:

I was told by someone I can simply run the following command:

Code:
tunafish:~# dpkg --get-selections | grep "linux-image"
linux-image-2.6.22-3-686-bigmem			install
linux-image-2.6.24-1-686-bigmem			install
Is this correct? I am not sure if this is the correct way to see the total installed kernels on the system.
 
Old 07-10-2008, 11:45 AM   #2
farslayer
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I would use aptitude since it's my tool of choice..

Each line that begins with i is an installed package.
Code:
it-etch:/# aptitude search linux-image
v   linux-image                                           -                                                                 
v   linux-image-2.6                                       -                                                                 
p   linux-image-2.6-486                                   - Linux 2.6 image on x86                                          
p   linux-image-2.6-686                                   - Linux 2.6 image on PPro/Celeron/PII/PIII/P4                     
p   linux-image-2.6-686-bigmem                            - Linux 2.6 image on PPro/Celeron/PII/PIII/P4                     
p   linux-image-2.6-amd64                                 - Linux 2.6 image on AMD64                                        
p   linux-image-2.6-k7                                    - Linux 2.6 image on AMD K7 - transition package                  
p   linux-image-2.6-xen-686                               - Linux 2.6 image on i686                                         
i   linux-image-2.6.18-6-686                              - Linux 2.6.18 image on PPro/Celeron/PII/PIII/P4                  
p   linux-image-2.6.22-3-486                              - Linux 2.6.22 image on x86                                       
p   linux-image-2.6.22-3-686                              - Linux 2.6.22 image on PPro/Celeron/PII/PIII/P4                  
p   linux-image-2.6.22-3-686-bigmem                       - Linux 2.6.22 image on PPro/Celeron/PII/PIII/P4                  
p   linux-image-2.6.22-3-amd64                            - Linux 2.6.22 image on AMD64                                     
p   linux-image-2.6.22-3-k7                               - Linux 2.6.22 image on AMD K7                                    
p   linux-image-2.6.22-3-vserver-686                      - Linux 2.6.22 image on PPro/Celeron/PII/PIII/P4                  
p   linux-image-2.6.22-3-vserver-k7                       - Linux 2.6.22 image on AMD K7                                    
p   linux-image-2.6.24-1-486                              - Linux 2.6.24 image on x86                                       
i   linux-image-2.6.24-1-686                              - Linux 2.6.24 image on PPro/Celeron/PII/PIII/P4                  
p   linux-image-2.6.24-1-686-bigmem                       - Linux 2.6.24 image on PPro/Celeron/PII/PIII/P4                  
p   linux-image-2.6.24-1-amd64                            - Linux 2.6.24 image on AMD64                                     
p   linux-image-2.6.24-1-xen-686                          - Linux 2.6.24 image on i686                                      
i   linux-image-2.6.25-2-686                              - Linux 2.6.25 image on PPro/Celeron/PII/PIII/P4                  
p   linux-image-486                                       - Linux image on x86                                              
p   linux-image-686                                       - Linux image on PPro/Celeron/PII/PIII/P4                         
p   linux-image-686-bigmem                                - Linux image on PPro/Celeron/PII/PIII/P4                         
p   linux-image-amd64                                     - Linux image on AMD64                                            
p   linux-image-k7                                        - Linux image on AMD K7 - transition package                      
p   linux-image-xen-686                                   - Linux image on i686
although the solution provided to you is a much cleaner output..

Code:
it-etch:/# dpkg --get-selections | grep "linux-image"
linux-image-2.6.18-6-686			install
linux-image-2.6.24-1-686			install
linux-image-2.6.25-2-686			install
and if for some reason you don't believe either of those you can just look in the /boot directory..

Code:
er@it-etch:~$ ls /boot
boot.0800            initrd.img-2.6.18-6-686      System.map-2.6.18-6-686
coffee.bmp           initrd.img-2.6.18-6-686.bak  System.map-2.6.24-1-686
config-2.6.18-6-686  initrd.img-2.6.24-1-686      System.map-2.6.25-2-686
config-2.6.24-1-686  initrd.img-2.6.25-2-686      vmlinuz-2.6.18-6-686
config-2.6.25-2-686  initrd.img-2.6.25-2-686.bak  vmlinuz-2.6.24-1-686
debian.bmp           map                          vmlinuz-2.6.25-2-686
debianlilo.bmp       sarge.bmp
grub                 sid.bmp
 
Old 07-10-2008, 12:13 PM   #3
makuyl
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Or for short: dpkg -l|grep linux-image
 
Old 07-10-2008, 02:22 PM   #4
carlosinfl
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Quote:
Originally Posted by makuyl View Post
Or for short: dpkg -l|grep linux-image
Why are my results different with this command?

Code:
tunafish:~# dpkg -l | grep "linux-image"
ii  linux-image-2.6.22-3-686-bigmem      2.6.22-6.lenny1                  Linux 2.6.22 image on PPro/Celeron/PII/PIII/P4
ii  linux-image-2.6.24-1-686-bigmem      2.6.24-7                         Linux 2.6.24 image on PPro/Celeron/PII/PIII/P4
 
Old 07-10-2008, 03:57 PM   #5
makuyl
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Different how?
Aren't those the same kernels as in your first post?
 
Old 07-10-2008, 05:39 PM   #6
carlosinfl
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2.6.22-6 & 2.6.24-7

Where did those come from?
 
Old 07-10-2008, 07:26 PM   #7
lurko
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Those are the (current) versions of the linux-source packages for 2.6.22 and 2.6.24. I suspect a recent update to apt is why they're appearing there, I'm getting similar output when I run that command (and apt was among a bunch of updates I installed earlier today). Is the 2.6.24-1 linux-image package built from the 2.6.24-7 source package?
 
Old 07-10-2008, 08:59 PM   #8
Telemachos
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Code:
aptitude search "~nlinux-image ~i"
That searches for the phrase linux-image and restricts the results to installed pacakges.

For more minimal output,
Code:
aptitude search "~nlinux-image ~i" -F %p
The -F flag allows you to control the format of the output, and %p says "package name." So that tells Aptitude to run the same search, but only show the name of the installed packages.
 
Old 07-10-2008, 11:40 PM   #9
farslayer
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apt-cache policy linux-image-2.6.22-3-686-bigmem

The first is the package name the second is something like the build version which will change as security updates are added.. sorry I don't know the proper terminology but that's why the version number is different/higher.
Code:
debianetch:~# apt-cache policy linux-image-2.6.18-6-686
linux-image-2.6.18-6-686:
  Installed: 2.6.18.dfsg.1-18etch6
  Candidate: 2.6.18.dfsg.1-18etch6
  Version table:
 *** 2.6.18.dfsg.1-18etch6 0
        500 http://security.debian.org etch/updates/main Packages
        100 /var/lib/dpkg/status
     2.6.18.dfsg.1-18etch1 0
        500 http://ftp.uwsg.indiana.edu etch/main Packages
see how the kernel version in main is older than the installed version from the security repository ?
 
Old 07-11-2008, 07:11 AM   #10
carlosinfl
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Thanks all!
 
  


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