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tech:linux:purge_linux_images [2016/08/17 06:26] |
tech:linux:purge_linux_images [2016/08/17 06:26] (current) |
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| + | ====== Purge Old Linux Headers/Images with aptitude ====== | ||
| + | If there is limited space on /boot, this becomes a necessity. Identify what packages are installed and what is current with the following commands: | ||
| + | <code bash> | ||
| + | dpkg -l linux-image-\* | grep ^ii | ||
| + | uname -a | ||
| + | </code> | ||
| + | Sample output | ||
| + | <code> | ||
| + | ii linux-image-3.2.0-38-generic 3.2.0-38.61 Linux kernel image for version 3.2.0 on 64 bit x86 SMP | ||
| + | ii linux-image-3.2.0-39-generic 3.2.0-39.62 Linux kernel image for version 3.2.0 on 64 bit x86 SMP | ||
| + | ii linux-image-3.2.0-40-generic 3.2.0-40.64 Linux kernel image for version 3.2.0 on 64 bit x86 SMP | ||
| + | ii linux-image-3.2.0-43-generic 3.2.0-43.68 Linux kernel image for version 3.2.0 on 64 bit x86 SMP | ||
| + | ii linux-image-server 3.2.0.43.51 Linux kernel image on Server Equipment. | ||
| + | |||
| + | |||
| + | Linux ub4 3.2.0-43-generic #68-Ubuntu SMP Wed May 15 03:33:33 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux | ||
| + | </code> | ||
| + | |||
| + | Considering that 3.2.0-43 is installed we can remove 3.2.0-38,39,40. To remove 40 (run one at a time): | ||
| + | <code> | ||
| + | PACKAGE="linux-image-3.2.0-40-generic" | ||
| + | aptitude search $PACKAGE | ||
| + | aptitude remove $PACKAGE | ||
| + | aptitude -y purge $PACKAGE | ||
| + | </code> | ||
| + | |||
| + | Outputs | ||
| + | <code> | ||
| + | # aptitude search $PACKAGE | ||
| + | i A linux-image-3.2.0-40-generic - Linux kernel image for version 3.2.0 on 64 bit x86 SMP | ||
| + | p linux-image-3.2.0-40-generic:i386 - Linux kernel image for version 3.2.0 on 32 bit x86 SMP | ||
| + | p linux-image-3.2.0-40-generic-pae:i386 - Linux kernel image for version 3.2.0 on 32 bit x86 SMP | ||
| + | </code> | ||
| + | |||
| + | <code> | ||
| + | # aptitude search $PACKAGE | ||
| + | i A linux-image-3.2.0-40-generic - Linux kernel image for version 3.2.0 on 64 bit x86 SMP | ||
| + | p linux-image-3.2.0-40-generic:i386 - Linux kernel image for version 3.2.0 on 32 bit x86 SMP | ||
| + | p linux-image-3.2.0-40-generic-pae:i386 - Linux kernel image for version 3.2.0 on 32 bit x86 SMP | ||
| + | [07:49:46 AM][root@ub4]:/etc/cron.d[0]# aptitude remove $PACKAGE | ||
| + | The following packages will be REMOVED: | ||
| + | linux-image-3.2.0-40-generic | ||
| + | 0 packages upgraded, 0 newly installed, 1 to remove and 78 not upgraded. | ||
| + | Need to get 0 B of archives. After unpacking 150 MB will be freed. | ||
| + | (Reading database ... 111084 files and directories currently installed.) | ||
| + | Removing linux-image-3.2.0-40-generic ... | ||
| + | Examining /etc/kernel/postrm.d . | ||
| + | run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.2.0-40-generic /boot/vmlinuz-3.2.0-40-generic | ||
| + | update-initramfs: Deleting /boot/initrd.img-3.2.0-40-generic | ||
| + | run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.2.0-40-generic /boot/vmlinuz-3.2.0-40-generic | ||
| + | Generating grub.cfg ... | ||
| + | Found linux image: /boot/vmlinuz-3.2.0-57-generic | ||
| + | Found initrd image: /boot/initrd.img-3.2.0-57-generic | ||
| + | Found linux image: /boot/vmlinuz-3.2.0-54-generic | ||
| + | Found initrd image: /boot/initrd.img-3.2.0-54-generic | ||
| + | Found linux image: /boot/vmlinuz-3.2.0-52-generic | ||
| + | Found initrd image: /boot/initrd.img-3.2.0-52-generic | ||
| + | Found memtest86+ image: /memtest86+.bin | ||
| + | done | ||
| + | </code> | ||
| + | |||
| + | <code> | ||
| + | # aptitude -y purge $PACKAGE | ||
| + | The following packages will be REMOVED: | ||
| + | linux-image-3.2.0-40-generic{p} | ||
| + | 0 packages upgraded, 0 newly installed, 1 to remove and 78 not upgraded. | ||
| + | Need to get 0 B of archives. After unpacking 0 B will be used. | ||
| + | (Reading database ... 106946 files and directories currently installed.) | ||
| + | Removing linux-image-3.2.0-40-generic ... | ||
| + | Purging configuration files for linux-image-3.2.0-40-generic ... | ||
| + | Examining /etc/kernel/postrm.d . | ||
| + | run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.2.0-40-generic /boot/vmlinuz-3.2.0-40-generic | ||
| + | run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.2.0-40-generic /boot/vmlinuz-3.2.0-40-generic | ||
| + | </code> | ||
| + | |||
| + | Repeat for 39 and 38 as well. I usually leave a few versions behind and not remove all of them. | ||
| + | |||
| + | ===== Update to Latest Kernel ===== | ||
| + | <code bash> | ||
| + | aptitude update | ||
| + | aptitude install linux-headers-generic | ||
| + | </code> | ||
| + | |||
| + | ===== Script ===== | ||
| + | Create the list of existing images | ||
| + | <code bash> | ||
| + | dpkg -l linux-image-\* | grep ^ii | awk '{print "/tmp/pimage " $2}' > /tmp/pimage_list | ||
| + | chmod 755 /tmp/pimage_list | ||
| + | </code> | ||
| + | DELETE the last few lines before running to avoid deleting recent/current image!!! | ||
| + | |||
| + | Create file ''/tmp/pimage'' as: | ||
| + | <code bash> | ||
| + | #!/bin/bash | ||
| + | # | ||
| + | PACKAGE=$1 | ||
| + | aptitude -y remove $PACKAGE | ||
| + | aptitude -y purge $PACKAGE | ||
| + | # | ||
| + | exit | ||
| + | </code> | ||
| + | Change permissions on ''/tmp/pimage'' | ||
| + | <code bash> | ||
| + | chmod 755 /tmp/pimage | ||
| + | </code> | ||
| + | |||
| + | |||
| + | ===== References ===== | ||
| + | http://askubuntu.com/questions/258521/unable-to-install-virtualbox-on-ubuntu-12-10-kernel-headers-cannot-be-found | ||
