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Commands tagged kernel

Terminal - Commands tagged kernel - 18 results

sudo apt-get remove $(dpkg -l|awk '/^ii linux-image-/{print $2}'|sed 's/linux-image-//'|awk -v v=`uname -r` 'v>$0'|sed 's/-generic//'|awk '{printf("linux-headers-%s\nlinux-headers-%s-generic\nlinux-image-%s-generic\n",$0,$0,$0)}')

2012-04-02 10:53:40

User: mtron

Functions: awk sed sudo

Tags: Debian Linux awk grep kernel dpkg aptitude

Up
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Remove all unused kernels with apt-get

small update for this command to work with linux kernels 3.x

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate

curl 'https://www.kernel.org/kdist/finger_banner'

2012-03-04 21:10:19

User: Testuser_01

Tags: kernel curl finger kernel.org

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Output the latest linux kernel versions from kernel.org

Gets the (previously obtainable with:

finger @kernel.org

) info of the latest linux kernel versions available.

sudo dpkg -i `ls -tr *.deb | tail -n4`

2011-10-09 14:20:11

User: _john

Functions: sudo tail

Tags: Debian Linux kernel dpkg

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Install 4 new package files

after kernel build with make deb-pkg, I like to install the 4 newest packages that exist in the directory. Beware: might be fewer for you....

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apt-get remove $(dpkg -l | awk "/^ii linux-(image|headers)/ && ! /`uname -r`/ {print \$2}")

2011-10-09 13:58:47

User: _john

Functions: apt awk

Tags: Debian Linux awk grep kernel dpkg aptitude

Up
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Remove all unused kernels with apt-get

since awk was already there one can use it instead of the 2 greps. might not be faster, but fast enough

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echo "root=/dev/sda7" > /proc/param.conf

2011-09-27 18:06:53

User: totti

Functions: echo

Tags: grub boot kernel parameter

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Adding kernel boot parameters after loading kernel and initrd

Then exit from the shell.

exit

some time need to exit twice

exit exit

Now the OS will boot with the new parameters.

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grep -2riP '\b(fuck|shit|bitch|tits|ass\b)' /usr/src/linux/

2011-07-27 23:11:02

User: h3xx

Functions: grep

Tags: kernel funny easter-egg

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Read funny developer comments in the Linux source tree

These are way better than fortune(6).

zgrep CONFIG_MAGIC_SYSRQ /proc/config.gz

2011-07-24 02:06:09

User: h3xx

Functions: zgrep

Tags: kernel proc

Up
Down

Figure out if your kernel has an option enabled

zless /proc/config.gz

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sync && echo 1 > /proc/sys/vm/drop_caches

2011-06-10 07:32:28

User: KeePon

Functions: echo sync

Tags: memory ram kernel sync cache free

Up
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clean up memory of unnecessary things (Kernerl 2.6.16 or newer)

run sync first to flush useful things out to disk!!!

To free pagecache:

echo 1 > /proc/sys/vm/drop_caches

To free dentries and inodes:

echo 2 > /proc/sys/vm/drop_caches

To free pagecache, dentries and inodes:

echo 3 > /proc/sys/vm/drop_caches

sudo aptitude remove -P $(dpkg -l|awk '/^ii linux-image-2/{print $2}'|sed 's/linux-image-//'|awk -v v=`uname -r` 'v>$0'|sed 's/-generic//'|awk '{printf("linux-headers-%s\nlinux-headers-%s-generic\nlinux-image-%s-generic\n",$0,$0,$0)}')

2011-04-25 05:19:57

User: Bonster

Functions: awk sed sudo

Tags: Debian Linux awk grep kernel dpkg aptitude

-2

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Remove all unused kernels with apt-get

Same as 7272 but that one was too dangerous

so i added -P to prompt users to continue or cancel

Note the double space: "...^ii␣␣linux-image-2..."

Like 5813, but fixes two bugs: [1]This leaves the meta-packages 'linux-headers-generic' and 'linux-image-generic' alone so that automatic upgrades work correctly in the future. [2]Kernels newer than the currently running one are left alone (this can happen if you didn't reboot after installing a new kernel).

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aptitude remove $(dpkg -l|awk '/^ii linux-image-2/{print $2}'|sed 's/linux-image-//'|awk -v v=`uname -r` 'v>$0'|sed 's/-generic//'|awk '{printf("linux-headers-%s\nlinux-headers-%s-generic\nlinux-image-%s-generic\n",$0,$0,$0)}')

2010-12-11 11:38:15

User: __

Functions: awk sed

Tags: Debian Linux awk grep kernel dpkg aptitude

Up
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Remove all unused kernels with apt-get

Note the double space: "...^ii␣␣linux-image-2..."

I'm bummed that this took 228 characters. I'd like to see a simpler version.

echo 0 > /proc/sys/kernel/randomize_va_space

2010-07-11 16:42:42

User: gunslinger_

Functions: echo

Tags: kernel

-1

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Disable ASLR

Disable randomisation address

aptitude remove ?and(~i~nlinux-(im|he) ?not(~n`uname -r`))

2010-06-11 22:57:09

User: dbbolton

Tags: Debian Linux kernel aptitude

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Remove all unused kernels with apt-get

A little aptitude magic. Note: this will remove images AND headers. If you just want to remove images: aptitude remove ?and(~i~nlinux-im ?not(~n`uname -r`))

I used this in zsh without any problems. I'm not sure how other shells will interpret some of the special characters used in the aptitude search terms. Use -s to simulate.

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aptitude purge linux-image | grep ^i | grep -v $(uname -r)

2010-06-11 22:20:42

User: lgallardo

Functions: grep uname

Tags: Debian Linux perl kernel aptitude

-4

Up
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Remove all unused kernels with apt-get

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perl -e 'chomp($k=`uname -r`); for (</boot/vm*>) {s/^.*vmlinuz-($k)?//; $l.="linux-image-$_ ";} system "aptitude remove $l";'

2010-06-10 22:16:47

User: dbbolton

Functions: perl

Tags: Debian Linux perl kernel aptitude

Up
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Remove all unused kernels with apt-get

TIMTOWTDI

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aptitude remove $(dpkg -l|egrep '^ii linux-(im|he)'|awk '{print $2}'|grep -v `uname -r`)

2010-06-10 21:23:00

User: dbbolton

Functions: awk egrep grep

Tags: Debian Linux awk grep kernel dpkg aptitude

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Remove all unused kernels with apt-get

This should do the same thing and is about 70 chars shorter.

dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/$.*$-$[^0-9]\+$/\1/")"'/d;s/^[^ ]* [^ ]* $[^ ]*$.*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge

2010-06-10 20:33:32

User: mitzip

Functions: sed sudo xargs

Tags: Debian Ubuntu sed apt-get kernel dpkg

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Remove all unused kernels with apt-get

This will remove all installed kernels on your debian based install, except the one you're currently using.

From:

http://tuxtweaks.com/2009/12/remove-old-kernels-in-ubuntu/comment-page-1/#comment-1590

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find /lib/modules/`uname -r`/ -type f -iname '*.o' -or -iname '*.ko' |grep -i -o '[a-z0-9]*[-|_]*[0-9a-z]*\.ko$' |xargs -I {} echo '# {}' >>/etc/modules.autoload.d/kernel-2.6

2010-01-13 02:12:08

User: paragao

Functions: echo find grep xargs

Tags: kernel Gentoo module

-1

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[Gentoo] Input modules, commented, in your module.autoload file

Whenever you compile a new kernel, there are always new modules. The best way to make sure you have the correct modules loaded when you boot is to add all your modules in the modules.autoload file (they will be commented) and uncomment all those modules you need.

Also a good way to keep track of the available modules in your system.

For other distros you may have to change the name of the file to /etc/modprobe.conf

lockstat -I -i 977 -s 30 -h sleep 1 > /tmp/profile.out

2009-03-13 13:17:53

User: garylittle

Functions: sleep

Tags: solaris kernel profile

Up
Down

Display kernel profile of currently executing functions in Solaris.

Lockstat will sample the kernel 977 times per second, and print out the functions that it sees executing on the CPU during the sample. The -s 10 switch tells lockstsat to not only print that function, but also show the call stack (up to 10 deep).