os：ubuntu2204 -- 删除“旧内核”脚本

os：ubuntu2204 -- 删除“旧内核”脚本

 

 

 

 

一、ubuntu删除旧内核：

 

 

　　1、查询内核信息：

[wit@on:null]$ sudo dpkg --get-selections | grep linux 

 

 

　　2、删除旧内核：

[wit@on:null]$ sudo apt purge  OLD-KERNEL

 

删除内核：“6.5.0-9”

[wit@ubuntu:null]$ sudo dpkg  --get-selections | grep linux | grep -E  "*-6.5.0-9-*"  | awk '{print $1}' | xargs -n 1 sudo apt purge -y

 

 

　　3、删除信息“deinstall”：

[wit@on:null]$ sudo dpkg --get-selections | grep linux | grep deinstall | awk '{ print $1}' | sudo dpkg -P 

 

 

　　4、更新启动项内容（更新grub）：

[wit@on:null]$ sudo update-grub

 

 

 

 

　二、删除旧内核的脚本源码

#!/usr/bin/env bash




# filename = remove_old_kernel_ubuntu




# remove_old_kernel_ubuntu_help

function remove_old_kernel_ubuntu_help()
{

     echo
        echo
        echo -e  "\n\t== remove_old_kernel_ubuntu_help: begin =="
        echo -e  '  command                        parameter1              function'
        echo -e  '  remove_old_kernel_ubuntu       null                    -- List all kernel files installed.'
        echo -e  '  remove_old_kernel_ubuntu       kernel-old-version      -- Remove the kernel files matched with "kernel-old-version" .'
        echo
        echo -e  '  == examples =='
        echo -e  '  remove_old_kernel_ubuntu                               List all kernel files installed. '
        echo -e  '  remove_old_kernel_ubuntu       6.2.0-36        Remove kernel files matched with "6.2.0-36" .'
        echo -e  '  [wit@on:tools]$  ./remove_old_kernel_ubuntu  6.2.0-36'
        echo -e  "\t== remove_old_kernel_ubuntu_help: begin ==\n"
        echo
        echo


}



# display kernel files by current using

function current_use_kernel()
{

    echo -e  "\n\t-- current_use_kernel: begin --";

        msg=$(echo "ROOT_MIMA" | sudo -S uname -srmo)
        echo -e "\t\t" ${msg}

    echo -e  "\t-- current_use_kernel: end --\n";

}




# list kernel files and return a parameter of type of array.

function list_kernel()
{

    echo -e "\n\t-- list_kernel: begin --";
    
    i=1
    for f in $(echo "ROOT_MIMA" | sudo -S dpkg  --get-selections | grep -E "^linux" | awk '{ print $1}')
    do
        echo -e "\t\tLIST_FILE_$i := " ${f}
        i=$(($i+1))
    done

    echo -e "\t-- list_kernel: over --\n";

}





# delete files of old kernels

function delete_old_kernel_files()
{


    if [ $1 ]
    then

        echo -e "\n\t-- delete_old_kernel_files: begin --";

        echo -e "\n\t\tREMOVLE_OLD_KERNEL := " $1 "\n"

        kernel_files=$(echo "ROOT_MIMA" | sudo -S dpkg  --get-selections | grep -E "^linux.*$1-?*" | awk '{ print $1}')

        i=1
        for f in ${kernel_files}
        do
            echo -e "\n\n\t\tDELETE_FILE_$i := " ${f} "\n"
            echo "ROOT_MIMA" | sudo -S apt purge -y ${f}
            i=$(($i+1))
        done

        echo -e "\t-- delete_old_kernel_files: over --\n";

    else

        echo -e "\t[ ERROR ]:\t" "\$1 is NULL, this programe is over !"
        exit 3

    fi

}




# fina_work():  remove old information of old kernel, and then clean, and then update-grub

function final_work()
{

    echo -e "\n\t-- final_work: begin --\n";
        #clean_files=$(echo "ROOT_MIMA" | sudo -S dpkg --get-selections | grep linux | grep reinstall | awk '{ print $1}')
     clean_files=$(echo "ROOT_MIMA" | sudo -S dpkg --get-selections | grep linux | grep reinstall | awk '{ print $1}')

    if [ ${clean_files} ]
    then
        for f in ${clean_files}
        do
            echo echo "ROOT_MIMA" | sudo -S dpkg -P ${f}
        done
    fi

    echo "ROOT_MIMA" | sudo -S apt autoremove -y;
    #echo "ROOT_MIMA" | sudo -S update-grub;

    echo -e "\n\t-- final_work: over --\n";
}




# run

function run()
{
    
    echo    
    echo -e "\n== remove_old_kernel_ubuntu: begin ==\n";


        # remove_old_kernel_ubuntu_help
            remove_old_kernel_ubuntu_help

        # display current kernel
            current_use_kernel

        # list all files of kernel
            list_kernel

        # delete all files of kernel
        if [ $1 ]
        then
            delete_old_kernel_files $1

            # final_work
            final_work
        fi

        # list all files of kernel
            list_kernel

        # display current kernel
            current_use_kernel

    echo -e "\n== remove_old_kernel_ubuntu: over ==\n";
    echo    

}




run $1

 

 

　三、参考内容：

 

　　1、ubuntu中删除显示为deinstall的内核 　　https://codeleading.com/article/15734293507/

 

　　2、删除多余的ubutu内核 　　https://codeleading.com/article/33442159805/