随着Ubuntu的更新，特别是其内核的更新，系统中就会存留很多版本的内核，要知道每个都很大，不但浪费硬盘空间，而且在启动的时候，grub的选项里会出现很多个内核，很是不好，所以就需要删除旧版本的已经不用的内核。一下的shell脚本就可以帮你轻松搞定问题，这个脚本是转载学长。#！/bin/sh #Program: # Let user uninstall unused kernels which installed as debian package form. #Author: # mtyy110 if [ "`whoami`" ！= "root" ]; then echo "Requires superuser privilege." exit 1 fi dpkg --get-selections | grep "linux-" | grep -v "deinstall" | grep "-[0-9].[0-9]{1,2}.[0-9]{1,2}-" while [ 1 ] do total=`dpkg --get-selections | grep "linux-" | grep -v "deinstall" | grep "-[0-9].[0-9]{1,2}.[0-9]{1,2}-" | wc -l` read -p "Which version would you like to uninstall？（0 to quit）" version if [ $version = "0" ]; then break fi tmp=`echo $version | grep "^[0-9].[0-9]{1,2}.[0-9]{1,2}-{0,1}[0-9]{0,2}$" | wc -l` if [ $tmp -eq 0 ]; then echo "Not an available version format,please input full version." continue fi sum=`dpkg --get-selections | grep "linux-" | grep -v "deinstall" | grep "-[0-9].[0-9]{1,2}.[0-9]{1,2}-" | grep "$version" | wc -l` if [ $sum -eq 0 ]; then echo "Not find version $version.Ignored." continue fi tmp=`uname -r | grep "$version" | wc -l` if [ $tmp -eq 1 ]; then read -p "This will uninstall the kernel current used:`uname -r`.Are you sure？（y/N）" choice if [ "$choice" ！= "y" -a "$choice" ！= "Y" ]; then continue fi fi if [ $total -le $sum ]; then read -p "This will uninstall all the kernels in the system.Are you sure？（y/N）" choice if [ "$choice" -o "y" -a "$choice" -o "Y" ]; then continue fi fi apt-get remove `dpkg --get-selections | grep "linux-" | grep -v "deinstall" | grep "-$version" | cut -f 1` read -p "Continue to uninstall other kernel？（Y/n）" choice if [ "$choice" = "n" -o "$choice" = "N" ]; then break fi dpkg --get-selections | grep "linux-" | grep -v "deinstall" | grep "-[0-9].[0-9]{1,2}.[0-9]{1,2}-" done exit 0
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