Linux 第11天: (08月17日) 練習和作業
刪除文件之後恢復文件
rm /usr/bin/tree
rpm -qf /bin/tree
rpm -ql tree
rpm -ivh /run/media/root/CentOS\ 7\ x86_64/Packages/tree-1.6.0-10.e17.x86_64.rpm
cp /run/media/root/CentOS\ 7\ x86_64/Packages/tree-1.6.0-10.e17.x86_64.rpm .
rpm2cpio tree-1.6.0-10.e17.x86_64.rpm | cpio -tv
ll /usr/share/doc/tree-1.6.0/README
echo >> /usr/share/doc/tree-1.6.0/README
rpm2cpio tree-1.6.0-10.e17.x86_64.rpm |cpio -idv ./usr/bin/tree
cp ./usr/bin/tree /bin/
rpm2cpio /mnt/Packages/rpm-4.11.3-17.e17.x86_64.rpm |cpio -tv
rpm2cpio /mnt/Packages/rpm-4.11.3-17.e17.x86_64.rpm |cpio -id ./bin/rpm
卸載之後使用光盤恢復rpm
centos 7
rpm -e rpm --nodeps
光盤引導選擇 Rescue a CentOS system
df
cd /run/install/repo 進入光盤
rpm -ivh Packages/rpm-4.11.3-17.x86_64.rpm --root=/mnt/sysp_w_picpath/
centos 6
mkdir /mnt/cdrom
mount /dev/cdrom /mnt/cdrom
rpm -ivh Packages/rpm-4.8.0-47.e16.x86_64.rpm --root=/mnt/sysp_w_picpath/
密鑰文件
ll /run/media/root/CentOS\ 7\ x86_64/RPM-GPG-KEY-CentOS-7
ll /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
rpm --import 導入密鑰
安裝雙內核
cd /media/CentOS_6.8_Final/
cp Packages/kernel-2.6.32-573.e16.x86_64.rpm Packages/kernel-firmware-2.6.32-573.e16.noarch.rpm /root
cd
ls
uname -r
rpm -ivh kernel-*
rpm -ivh kernel-* --oldpackage
rpm -ivh kernel-* --force