RPM package checksum extraction and RPM package checksum Extraction

RPM package checksum extraction and RPM package checksum Extraction
I. RPM package Verification

[Root @ localhost Packages] #Rpm-V package name already installed

# Options:

#-V verify the file (verify) in the specified RPM package)

[Root @ localhost Packages] #Vim/etc/httpd/conf/httpd. conf---> Modify the package configuration file

[Root @ localhost Packages] #Rpm-V httpd ---> verify the modified package again (no change, no prompt)

S.5... T. c/etc/httpd/conf/httpd. conf

The content of the eight items in the verification content is as follows:

S file size changed

Whether the M file type or File Permission (rwx) Changes

5. Whether the MD5 checksum of the file is changed (whether the file content is changed)

D device master/times code changed

L Link path changed

U file owner has been changed

The group to which the G file belongs has been changed.

T File Creation Time is changed

File Type:

C configuration file)

D. documentation)

G "ghost" file (ghost file) rarely occurs. Generally, this file is not included in the software package.

L license file)

R description file (read me)

Ii. File extraction in the RPM package

[Root @ localhost testuser] #Rpm-qf/usr/bin/ls---> Query the package to which the file belongs

Coreutils-8.22-11.el7.x86_64

[Root @ localhost testuser] #Rpm2cpio/mnt/cdrom/Packages/coreutils-8.22-11.el7.x86_64.rpm | cpio-t | grep/usr/bin/ls

#---> Query the relative path of a file

./Usr/bin/ls

28552 blocks

[Root @ localhost testuser] #Pwd ---> view the current location

/Home/testuser

[Root @ localhost testuser] #Ll---> View files in the current directory

Total 0

[Root @ localhost testuser] #Rpm2cpio/mnt/cdrom/Packages/coreutils-8.22-11.el7.x86_64.rpm | cpio-idv./usr/bin/ls

#---> Extract the required files from the package to the current directory.

./Usr/bin/ls

28552 blocks

[Root @ localhost testuser] #Ll ---> check whether the current directory is extracted successfully

Total 0

Drwxr-xr-x. 3 root 16 Mar 2 09:19Usr---> This directory appears, indicating that the file has been extracted successfully.

[Root @ localhost testuser] #Cd usr/bin/---> Enter the Directory

[Root @ localhost bin] #Ll---> Check whether the specified extracted files exist in the directory.

Total 116

-Rwxr-xr-x. 1 root 117616 Mar 2Ls---> The specified file is extracted successfully.

 

# After extracting the files to be restored, copy the files to the corresponding directory.

[Note] the file path after the cpio parameter"./Usr/bin/ls"It must be the same as the previously queried relative path"./usr/bin/ls "; otherwise, the extraction fails.

 

Cpio parameter description:

-T indicates the meaning of the List, and"-- List"Equivalent," relative path "is listed at this time"

-I: the meaning of the extraction, and"-- Extract"Equivalent

-D: the meaning of creating a directory, and "--Make-directories"Equivalent

-V redundant information output, and"-- Verbose"Equivalent